TL-ER6120
Gigabit Dual-WAN VPN Router
REV1.2.1
1910011310
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Продукт сертифіковано згідно с правилами системи УкрСЕПРО на відповідність вимогам
нормативних документів та вимогам, що передбачені чинними законодавчими актами України.
Safety Information
When product has power button, the power button is one of the way to shut off the product; When
there is no power button, the only way to completely shut off power is to disconnect the product or
the power adapter from the power source.
Don’t disassemble the product, or make repairs yourself. You run the risk of electric shock and
voiding the limited warranty. If you need service, please contact us.
Avoid water and wet locations.
安全諮詢及注意事項
●請使用原裝電源供應器或只能按照本產品注明的電源類型使用本產品。
●清潔本產品之前請先拔掉電源線。請勿使用液體、噴霧清潔劑或濕布進行清潔。
●注意防潮，請勿將水或其他液體潑灑到本產品上。
●插槽與開口供通風使用，以確保本產品的操作可靠並防止過熱，請勿堵塞或覆蓋開口。
●請勿將本產品置放於靠近熱源的地方。除非有正常的通風，否則不可放在密閉位置中。
●請不要私自打開機殼，不要嘗試自行維修本產品，請由授權的專業人士進行此項工作。
此為甲類資訊技術設備，于居住環境中使用時，可能會造成射頻擾動，在此種情況下，使用者會被要求
採取某些適當的對策。
This product can be used in the following countries:
AT
ES
LT
BG
FI
BY
FR
MT
SK
CA
GB
NL
TR
CZ
GR
NO
UA
DE
HU
PL
DK
IE
EE
IT
LV
SE
PT
RO
RU
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CONTENTS
Package Contents..................................................................................................................1
Chapter 1 About this Guide ...................................................................................................2
Conventions...........................................................................................................................2
Overview of this Guide...........................................................................................................2
Chapter 2 Introduction ..........................................................................................................4
Chapter 3 Configuration ........................................................................................................9
DMZ.........................................................................................................................31
Switch......................................................................................................................34
User.........................................................................................................................42
View.........................................................................................................................42
Advanced.............................................................................................................................44
NAT..........................................................................................................................44
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MAC Filtering...........................................................................................................71
License ..................................................................................................................114
Statistics.................................................................................................................115
Diagnostics ............................................................................................................117
Logs.......................................................................................................................122
Chapter 4 Application........................................................................................................124
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Network Topology...............................................................................................................125
Configurations....................................................................................................................125
Chapter 5 CLI ................................................................................................................143
Interface Mode...................................................................................................................146
ip-mac....................................................................................................................149
exit.........................................................................................................................153
Hardware Specifications ...........................................................................154
FAQ .........................................................................................................155
Glossary ..................................................................................................157
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Package Contents
The following items should be found in your package:
One TL-ER6120 Router
One Power Cord
One Console Cable
Two mounting brackets and other fittings
Installation Guide
Resource CD
Note:
Make sure that the package contains the above items. If any of the listed items is damaged or missing,
please contact with your distributor.
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Chapter 1 About this Guide
This User Guide contains information for setup and management of TL-ER6120 router. Please read
this guide carefully before operation.
1.1 Intended Readers
This Guide is intended for Network Engineer and Network Administrator.
1.2 Conventions
In this Guide the following conventions are used:
The router or TL-ER6120 mentioned in this Guide stands for TL-ER6120 SafeStream Gigabit
Dual-WAN VPN Router without any explanation.
Menu Name→Submenu Name→Tab page indicates the menu structure. Advanced→NAT
→Basic NAT means the Basic NAT page under the NAT menu option that is located under the
Advanced menu.
Bold font indicates a toolbar icon, menu or menu item.
<Font> indicate a button.
Symbols in this Guide:
Symbol
Description
Ignoring this type of note might result in a malfunction or damage to the
device.
Note:
Tips:
This format indicates important information that helps you make better use of
your device.
1.3 Overview of this Guide
Chapter 1 About This Guide Introduces the guide structure and conventions.
Chapter 2 Introduction
Chapter 3 Configurations
Chapter 4 Application
Chapter5 CLI
Introduces the features and appearance of TL-ER6120 router.
Introduces how to configure the router via Web management page.
Introduces the practical application of the router on the enterprise network.
Introduces how to log in and set up the router using CLI commands by
console port.
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Appendix A Hardware
Specifications
Lists the hardware specifications of this router.
Appendix B FAQ
Provides the possible solutions to the problems that may occur during the
installation and operation of the router.
Appendix C Glossary
Lists the glossary used in this guide.
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Chapter 2 Introduction
Thanks for choosing the SafeStream Gigabit Dual-WAN VPN Router TL-ER6120.
2.1 Overview of the Router
The SafeStream Gigabit Dual-WAN VPN Router TL-ER6120 from TP-LINK possesses excellent data
processing capability and multiple powerful functions including IPsec/PPTP/L2TP VPN, Load Balance,
Access Control, Bandwidth Control, Session Limit, IM/P2P Blocking, PPPoE Server and so on, which
consumedly meet the needs of small and medium enterprise, hotels and communities with volumes of
users demanding a efficient and easy-to-manage network with high security.
Powerful Data Processing Capability
+ Built-in MIPS64 network processor and 128MB DDRII high-speed RAM allows the stability and
reliability for operation.
Virtual Private Network (VPN)
+ Providing comprehensive IPsec VPN with DES/3DES/AES encryptions, MD5/SHA1
identifications and automatically/manually IKE Pre-Share Key exchanges.
+ Supporting PPTP/L2TP VPN Server mode to allow the staff on business or remote branch office
to access the headquarter network.
Online Behavior Management
+ Complete Functions of Access Rules can allow managers to select the network service levels to
block or allow applications of FTP downloading, Email, Web browsing and so on.
+ Deploying One-Click restricting of IM/P2P applications to save time & energy while reserving
exceptional groups for certain users.
+ Supporting URL Filtering to prevent potential hazards from visiting the malicious Web sites.
Powerful Firewall
+ Supporting One-Click IP-MAC Binding to avoid ARP spoofing and guarantee a network without
stagnation.
+ Featured Attack Defense to protect the network from a variety of flood attack and packet
anomaly attack.
+ Possessing MAC Filtering function to block the access of illegal hosts.
Flexible Traffic Control
+ Featured Bandwidth Control with flexible bandwidth management to automatically control the
bandwidth of the host in bi-direction to avoid bandwidth over occupation, as well as optimize
bandwidth usage.
+ Supporting Session Limit to avoid the complaint of a few people to force whole sessions.
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Dual-WAN Ports
+ Providing two 10/100/1000M WAN ports for users to connect two Internet lines for bandwidth
expansion.
+ Supporting multiple Load Balance modes, including Bandwidth Based Balance Routing,
Application Optimized Routing, and Policy Routing to optimize bandwidth usage.
+ Featured Link Backup to switch all the new sessions from dropped line automatically to another
for keeping an always on-line network.
Easy-to-use
+ Providing easy-to-use GUI with clear configuration steps and detailed help information for the
users to configure the router simply.
+ Helping administrators to monitor the whole network status and take actions to malfunctions
according to the recorded log information.
+ Supporting remote management to manage the router from remote places.
2.2 Features
Hardware
2 gigabit WAN ports, 2 gigabit LAN ports, 1 gigabit LAN/DMZ port and 1 Console port
Built-in high-quality power supply with non-fun system design for quietness
Possesses standard-sized, 19-inch outfit for standard rack
Supports Professional 4kV common mode lightning protection
Complies with IEEE 802.3, IEEE 802.3u, IEEE 802.3ab standards
Supports AH, ESP, IKE, PPP protocols
Supports TCP/IP, DHCP, ICMP, NAT, NAPT protocols
Supports PPPoE, SNTP, HTTP, DDNS, UPnP, NTP protocols
Basic Functions
Supports Static IP, Dynamic IP, PPPoE/Russian PPPoE, L2TP/Russian L2TP, PPTP/Russian
PPTP, Dual Access, BigPond Internet connections
Supports Virtual Server, Port Triggering, ALG, Static Route and RIP v1/v2
Built-in Switch supporting Port Mirror, Port VLAN, Rate Control and so on
Supports to change the MAC address of LAN, WAN, DMZ port
Supports Logs, Statistics, Time setting
Supports Remote and Web management
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Supports Diagnostic (Ping/Tracert) and Online Detection
VPN
Supports IPsec VPN and provides up to 100 IPsec VPN tunnels
Supports IPSec VPN in LAN-to-LAN or Client-to-LAN
Provides DES, 3DES, AES128, AES152, AES256 encryption, MD5, SHA1 authentication
Supports IKE Pre-Share Key and DH1/DH2/DH5 Key Exchanges
Supports PPTP/L2TP Server/Client
Traffic Control
Supports Bandwidth Control
Supports Session Limit
Security
Built-in firewall supporting URL/MAC Filtering
Supports Access Control
Supports Attack Defense
Supports IP-MAC Binding
Supports GARP (Gratuitous ARP)
Deploys One-Click restricting of IM/P2P applications
2.3 Appearance
2.3.1 Front Panel
The front panel of TL-ER6120 is shown as the following figure.
LEDs
LED
Status
On
Indication
The router is powered on
PWR
Off
The router is powered off or power supply is abnormal
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LED
Status
Flashing
On/Off
On
Indication
The router works properly
SYS
The router works improperly
There is a device linked to the corresponding port
There is no device linked to the corresponding port
The corresponding port is transmitting or receiving data
Link/Act
Off
Flashing
On (Green) The linked device is running at 1000Mbps
On (Yellow) The linked device is running at 100Mbps
Speed
DMZ
There is no device linked to the corresponding port or the
Off
linked device is running at 10Mbps
On
Off
The port is working in DMZ mode
The port is working in LAN mode
Interface Description
Interface
Port
Description
The WAN port is for connecting the router to a DSL/Cable
modem or Ethernet by the RJ45 cable
WAN
1~2
The LAN port is for connecting the router to the local PCs or
switches by the RJ45 cable
LAN
1~3
3
DMZ
The DMZ port is for connecting the router to the servers
The Console port is for connecting with the serial port of a
computer or terminal to monitor and configure the router
Console
N/A
Reset button
Use the button to restore the router to the factory defaults. With the router powered on, use a pin to
press and hold the Reset button (about 4~5 seconds). After the SYS LED goes out, release the Reset
button. If the SYS LED is flashing with a high frequency about two or three seconds, it means the router
is restored successfully.
2.3.2 Rear Panel
The rear panel of TL-ER6120 is shown as the following figure.
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Power Socket
Connect the female connector of the power cord to this power socket, and the male connector to the AC
power outlet. Please make sure the voltage of the power supply meets the requirement of the input
voltage (100-240V~ 50/60Hz).
Grounding Terminal
The router already comes with lightning protection mechanism. You can also ground the router through
the PE (Protecting Earth) cable of AC cord or with Ground Cable.
Note:
Please use only the power cord provided with this router. The ground cable is not provided with this
router, please self purchase them if needed.
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Chapter 3 Configuration
3.1 Network
3.1.1 Status
The Status page shows the system information, the port connection status and other information
related to this router.
Choose the menu Network→Status to load the following page.
Figure 3-1 Status
3.1.2 System Mode
The TL-ER6120 can work in three modes: NAT, Non-NAT and Classic.
If your router is hosting your local network’s connection to the Internet with a network topology as the
Figure 3-2 shown, you can set it to NAT mode.
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Figure 3-2 Network Topology - NAT Mode
If your router is connecting the two networks of different areas in a large network environment with a
the Routing rules, you can set it to Non-NAT mode.
Figure 3-3 Network Topology – Non-NAT Mode
If your router is connected in a combined network topology as the Figure 3-4 shown, you can set it to
Classic Mode.
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Figure 3-4 Network Topology – Classic Mode
Choose the menu Network→System Mode to load the following page.
Figure 3-5 System Mode
You can select a System Mode for your router according to your network need.
NAT Mode
NAT (Network Address Translation) mode allows the router to translate private IP addresses within
internal networks to public IP addresses for traffic transport over external networks, such as the
Internet. Incoming traffic is translated back for delivery within the internal network. However, the router
will drop all the packets whose source IP addresses are in different subnet of LAN port. For example: If
the LAN port of the router is set to 192.168.0.1 for IP address and 255.255.255.0 for the Subnet Mask,
then the subnet of LAN port is 192.168.0.0/24. The packet with 192.168.0.123 as its source IP address
can be transported by NAT, whereas the packet with 20.31.76.80 as its source IP address will be
dropped.
Non-NAT Mode
In this mode, the router functions as the traditional Gateway and forwards the packets via routing
protocol. The Hosts in different subnets can communicate with one another via the routing rules
whereas no NAT is employed. For example: If the DMZ port of the router is in WAN mode, the Hosts in
the subnet of DMZ port can access the servers in Internet only when the Static router rules permit.
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Note:
In Non-NAT mode, all the NAT forwarding rules will be disabled.
Classic Mode
It's the combined mode of NAT mode and Non-NAT mode. In Classic mode, the router will first
transport the packets which are compliant with NAT forwarding rules and then match the other packets
to the static routing rules. The matched packets will be transmitted based on the static routing rules
and the unmatched ones will be dropped. In this way, the router can implement NAT for the packets
without blocking the packets in the different subnet of the ports.
3.1.3 WAN
TL-ER6120 provides the following six Internet connection types: Static IP, Dynamic IP, PPPoE/Russian
PPPoE, L2TP/Russian L2TP, PPTP/Russian PPTP and BigPond. To configure the WAN, please first
select the type of Internet connection provided by your ISP (Internet Service Provider).
Tips:
It’s allowed to set the IP addresses of both the WAN ports within the same subnet. However, to
guarantee a normal communication, make sure that the WAN ports can access the same network,
such as Internet or a local area network.
Choose the menu Network→WAN to load the configuration page.
1) Static IP
If a static IP address has been provided by your ISP, please choose the Static IP connection type to
configure the parameters for WAN port manually.
Figure 3-6 WAN – Static IP
The following items are displayed on this screen:
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Static IP
Select Static IP if your ISP has assigned a static IP address for your
computer.
Connection Type:
Enter the IP address assigned by your ISP. If you are not clear,
please consult your ISP.
IP Address:
Enter the Subnet Mask assigned by your ISP.
Subnet Mask:
Default Gateway:
MTU:
Optional. Enter the Gateway assigned by your ISP.
MTU (Maximum Transmission Unit) is the maximum data unit
transmitted by the physical network. It can be set in the range of
576-1500. The default MTU is 1500. It is recommended to keep the
default value if no other MTU value is provided by your ISP.
Enter the IP address of your ISP’s Primary DNS (Domain Name
Server). If you are not clear, please consult your ISP. It’s not allowed
to access the Internet via domain name if the Primary DNS field is
blank.
Primary DNS:
Optional. If a Secondary DNS Server address is available, enter it.
Specify the bandwidth for transmitting packets on the port.
Specify the bandwidth for receiving packets on the port.
Secondary DNS:
Upstream Bandwidth:
Downstream
Bandwidth:
2) Dynamic IP
If your ISP (Internet Service Provider) assigns the IP address automatically, please choose the
Dynamic IP connection type to obtain the parameters for WAN port automatically.
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Figure 3-7 WAN – Dynamic IP
The following items are displayed on this screen:
Dynamic IP
Select Dynamic IP if your ISP assigns the IP address automatically.
Click <Obtain> to get the IP address from your ISP’s server. Click
<Release> to release the current IP address of WAN port.
Connection Type:
Optional. This field allows you to give a name for the router. It's
blank by default.
Host Name:
MTU:
MTU (Maximum Transmission Unit) is the maximum data unit
transmitted by the physical network. It can be set in the range of
576-1500. The default MTU is 1500. It is recommended to keep the
default value if no other MTU value is provided by your ISP.
The broadcast requirement may not be supported by a few ISPs.
Select this option if you can not get the IP address from your ISP
even if with a normal network connection. This option is not
required generally.
Get IP Address by
Unicast:
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Select this option to enter the DNS (Domain Name Server) address
manually.
Use the following DNS
Server:
Enter the IP address of your ISP’s Primary DNS (Domain Name
Server). If you are not clear, please consult your ISP.
Primary DNS:
Optional. If a Secondary DNS Server address is available, enter it.
Specify the bandwidth for transmitting packets on the port.
Specify the bandwidth for receiving packets on the port.
Secondary DNS:
Upstream Bandwidth:
Downstream
Bandwidth:
Dynamic IP Status
Status:
Displays the status of obtaining an IP address from your ISP.
“Disabled” indicates that the Dynamic IP connection type is not
applied.
“Connecting” indicates that the router is obtaining the IP
parameters from your ISP.
“Connected” indicates that the router has successfully obtained
the IP parameters from your ISP.
“Disconnected” indicates that the IP address has been manually
released or the request of the router gets no response from your
ISP. Please check your network connection and consult your
ISP if this problem remains.
Displays the IP address assigned by your ISP.
IP Address:
Displays the Subnet Mask assigned by your ISP.
Displays the Gateway Address assigned by your ISP.
Displays the IP address of your ISP’s Primary DNS.
Displays the IP address of your ISP’s Secondary DNS.
Subnet Mask:
Gateway Address:
Primary DNS:
Secondary DNS:
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3) PPPoE
If your ISP (Internet Service Provider) has provided the account information for the PPPoE connection,
please choose the PPPoE connection type (Used mainly for DSL Internet service).
Figure 3-8 WAN - PPPoE
The following items are displayed on this screen:
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PPPoE Settings
Select PPPoE if your ISP provides xDSL Virtual Dial-up connection.
Click <Connect> to dial-up to the Internet and obtain the IP address.
Click <Disconnect> to disconnect the Internet connection and
release the current IP address.
Connection Type:
Enter the Account Name provided by your ISP. If you are not clear,
please consult your ISP.
Account Name:
Enter the Password provided by your ISP.
Password:
You can select the proper Active mode according to your need.
Active Mode:
Manual: Select this option to manually activate or terminate the
Internet connection by the <Connect> or <Disconnect> button.
It is optimum for the dial-up connection charged on time.
Always-on: Select this option to keep the connection always
on. The connection can be re-established automatically when it
is down.
Time-based: Select this option to keep the connection on
during the Active time you set.
Check here to enable PPPoE advanced settings.
PPPoE Advanced
Settings:
Once PPPoE is connected, the router will send keep-alive packets
every "Keep Alive Interval" sec and "Keep Alive Retry Times" to
make sure the connection is still alive. If the router does not get the
response from ISP after sending keep-alive packets, then the router
will terminate the connection.
Keep Alive:
MTU (Maximum Transmission Unit) is the maximum data unit
transmitted by the physical network. It can be set in the range of
576-1492. The default MTU is 1480. It is recommended to keep the
default value if no other MTU value is provided by your ISP.
MTU:
Optional. Enter the ISP address provided by your ISP. It's null by
default.
ISP Address:
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Optional. Enter the Service Name provided by your ISP. It's null by
default.
Service Name:
Enter the IP address of your ISP’s Primary DNS.
Primary DNS:
Optional. Enter the IP address of your ISP’s Secondary DNS.
Secondary DNS:
Secondary Connection:
Here allows you to configure the secondary connection. Dynamic IP
and Static IP connection types are provided.
Select the secondary connection type. Options include Disable,
Dynamic IP and Static IP.
Connection Type:
IP Address:
If Static IP is selected, configure the IP address of WAN port. If
Dynamic IP is selected, the obtained IP address of WAN port is
displayed.
If Static IP is selected, configure the subnet address of WAN port. If
Dynamic IP is selected, the obtained subnet address of WAN port is
displayed.
Subnet Address:
Displays the status of secondary connection.
Status:
Specify the bandwidth for transmitting packets on the port.
Specify the bandwidth for receiving packets on the port.
Upstream Bandwidth:
Downstream Bandwidth:
PPPoE Status
Status:
Displays the status of PPPoE connection.
“Disabled” indicates that the PPPoE connection type is not
applied.
“Connecting” indicates that the router is obtaining the IP
parameters from your ISP.
“Connected” indicates that the router has successfully obtained
the IP parameters from your ISP.
“Disconnected” indicates that the connection has been
manually terminated or the request of the router has no
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response from your ISP. Please ensure that your settings are
correct and your network is connected well. Consult your ISP if
this problem remains.
Displays the IP address assigned by your ISP.
IP Address:
Displays the Gateway Address assigned by your ISP.
Displays the IP address of your ISP’s Primary DNS.
Displays the IP address of your ISP’s Secondary DNS.
Gateway Address:
Primary DNS:
Secondary DNS:
4) L2TP
If your ISP (Internet Service Provider) has provided the account information for the L2TP connection,
please choose the L2TP connection type.
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Figure 3-9 WAN - L2TP
The following items are displayed on this screen:
L2TP Settings
Select L2TP if your ISP provides a L2TP connection. Click <Connect>
to dial-up to the Internet and obtain the IP address. Click
<Disconnect> to disconnect the Internet connection and release the
current IP address.
Connection Type:
Enter the Account Name provided by your ISP. If you are not clear,
please consult your ISP.
Account Name:
Password:
Enter the Password provided by your ISP.
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Enter the Server IP provided by your ISP.
Server IP:
MTU:
MTU (Maximum Transmission Unit) is the maximum data unit
transmitted by the physical network. It can be set in the range of
576-1460. The default MTU is 1460. It is recommended to keep the
default value if no other MTU value is provided by your ISP.
You can select the proper Active Mode according to your need.
Active Mode:
Manual: Select this option to manually activate or terminate the
Internet connection by the <Connect> or <Disconnect> button. It
is optimum for the dial-up connection charged on time.
Always-on: Select this option to keep the connection always on.
The connection can be re-established automatically when it is
down.
Here allows you to configure the secondary connection. Dynamic IP
and Static IP connection types are provided.
Secondary
Connection:
Select the secondary connection type. Options include Disable,
Dynamic IP and Static IP.
Connection Type:
IP Address:
If Static IP is selected, configure the IP address of WAN port. If
Dynamic IP is selected, the IP address of WAN port obtained is
displayed.
If Static IP is selected, configure the subnet mask of WAN port. If
Dynamic IP is select, the subnet mask of WAN port obtained is
displayed.
Subnet Mask:
If Static IP is selected, configure the default gateway. If Dynamic IP is
selected, the obtained default gateway is displayed.
Default Gateway:
If Static IP is selected, configure the DNS. If Dynamic IP is selected,
the obtained DNS is displayed.
Primary DNS/
Secondary DNS:
Specify the bandwidth for transmitting packets on the port.
Upstream
Bandwidth:
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Specify the bandwidth for receiving packets on the port.
Downstream
Bandwidth:
L2TP Status
Status:
Displays the status of PPPoE connection.
“Disabled” indicates that the L2TP connection type is not applied.
“Connecting” indicates that the router is obtaining the IP
parameters from your ISP.
“Connected” indicates that the router has successfully obtained
the IP parameters from your ISP.
“Disconnected” indicates that the connection has been manually
terminated or the request of the router has no response from
your ISP. Please ensure that your settings are correct and your
network is connected well. Consult your ISP if this problem
remains.
Displays the IP address assigned by your ISP.
IP Address:
Displays the IP address of your ISP’s Primary DNS.
Displays the IP address of your ISP’s Secondary DNS.
Primary DNS:
Secondary DNS:
5) PPTP
If your ISP (Internet Service Provider) has provided the account information for the PPTP connection,
please choose the PPTP connection type.
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Figure 3-10 WAN - PPTP
The following items are displayed on this screen:
PPTP Settings
Select PPTP if your ISP provides a PPTP connection. Click
<Connect> to dial-up to the Internet and obtain the IP address. Click
<Disconnect> to disconnect the Internet connection and release the
current IP address.
Connection Type:
Enter the Account Name provided by your ISP. If you are not clear,
please consult your ISP.
Account Name:
Password:
Enter the Password provided by your ISP.
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Enter the Server IP provided by your ISP.
Server IP:
MTU:
MTU (Maximum Transmission Unit) is the maximum data unit
transmitted by the physical network. It can be set in the range of
576-1460. The default MTU is 1460. It is recommended to keep the
default value if no other MTU value is provided by your ISP.
You can select the proper Active mode according to your need.
Active Mode:
Manual: Select this option to manually activate or terminate the
Internet connection by the <Connect> or <Disconnect> button.
It’s optimum for the dial-up connection charged on time.
Always-on: Select this option to keep the connection always on.
The connection can be re-established automatically when it is
down.
Here allows you to configure the secondary connection. Dynamic IP
and Static IP connection types are provided.
Secondary
Connection:
Select the secondary connection type. Options include Disable,
Dynamic IP and Static IP.
Connection Type:
IP Address:
If Static IP is selected, configure the IP address of WAN port. If
Dynamic IP is selected, the IP address of WAN port obtained is
displayed.
If Static IP is selected, configure the subnet mask of WAN port. If
Dynamic IP is select, the subnet mask of WAN port obtained is
displayed.
Subnet Mask:
If Static IP is selected, configure the default gateway. If Dynamic IP is
selected, the obtained default gateway is displayed.
Default Gateway:
If Static IP is selected, configure the DNS. If Dynamic IP is selected,
the obtained DNS is displayed.
Primary DNS/
Secondary DNS:
Specify the bandwidth for transmitting packets on the port.
Specify the bandwidth for receiving packets on the port.
Upstream Bandwidth:
Downstream
Bandwidth:
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PPTP Status
Status:
Displays the status of PPTP connection.
“Disabled” indicates that the PPTP connection type is not
applied.
“Connecting” indicates that the router is obtaining the IP
parameters from your ISP.
“Connected” indicates that the router has successfully obtained
the IP parameters from your ISP.
“Disconnected” indicates that the connection has been manually
terminated or the request of the router has no response from
your ISP. Please ensure that your settings are correct and your
network is connected well. Consult your ISP if this problem
remains.
Displays the IP address assigned by your ISP.
IP Address:
Displays the IP address of your ISP’s Primary DNS.
Displays the IP address of your ISP’s Secondary DNS.
Primary DNS:
Secondary DNS:
6) BigPond
If your ISP (Internet Service Provider) has provided the account information for the BigPond
connection, please choose the BigPond connection type.
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Figure 3-11 WAN – Bigpond
The following items are displayed on this screen:
BigPond Settings
Connection Type:
Select BigPond if your ISP provides a BigPond connection. Click
<Connect> to dial-up to the Internet and obtain the IP address. Click
<Disconnect> to disconnect the Internet connection and release the
current IP address.
Enter the Account Name provided by your ISP. If you are not clear,
please consult your ISP.
Account Name:
Password:
Enter the Password provided by your ISP. If you are not clear, please
consult your ISP.
Enter the address of authentication server. It can be IP address or
server name.
Auth Server:
Auth Domain:
Enter the domain name of authentication server. It's only required
when the address of Auth Server is a server name.
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You can select the proper Active mode according to your need.
Auth Mode:
Manual: Select this option to manually activate or terminate the
Internet connection by the <Connect> or <Disconnect> button.
It’s optimum for the dial-up connection charged on time.
Always-on: Select this option to keep the connection always on.
The connection can be re-established automatically when it is
down.
MTU (Maximum Transmission Unit) is the maximum data unit
transmitted by the physical network. It can be set in the range of
576-1500. The default MTU is 1500.
MTU:
Specify the Upstream/Downstream Bandwidth for the port. To make
"Load Balance" and "Bandwidth Control" take effect, please set
these parameters correctly.
Upstream/Downstream
Bandwidth:
BigPond Status
Status:
Displays the status of BigPond connection.
“Disabled” indicates that the BigPond connection type is not
applied.
“Connecting” indicates that the router is obtaining the IP
parameters from your ISP.
“Connected” indicates that the router has successfully
obtained the IP parameters from your ISP.
“Disconnected” indicates that the connection has been
manually terminated or the request of the router has no
response from your ISP. Please ensure that your settings are
correct and your network is connected well. Consult your ISP if
this problem remains.
Displays the IP address assigned by your ISP.
Displays the Subnet Mask assigned by your ISP.
IP Address:
Subnet Mask:
Default Gateway:
Displays the IP address of the default gateway assigned by your
ISP.
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Note:
To ensure the BigPond connection re-established normally, please restart the connection at least 5
seconds after the connection is off.
3.1.4 LAN
3.1.4.1
LAN
On this page, you can configure the parameters for LAN port of this router.
Choose the menu Network→LAN→LAN to load the following page.
Figure 3-12 LAN
The following items are displayed on this screen:
LAN
Enter the LAN IP address of the router. 192.168.0.1 is the default IP
address. The Hosts in LAN can access the router via this IP address.
It can be changed according to your network.
IP Address:
Enter the Subnet Mask. The default subnet mask is 255.255.255.0.
Subnet Mask:
Note:
If the LAN IP address is changed, you must use the new IP address to log into the router. To guarantee
a normal communication, be sure to set the Gateway address and the Subnet Mask of the Hosts on
the LAN to the new LAN IP address and the Subnet Mask of the router.
3.1.4.2
DHCP
The router with its DHCP (Dynamic Host Configuration Protocol) server enabled can automatically
assign an IP address to the computers in the local area network.
Choose the menu Network→LAN→DHCP to load the following page.
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Figure 3-13 DHCP Settings
The following items are displayed on this screen:
DHCP Settings
DHCP Server:
Enable or disable the DHCP server on your router. To enable the
router to assign the TCP/IP parameters to the computers in the LAN
automatically, please select Enable.
Enter the Start IP address to define a range for the DHCP server to
assign dynamic IP addresses. This address should be in the same IP
address subnet with the router’s LAN IP address. The default address
is 192.168.0.2.
Start IP Address:
End IP Address:
Lease Time:
Enter the End IP address to define a range for the DHCP server to
assign dynamic IP addresses. This address should be in the same IP
address subnet with the router’s LAN IP address. The default address
is 192.168.0.254.
Specify the length of time the DHCP server will reserve the IP address
for each computer. After the IP address expired, the client will be
automatically assigned a new one.
Optional. Enter the Gateway address to be assigned. It is
recommended to enter the IP address of the LAN port of the router.
Default Gateway:
Default Domain:
Optional. Enter the domain name of your network.
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Optional. Enter the Primary DNS server address provided by your
ISP. It is recommended to enter the IP address of the LAN port of the
router.
Primary DNS:
Optional. If a Secondary DNS Server address is available, enter it.
Secondary DNS:
3.1.4.3
DHCP Client
On this page, you can view the information about all the DHCP clients connected to the router.
Choose the menu Network→LAN→DHCP Client to load the following page.
Figure 3-14 DHCP Client
You can view the information of the DHCP clients in this table. Click the Refresh button for the updated
information.
3.1.4.4
DHCP Reservation
DHCP Reservation feature allows you to reserve an IP address for the specified MAC address. The
client with this MAC address will always get the same IP address every time when it accesses the
DHCP server.
Choose the menu Network→LAN→DHCP Reservation to load the following page.
Figure 3-15 DHCP Reservation
The following items are displayed on this screen:
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DHCP Reservation
MAC Address:
Enter the MAC address of the computer for which you want to reserve
the IP address.
Enter the reserved IP address.
IP Address:
Description:
Optional. Enter a description for the entry. Up to 28 characters can be
entered.
Activate or Inactivate the corresponding entry.
Status:
List of Reserved Address
In this table, you can view the information of the entries and edit them by the Action buttons.
computer with the MAC address 00-19-66-83-53-CF, and this entry is activated.
Note:
then import the entries from the IP-MAC binding table to the List of Reserved Address in buck by
clicking <Import> button in Figure 3-15 DHCP Reservation.
3.1.5 DMZ
DMZ (Demilitarized Zone) is a network which has fewer default firewall restrictions than the LAN does.
TL-ER6120 provides a DMZ port to allow all the local hosts connected to this port to be exposed to the
Internet for some special-purpose services, such as such as Internet gaming and video-conferencing.
The DMZ physical port can work in Public mode and Private mode.
In Public mode, the DMZ port allows the Hosts in DMZ to directly communicate with Internet via routing
mode using public IP address. However, the Hosts in DMZ cannot access LAN.
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Figure 3-16 DMZ – Public Mode
In Private mode, the DMZ port allows the Hosts in DMZ to access Internet via NAT mode which
translates private IP addresses within DMZ to public IP addresses for transport over Internet. The
Hosts in DMZ can directly communicate with LAN using the private IP addresses within the different
subnet of LAN.
Figure 3-17 DMZ – Private Mode
3.1.5.1
DMZ
This page allows you to configure the DMZ port of TL-ER6120.
Choose the menu Network→DMZ→DMZ to load the following page.
Figure 3-18 DMZ
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The following items are displayed on this screen:
DMZ
Activate or inactivate this entry. The DMZ port functions as a normal
LAN port when it’s disabled.
Status:
Select the mode for DMZ port to control the connection way among
DMZ, LAN and Internet. Options include: Public and Private.
Mode:
Enter the IP address of DMZ port.
Enter the Subnet Mask of DMZ port.
IP Address:
Subnet Mask:
Tips:
The DHCP service, DHCP Client and DHCP Reservation functions are available when the DMZ port is
Note:
When the DMZ port is enabled in Public Mode, please do not enable the DHCP service of DMZ port if
your ISP provides a single public IP address. Otherwise, the Hosts in DMZ will be unable to access
Internet normally. If an IP address range is provided by your ISP, please configure the DHCP pool
based on the IP address range.
3.1.6 MAC Address
The MAC (Media Access Control) address, as the unique identifier of the router in network, does not
need to be changed commonly.
Set the MAC Address for LAN port:
In a complex network topology with all the ARP bound devices, if you want to use TL-ER6120 instead
of the current router in a network node, you can just set the MAC address of TL-ER6120‘s LAN port
the same to the MAC address of the previous router, which can avoid all the devices under this
network node to update their ARP binding tables.
Set the MAC Address for WAN port:
In the condition that your ISP has bound the account and the MAC address of the dial-up device, if you
want to change the dial-up device to be TL-ER6120, you can just set the MAC address of
TL-ER6120’s WAN port the same to the MAC address of the previous dial-up device for a normal
Internet connection.
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Set the MAC Address for DMZ port:
The application of MAC address for DMZ port is similar to that for LAN port.
Choose the menu Network→MAC Address→MAC Address to load the following page.
Figure 3-19 MAC Address
The following items are displayed on this screen:
MAC Address
Port:
Displays the port type of the router.
Displays the current MAC address of the port.
Current MAC Address:
MAC Clone:
It’s only available for WAN port. Click the <Restore Factory MAC>
button to restore the MAC address to the factory default value or
click the <Clone Current PC’s MAC> button to clone the MAC
address of the PC you are currently using to configure the router.
Then click <Save> to apply.
Note:
To avoid a conflict of MAC address on the local area network, it’s not allowed to set the MAC address
of the router’s LAN port to the MAC address of the current management PC.
3.1.7 Switch
Some basic switch port management functions are provided by TL-ER6120, which facilitates you to
monitor the traffic and manage the network effectively.
3.1.7.1
Statistics
Statistics screen displays the detailed traffic information of each port, which allows you to monitor the
traffic and locate faults promptly.
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Choose the menu Network→Switch→Statistics to load the following page.
Figure 3-20 Statistics
The following items are displayed on this screen:
Statistics
Unicast:
Displays the number of normal unicast packets received or transmitted
on the port.
Displays the number of normal broadcast packets received or
transmitted on the port.
Broadcast:
Pause:
Displays the number of flow control frames received or transmitted on
the port.
Displays the number of normal multicast packets received or transmitted
on the port.
Multicast:
Undersize:
Displays the number of the received frames (including error frames) that
are less than 64 bytes long.
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Displays the number of the received packets (including error frames) that
are between 64 bytes and the maximum frame length. The maximum
untagged frame this router can support is 1518 bytes long and the
maximum tagged frame is 1522 bytes long.
Normal:
Displays the number of the received packets (including error frames) that
are longer than the maximum frame.
Oversize:
Displays the total number of the received or transmitted packets
(including error frames).
Total (Bytes):
Click the <Clear All> button to clear all the traffic statistics.
Tips:
The Port 1/2/3/4/5 mentioned in this User Guide refers to the WAN1/2 port and LAN1/2/3 port on the
router.
3.1.7.2
Port Mirror
Port Mirror, the packets obtaining technology, functions to forward copies of packets from one/multiple
ports (mirrored port) to a specific port (mirroring port). Usually, the mirroring port is connected to a data
diagnose device, which is used to analyze the mirrored packets for monitoring and troubleshooting the
network.
Choose the menu Network→Switch→Port Mirror to load the following page.
Figure 3-21 Port Mirror
The following items are displayed on this screen:
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General
Check the box to enable the Port Mirror function. If unchecked, it will be
disabled.
Enable Port Mirror:
Select the mode for the port mirror function. Options include:
Mode:
Ingress: When this mode is selected, only the incoming packets sent
by the mirrored port will be copied to the mirroring port.
Egress: When this mode is selected, only the outgoing packets sent
by the mirrored port will be copied to the mirroring port.
Ingress&Egress: When this mode is selected, both the incoming and
outgoing packets through the mirrored port will be copied to the
mirroring port.
Port Mirror
Select the Mirroring Port to which the traffic is copied. Only one port can
be selected as the mirroring port.
Mirroring Port:
Select the Mirrored Port from which the traffic is mirrored. One or multiple
ports can be selected as the mirrored ports.
Mirrored Port:
(mirrored ports) will be copied to port 4 (mirroring port).
Tips:
If both the mirrored port and the mirroring port are the LAN ports, these two LAN ports should be in the
same Port VLAN. For example, if port 3 (the mirroring port) and port 4 (the mirrored port) are the LAN
ports, the Port Mirror function can take effect only when port 3 and port 4 are in the same Port VLAN.
Application Example:
To monitor all the traffic and analyze the network abnormity for an enterprise’s network, please set the
Port Mirror function as below:
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1)
Check the box before Enable Port Mirror to enable the Port Mirror function and select the
Ingress & Egress mode.
2)
3)
4)
Select Port 3 to be the Mirroring Port to monitor all the packets of the other ports.
Select all the other ports to be the Mirrored Ports.
Click the <Save> button to apply.
3.1.7.3
Rate Control
On this page, you can control the traffic rate for the specific packets on each port so as to manage your
network flow.
Choose the menu Network→Switch→Rate Control to load the following page.
Figure 3-22 Rate Control
The following items are displayed on this screen:
Rate Control
Port:
Displays the port number.
Specify whether to enable the Ingress Limit feature.
Ingress Limit:
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Select the Ingress Mode for each port. Options include:
Ingress Mode:
All Frames: Select this option to limit all the frames.
Broadcast & Multicast: Select this option to limit broadcast frame and
multicast frame.
Broadcast: Select this option to limit the broadcast frame.
Specify the limit rate for the ingress packets.
Specify whether to enable Egress Limit feature.
Specify the limit rate for the egress packets.
Ingress Rate:
Egress Limit:
Egress Rate:
Ingress mode is Flood while the Ingress and Egress Rates are 1Mbps. That is, the receiving rate for
the ingress packets of Flood mode will not exceed 1Mbps, and the transmitting rate for all the egress
packets will not exceed 1Mbps.
3.1.7.4
Port Config
On this page, you can configure the basic parameters for the ports.
Choose the menu Network→Switch→Port Config to load the following page.
Figure 3-23 Port Config
The following items are displayed on this screen:
Port Config
Status:
Specify whether to enable the port. The packets can be transported via
this port after being enabled.
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Allows you to enable/disable the Flow Control function.
Select the Negotiation Mode for the port.
Flow Control:
Negotiation Mode:
All Ports:
Allows you to configure the parameters for all the ports at one time.
3.1.7.5
Port Status
On this page, you can view the current status of each port.
Choose the menu Network→Switch→Port Status to load the following page.
Figure 3-24 Port Status
3.1.7.6
Port VLAN
A VLAN (Virtual Local Area Network) is a network topology configured according to a logical scheme
rather than the physical layout, which allows you to divide the physical LAN into multiple logical LANs
so as to control the communication among the ports.
The VLAN function can prevent the broadcast storm in LANs and enhance the network security. By
creating VLANs in a physical LAN, you can divide the LAN into multiple logical LANs, each of which
has a broadcast domain of its own. Hosts in the same VLAN communicate with one another as if they
are in a LAN. However, hosts in different VLANs cannot communicate with one another directly.
Therefore, broadcast packets are limited in a VLAN.
TL-ER6120 provides the Port VLAN function, which allows you to create multiple logical VLANs for the
LAN ports based on their port numbers.
Choose the menu Network→Switch→Port VLAN to load the following page.
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Figure 3-25 Port VLAN
The following items are displayed on this screen:
Port VLAN
Network:
VLAN:
Displays the current logical network of the physical port.
Select the desired VLAN for the port.
Tips:
●
●
The Port VLAN can only be created among the LAN ports.
The change of DMZ status will affect the configurations of Port VLAN. You're recommended to
check or reconfigure the Port VLAN if the status of DMZ is changed.
3.2 User Group
The User Group function is used to group different users for unified management, so that you can
perform other applications such as Bandwidth Control, Session Limit, and Access Control etc. on per
group.
3.2.1 Group
On this page you can define the group for management.
Choose the menu User Group→Group to load the following page.
Figure 3-26 Group Configuration
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The following items are displayed on this screen:
Group Config
Group Name:
Description:
List of Group
Specify a unique name for the group.
Give a description for the group. It's optional.
In this table, you can view the information of the Groups and edit them by the Action buttons.
3.2.2 User
On this page, you can configure the User for the group.
Choose the menu User Group→User to load the following page.
Figure 3-27 User Configuration
The following items are displayed on this screen:
User Config
Specify a unique name for the user.
User Name:
Enter the IP Address of the user. It cannot be the network address or
broadcast address of the port.
IP Address:
Give a description to the user for identification. It's optional.
Description:
List of User
In this table, you can view the information of the Users and edit them by the Action buttons.
3.2.3 View
On this page, you can configure the User View or Group View.
Choose the menu User Group→View to load the following page.
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Figure 3-28 View Configuration
The following items are displayed on this screen:
View Config
Select the desired view for configuration.
Select the name of the desired User.
View:
User Name:
Displays the Groups that the User can join.
Displays the Groups to which this User belongs.
Select the name of the desired Group.
Available Group:
Selected Group:
Group Name:
Click this button to view the tree structure of this group. All the members of
this group will be displayed, including Users and sub-Groups. The Group
Names are displayed in bold.
Group Structure:
Displays the Users and the Groups which can be added into this group.
Displays the members of this group, including Users and Groups.
Available Member:
Selected Member:
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3.3 Advanced
3.3.1 NAT
NAT (Network Address Translation) is the translation between private IP and public IP, which allows
private network users to visit the public network using private IP addresses.
With the explosion of the Internet, the number of available IP addresses is not enough. NAT provides a
way to allow multiple private hosts to access the public network with one public IP at the same time,
which alleviates the shortage of IP addresses. Furthermore, NAT strengthens the LAN (Local Area
Network) security of the network since the address of LAN host never appears on the Internet.
3.3.1.1
NAT Setup
On this page, you can set up the NAT function.
Choose the menu Advanced→NAT→NAT Setup to load the following page.
Figure 3-29 NAT Setup
The following items are displayed on this screen:
NAPT
Enter the source port range between 2049 and 65000, the span of which
must be not less than 100.
Source Port Range:
NAT-DMZ
NAT-DMZ:
Enable or disable NAT-DMZ. NAT DMZ is a special service of NAT
application, which can be considered as a default forwarding rule. When
NAT DMZ (Pseudo DMZ) is enabled, all the data initiated by external
network falling short of the current connections or forwarding rules will be
forwarded to the preset NAT DMZ host.
Enter the IP address of the host specified as NAT DMZ server.
Host IP Address:
3.3.1.2
One-to-One NAT
On this page, you can configure the One-to-One NAT.
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Choose the menu Advanced→NAT→One-to-One NAT to load the following page.
Figure 3-30 One to One NAT
The following items are displayed on this screen:
One-to-One NAT
Enter the Original IP Address in the first checkbox and Translated
Mapping IP Address:
IP Address in the second checkbox. TL-ER6120 allows mapping from LAN
port to WAN port and DMZ in LAN Mode.
Select an interface for forwarding data packets.
Interface:
Enable or disable DMZ Forwarding. The packets transmitted to the
Translated IP Address will be forwarded to the host of Original IP if DMZ
Forwarding is enabled.
DMZ Forwarding:
Give a description for the entry.
Activate or inactivate the entry.
Description:
Status:
List of Rules
In this table, you can view the information of the entries and edit them by the Action buttons.
and the WAN IP address after NAT mapping is specified to be 222.135.48.128. The data packets
are transmitted from WAN1 port. DMZ Forwarding and this entry are both activated.
Note:
One-to-One NAT entries take effect only when the Connection Type of WAN is Static IP. Changing the
Connection type from Static IP to other ones will make the entries attached to the interface disabled.
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3.3.1.3
Multi-Nets NAT
Multi-Nets NAT function allows the IP under LAN or DMZ port within multiple subnets to access the
Internet via NAT.
Choose the menu Advanced→NAT→Multi-Nets NAT to load the following page.
Figure 3-31 Multi-Nets NAT
The following items are displayed on this screen:
Multi-Nets NAT
Subnet/Mask:
Enter the subnet/mask to make the address range for the entry.
Select the interface for the entry. You can select LAN or DMZ port.
Give a description for the entry.
Interface:
Description:
Status:
Activate or inactivate the entry.
list of Rules
You can view the information of the entries and edit them by the Action buttons.
subnet under the LAN port of the router is 192.168.2.0/24 and this entry is activated. After the
corresponding Static Route entry is set, the hosts within this subnet can access the Internet
through the router via NAT.
Note:
●
Multi-Nets NAT entry takes effect only when cooperating with the corresponding Static Route
entries.
●
●
The DMZ port will display in the drop-down list only when the DMZ port is enabled.
For detailed setting of subnet mask, please refer to the Appendix BFAQ
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Application Example:
Network Requirements
The LAN subnet of TL-ER6120 is 192.168.0.0 /24, the subnet of VLAN2 under a three layer switch is
192.168.2.0 /24, while the subnet of VLAN3 is 192.168.3.0 /24. The IP of VLAN for cascading the
switch to the router is 192.168.0.2. Now the hosts within VLAN2 and VLAN3 desire to access the
Internet.
The network topology is shown as the following:
Configuration procedure
1. Establish the Multi-Nets NAT entries with Subnet/Mask of VLAN2 and VLAN3.
The configured entries are as follows:
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2. Then set the corresponding Static Route entry, enter the IP address of the interface connecting
the router and the three layer switch into the Next Hop field.
Choose the menu Advanced→Routing→Static Route to load the following page.
The Static Route entry is as follows:
3.3.1.4
Virtual Server
Virtual server sets up public services in your private network, such as DNS, Email and FTP, and
defines a service port. All the service requests to this port will be transmitted to the LAN server
appointed by the router via IP address.
Choose the menu Advanced→NAT→Virtual Server to load the following page.
Figure 3-32 Virtual Server
The following items are displayed on this screen:
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Virtual Server
Name:
Enter a name for Virtual Server entries. Up to 28 characters can be
entered.
Enter the service port or port range the router provided for accessing
external network. All the requests from Internet to this service port or
port range will be redirected to the specified server in local network.
External Port:
Specify the service port of the LAN host as virtual server.
Specify the protocol used for the entry.
Internal Port:
Protocol:
Enter the IP address of the specified internal server for the entry. All
the requests from the Internet to the specified LAN port will be
redirected to this host.
Internal Server IP:
Activate or inactivate the entry.
Status:
Note:
●
●
The External port and Internal Port should be set in the range of 1-65535.
The external ports of different entries should be different, whereas the internal ports can be the
same.
List of Rules
In this table, you can view the information of the entries and edit them by the Action buttons.
data packets from Internet to port 65534-65535 of the router will be redirected to the port
65534-65535 of the LAN host with IP address of 192.168.0.103, and this entry is activated.
3.3.1.5
Port Triggering
Some applications require multiple connections, such as Internet games, video conferencing, Internet
calling, P2P download and so on. Port Triggering is used for those applications requiring multiple
connections.
When an application initiates a connection to the trigger port, all the ports corresponding to the
incoming port will open for follow-up connections.
Choose the menu Advanced→NAT→Port Triggering to load the following page.
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Figure 3-33 Port Triggering
The following items are displayed on this screen:
Port Triggering
Name:
Enter a name for Port Triggering entries. Up to 28 characters can be
entered.
Enter the trigger port number or the range of port. Only when the
trigger port initiates connection will all the corresponding incoming
ports open and provide service for the applications, otherwise the
incoming ports will not open.
Trigger Port:
Select the protocol used for trigger port.
Trigger Protocol:
Incoming Port:
Enter the incoming port number or range of port numbers. The
incoming port will open for follow-up connection after the trigger port
initiates connection.
Select the protocol used for incoming port.
Activate or inactivate the entry.
Incoming Protocol:
Status:
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Note:
●
●
●
The Trigger Port and Incoming Port should be set in the range of 1-65535. The Incoming Port can
be set in a continuous range such as 8690-8696.
The router supports up to 16 Port Triggering entries. Each entry supports at most 5 groups of
trigger ports and overlapping between the ports is not allowed.
Each entry supports at most 5 groups of incoming ports and the sum of incoming ports you set for
each entry should not be more than 100.
List of Rules
In this table, you can view the information of the entries and edit them by the Action buttons.
The first entry in Figure 3-33 indicates that: This is a Port Triggering entry named host1, When the
LAN host initiates a TCP request via port of 5354, the incoming port 5355 will open for TCP and
UDP protocol. This entry is activated.
3.3.1.6
ALG
Some special protocols such as FTP, H.323, SIP, IPsec and PPTP will work properly only when ALG
(Application Layer Gateway) service is enabled.
Choose the menu Advanced→NAT→ALG to load the following page.
Figure 3-34 ALG
The following items are displayed on this screen:
ALG
Enable or disable FTP ALG. The default setting is enabled. It is
recommended to keep the default setting if no special requirement.
FTP ALG:
Enable or disable H.323 ALG. The default setting is enabled. H.323 is
used for various applications such as NetMeeting and VoIP.
H.323 ALG:
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Enable or disable SIP ALG. The default setting is enabled. It is
recommended to keep the default setting if no special requirement.
SIP ALG:
IPsec ALG:
Enable or disable IPsec ALG. The default setting is enabled. It is
recommended to keep default if no special requirement.
Enable or disable PPTP ALG. The default setting is enabled. It is
recommended to keep default if no special requirement.
PPTP ALG:
3.3.2 Traffic Control
Traffic Control functions to control the bandwidth by configuring rules for limiting various data flows. In
this way, the network bandwidth can be reasonably distributed and utilized.
3.3.2.1
Setup
Choose the menu Advanced→Traffic Control→Setup to load the following page.
Figure 3-35 Configuration
The following items are displayed on this screen:
General
Select this option to disable Bandwidth Control.
Disable Bandwidth
Control:
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Select this option to enable Bandwidth Control all the time.
Enable Bandwidth
Control all the time:
With this option selected, the Bandwidth Control will take effect when the
bandwidth usage reaches the specified value.
Enable Bandwidth
Control When:
Default Limit
Default Limit applies only for users that are not constrained by Bandwidth
Control Rules. These users share certain bandwidth with upper limit
configured here. Value 0 means all the remained bandwidth is available to
use.
Limited
Bandwidth:
Interface Bandwidth
Interface:
Displays the current enabled WAN port(s). The Total bandwidth is equal to
the sum of bandwidth of the enabled WAN ports.
Displays the bandwidth of each WAN port for transmitting data. The
Upstream
Bandwidth:
Upstream Bandwidth of WAN port can be configured on WAN page.
Displays the bandwidth of each WAN port for receiving data. The
Downstream
Bandwidth:
Downstream Bandwidth of WAN port can be configured on WAN page.
Note:
●
●
The Upstream/Downstream Bandwidth of WAN port you set must not be more than the bandwidth
provided by ISP. Otherwise the Traffic Control will be invalid.
If there are data flowing into the router from interface A and out from interface B while the
downstream bandwidth of A is different from the upstream bandwidth of B, then the smaller one
should be considered as the effective bandwidth, and vice versa.
●
Click the <View IP Traffic Statistics> button to jump to IP Traffic Statistics page.
3.3.2.2
Bandwidth Control
On this page, you can configure the Bandwidth Control function.
Choose the menu Advanced→Traffic Control→Bandwidth Control to load the following page.
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Figure 3-36 Bandwidth Control
The following items are displayed on this screen:
Bandwidth Control Rule
Direction:
Select the data stream direction for the entry. The direction of
arrowhead indicates the data stream direction The DMZ port
displays in the drop-down list only when the DMZ port is
enabled. WAN-ALL means all WAN ports through which the data
flow might pass. Individual WAN port cannot be selected if
WAN-ALL rules are added.
Select the group to define the controlled users.
Group:
Mode:
Individual: The bandwidth of each user equals to the current
bandwidth of this entry.
Shared: The total bandwidth of all controlled IP addresses
equals to the current bandwidth of this entry.
Specify the Guaranteed Upstream Bandwidth for this entry.
Specify the Limited Upstream Bandwidth for this entry.
Specify the Guaranteed Downstream Bandwidth for this entry.
Guaranteed Bandwidth (Up):
Limited Bandwidth (Up):
Guaranteed Bandwidth
(Down):
Specify the Limited Downstream Bandwidth for this entry.
Limited Bandwidth (Down):
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Specify the time for the entry to take effect.
Give a description for the entry.
Effective Time:
Description:
Status:
Activate or inactivate the entry.
List of Rules
You can view the information of the entries and edit them by the Action buttons.
the Downstream/Upstream Guaranteed Bandwidth is 5000kbps, while the Downstream/Upstream
Limited bandwidth is 10000kbps. This entry takes effect at 8 a.m. to 10 p.m. from Monday to
Friday.
Note:
●
●
The premise for single rule taking effect is that the bandwidth of the interface for this rule is
sufficient and not used up.
It is impossible to satisfy all the guaranteed bandwidth if the total guaranteed bandwidth specified
by all Bandwidth Control rules for certain interface exceeds the physical bandwidth of this
interface.
●
When DMZ port is disabled, it is only allowed deleting operation to the related rules.
3.3.3 Session Limit
The amount of TCP and UDP sessions supported by the router is finite. If some local hosts transmit
too many TCP and UDP sessions to the public network, the communication quality of the other local
hosts will be affected, thus it is necessary to limit the sessions of those hosts.
3.3.3.1
Session Limit
On this page, you can configure the session limit to specified PCs.
Choose the menu Advanced→Session Limit→Session Limit to load the following page.
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Figure 3-37 Session Limit
The following items are displayed on this screen:
General
Check here to enable Session Limit, otherwise all the Session Limit
entries will be disabled.
Enable Session
Limit:
Session Limit
Group:
Select a group to define the controlled users.
Enter the max. Sessions for the users.
Give a description for the entry.
Max. Sessions:
Description:
Status:
Activate or inactivate the entry.
List of Session Limit
You can view the information of the entries and edit them by the Action buttons.
group1 is 100 and this entry is enabled.
3.3.3.2
Session List
On this page, you can view the Session Limit information of hosts configured with Session Limit.
Choose the menu Advanced→Session Limit→Session List to load the following page.
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Figure 3-38 Session List
In this table, you can view the session limit information of users configured with Session Limit. Click
the <Refresh> button to get the latest information.
3.3.4 Load Balance
In this part, you can configure the traffic sharing mode of the WAN ports to optimize the resource
utilization.
3.3.4.1
Configuration
Choose the menu Advanced→Load Balance→Configuration to load the following page.
Figure 3-39 Configuration
With the box before Enable Application Optimized Routing checked, the router will consider the
source IP address and destination IP address of the packets as a whole and record the WAN port they
pass through. And then the packets with the same source IP address and destination IP address or
destination port will be forwarded to the recorded WAN port. This feature is to ensure the
multi-connected applications to work properly.
Check the box before Enable Bandwidth Based Balance Routing and select the WAN port below,
Load Balance of the specified WAN port will be enabled automatically if no routing rules are set.
Then click the <Save> button to apply.
Note:
The WAN ports not connecting to the Internet don’t support Intelligent Balance, please do not select
them.
3.3.4.2
Policy Routing
Policy Routing provides an accurate way to control the routing based on the policy defined by the
network administrator.
Choose the menu Advanced→Load Balance→Policy Routing to load the following page.
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Figure 3-40 Policy Routing
The following items are displayed on this screen:
General
Select the protocol for the entry in the drop-down list. If the protocol you
want to set is not in the list, you can add it to the list on 3.3.4.4 Protocol
page.
Protocol:
Enter the source IP range for the entry. 0.0.0.0 - 0.0.0.0 means any IP is
acceptable.
Source IP:
Enter the destination IP range for the entry. 0.0.0.0 - 0.0.0.0 means any
IP is acceptable.
Destination IP:
Source Port:
Enter the source Port range for the entry, which is effective only when the
protocol is TCP, UDP or TCP/UDP. The default value is 1 – 65535, which
means any port is acceptable.
Enter the destination port range for the entry, which is effective only when
the protocol is TCP, UDP or TCP/UDP. The default value is 1 – 65535,
which means any port is acceptable.
Destination Port:
Select the WAN port for transmitting packets.
Specify the time for the entry to take effect.
WAN:
Effective Time:
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Activate or inactivate the entry.
Status:
List of Rules
You can view the information of the entries and edit them by the Action buttons.
192.168.0.199 and Destination IP between 116.10.20.28 and 116.10.20.29 will be forwarded from
WAN1 port, regardless of the port and protocol. This entry is activated d and will take effect at 8
am to 10 pm from Monday to Friday.
3.3.4.3
Link Backup
With Link Backup function, the router will switch all the new sessions from dropped line automatically
to another to keep an always on-line network.
On this page, you can configure the Link Backup function based on actual need to reduce the traffic
burden of WAN port and improve the network efficiency.
Choose the menu Advanced→Load Balance→Link Backup to load the following page.
Figure 3-41 Link Backup
The following items are displayed on this screen:
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General
Displays all the WAN ports in use. You can drag the light-blue WAN
button to primary and backup WAN list. The color of WAN button
changing to gray indicates that the WAN port is already in the primary
and backup WAN list.
WAN Ports:
The WAN port in the secondary WAN list will share the traffic for the
WAN in the primary WAN list under the specified condition.
WAN Config:
You can select Timing or Failover Mode.
Mode:
Link Backup will be enabled if the specified effective time is reached. All
the traffic on the primary WAN will switch to the backup WAN at the
beginning of the effective time; the traffic on the backup WAN will switch
to the primary WAN at the ending of the effective time.
Timing:
Specify the premise for Failover Mode. The backup WAN port will be
enabled only when the premise is met.
Failover:
Specify the backup effective time if Timing Mode has been selected.
Then the backup WAN port will be enabled, while the primary WAN port
is disabled in the specified time period. When the start time you enter is
not earlier than the end time, the default effective time is from the start
time of the day to the end time of the next day.
Backup Effective
Time:
Status：
Activate or inactivate the entry.
List of Rules
You can view the information of the entries and edit them by the Action buttons.
WAN2 will be enabled while WAN1 is failed. This entry is enabled.
Note:
The same WAN port cannot be added to the primary and secondary WAN lists at the same time, and
one WAN port should be added to only one list.
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3.3.4.4
Protocol
On this page, you can specify the protocol for routing rules conveniently. A protocol constitutes of the
name and number. The router predefines three commonly used protocols such as TCP, UDP and
TCP/UDP. Moreover, you can also add new protocols as your wish.
Choose the menu Advanced→Load Balance→Protocol to load the following page.
Figure 3-42 Protocol
The following items are displayed on this screen:
Protocol
Name:
Enter a name to indicate a protocol. The name will display in the
drop-down list of Protocol on Access Rule page.
Enter the Number of the protocol in the range of 0-255.
Number:
List of Protocol
You can view the information of the entries and edit them by the Action buttons.
Note:
The system predefined protocols cannot be configured.
3.3.5 Routing
3.3.5.1
Static Route
Routing is the process of selecting optimized paths in a network along which to send network traffic.
Static Route is a kind of special routing configured by the administrator, which is simple, efficient, and
reliable.
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Commonly used in small-sized network with fixed topology, Static Route does not change along with
the network topology automatically. The administrator should modify the static route information
manually as long as the network topology or link status is changed.
Choose the menu Advanced→Routing→Static Route to load the following page.
Figure 3-43 Static Route
The following items are displayed on this screen:
Static Route
Destination:
Subnet Mask:
Next Hop:
Enter the destination host the route leads to.
Enter the Subnet Mask of the destination network.
Enter the gateway IP address to which the packet should be sent next.
Select the physical network interface, through which this route is
accessible.
Interface:
Defines the priority of the route. The smaller the value is, the higher the
priority is. The default value is 0. It is recommended to keep the default
value.
Metric:
Give a description for the entry.
Activate or inactivate the entry.
Description:
Status:
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List of Rules
You can view the information of the entries and edit them by the Action buttons.
The first entry in Figure 3-43 indicates: If there are packets being sent to a device with IP address
of 211.162.1.0 and subnet mask of 255.255.255.0, the router will forward the packets from WAN1
port to the next hop of 211.200.1.1.
Application Example
Network Requirements
LAN1 is under the router and it uses network segment 192.168.0.0 /24. LAN2 and LAN3 are under a
layer 3 switch and they use network segments 192.168.2.0 /24 and 192.168.3.0 /24 respectively. The IP
address of the cascading LAN port between the layer 3 switch and the router is 192.168.0.2. Now the
hosts within LAN1 desire to access the hosts within LAN2 and LAN3.
The network topology is shown as the following:
Configuration procedure
1. On the Static Route page, add a static routing rule for LAN2 with destination address 192.168.2.0
(LAN2’s IP address) and next hop address 192.168.0.2 (IP address of the cascading LAN port) as
shown in the following figure. Then click the <Add> button.
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2. Add a static routing rule for LAN3 by referring to step 2.
The static routing rules are shown in the following figure.
3.3.5.2
RIP
RIP (Routing Information Protocol) is a dynamic route protocol using distance vector algorithm to select
the optimal path. With features of easy configuration, management and implementation, it is widely used
in small and medium-sized networks such as the campus network.
The distance of RIP refers to the hop counts that a data packet passes through before reaching its
destination, the value range of which is 1–15. It means the destination cannot be reached if the value is
more than 15. Optimal path indicates the path with the fewest hop counts. RIP exchanges the route
information every 30 seconds by broadcasting UDP packets. If one router has not sent route information
in 180 seconds, the RIP of the other routers would set the distance to this router into infinity and delete
the corresponding information from route table.
RIP develops from initial RIPv1 to RIPv2 gradually. Compared with RIPv1, RIPv2 supports VLSM
(Variable Length Subnet Mask), simple plain text authentication, MD5 cryptograph authentication, CIDR
(Classless Inter-Domain Routing) and multicast.
TL-ER6120 supports both RIPv1 version and RIPv2 version, thus you can configure the RIP version
based on the actual need to improve the network performance.
Choose the menu Advanced→Routing→RIP to load the following page.
Figure 3-44 RIP
The following items are displayed on this screen:
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General
Displays the interfaces which has been physically connected or assigned
static IP.
Interface:
Enable or disable RIP protocol.
Status:
Select RIPv1 or RIPv2. RIPv2 supports multicast and broadcast.
RIP Version:
If RIPv2 is enabled, set the Password Authentication according to the actual
network situation, and the password should not be more than 15 characters.
Password
Authentication:
Here you can operate all the interfaces in bulk. All the interfaces will not apply
RIP if “Enable” option for All Interfaces is selected.
All Interfaces:
List of RIP
After RIP is enabled, the information of RIP forwarding the packets received by the router will be
displayed in the list.
The first entry in Figure 3-44 indicates: when receiving packets with destination IP is 116.10.20.28,
the router will select WAN1 which is in the same network with the destination IP as next hop and
forward data via this port. The IP address of next hop is 116.10.1.254 and the hop count is 1. The
effective time of this entry is 1 second.
Note:
●
●
RIP function cannot be set if the router is in NAT Mode. To set RIP function, please change the
System Mode to Routing or Full Mode.
The RIP function of WAN port takes effects only when the Connection Type of this WAN port is
Static IP.
3.3.5.3
Route Table
This page displays the information of the system route table.
Choose the menu Advanced→Routing→Route Table to load the following page.
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Figure 3-45 RIP
The following items are displayed on this screen:
Route Table
Destination:
Gateway:
Flags:
The Destination of route entry.
The Gateway of route entry.
The Flags of route entry. The Flags describe certain characteristics of
the route.
The logical interface of route entry.
The physical interface of route entry.
The Metric of route entry.
Logical Interface:
Physical Interface:
Metric
3.4 Firewall
3.4.1 Anti ARP Spoofing
ARP (Address Resolution Protocol) is used for analyzing and mapping IP addresses to the
corresponding MAC addresses so that packets can be delivered to their destinations correctly.
ARP functions to translate the IP address into the corresponding MAC address and maintain an ARP
Table in which the latest used IP address-to-MAC address mapping entries are stored. ARP protocol
can facilitate the Hosts in the same network segment to communicate with one another or access to
external network via Gateway. However, since ARP protocol is implemented with the premise that all
the Hosts and Gateways are trusted, there are high security risks during ARP Implementation
Procedure in the actual complex network.
The attacker may send the ARP spoofing packets with false IP address-to-MAC address mapping
entries, and then the device will automatically update the ARP table after receiving wrong ARP
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packets, which results in a breakdown of the normal communication. Thus, ARP defense technology is
generated to prevent the network from this kind of attack.
3.4.1.1
IP-MAC Binding
IP-MAC Binding functions to bind the IP address, MAC address of the host together and only allows the
Hosts matching the bound entries to access the network.
Choose the menu Firewall→Anti ARP Spoofing→IP-MAC Binding to load the following page.
Figure 3-46 IP-MAC Binding
The following items are displayed on this screen:
General
It is recommended to check all the options. You should import the IP and MAC address of the host to
IP-MAC Binding List and enable the corresponding entry before enabling “Permit the packets
matching the IP-MAC Binding entries only”.
When suffered ARP attack, the correct ARP information will be sent to the device suffering attack
initiatively by GARP (Gratuitous ARP) packets, thus the error ARP information of the device will be
replaced. You can set the packets sending rate in the Interval field.
With the box before Enable ARP Logs checked, the router will send ARP logs to the specified
IP-MAC Binding
Enter the IP Address to be bound.
IP Address:
Enter the MAC Address corresponding to the IP Address.
MAC Address:
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Give a description for the entry.
Activate or inactivate the entry.
Description:
Status:
List of Rules
You can view the information of the entries and edit them by the Action buttons.
00-19-66-83-53-CF have been bound and this entry is activated.
Note:
If all the entries in the binding list are disabled and “Permit the packets of IP-MAC Binding entries only”
option is selected and saved, the WEB management page of the router cannot be login. At the
moment, you should restore the router to factory default and login again.
3.4.1.2
ARP Scanning
ARP Scanning feature enables the router to scan the IP address and corresponding MAC address and
display them on the List of Scanning Result.
Choose the menu Firewall→Anti ARP Spoofing→ARP Scanning to load the following page.
Figure 3-47 ARP Scanning
Enter the start and the end IP addresses into the Scanning IP Range field. Then click the <Scan>
button, the router will scan all the active hosts within the scanning range and display the result in the
list.
The entries displayed on the List of Scanning Result do not mean the IP and MAC addresses are
already bound. The current status for the entry will display in the “Status” field.
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---
Indicates that the IP and MAC address of this entry are not bound and may be
replaced by error ARP information.
Indicates that this entry is imported to the list on IP-MAC Binding page, but not
effective yet.
Indicates that the IP and MAC address of this entry are already bound.
To bind the entries in the list, check these entries and click the <Import> button, then the settings will
take effect if the entries do not conflict with the existed entries.
Note:
If the local hosts suffered from ARP attack, you cannot add IP-MAC Binding entries on this page.
3.4.1.3
ARP List
On this page, the IP-MAC information of the hosts which communicated with the router recently will be
saved in the ARP list.
Choose the menu Firewall→Anti ARP Spoofing→ARP List to load the following page.
Figure 3-48 ARP List
The configurations for the entries is the same as the configuration of List of Scanning Result on 3.4.1.2
ARP Scanning page.
The unbound IP-MAC information will be replaced by new IP-MAC information or be automatically
removed from the list if it has not been communicated with others for a long time. This period is
regarded as the aging time of the ARP information.
3.4.2 Attack Defense
With Attack Defense function enabled, the router can distinguish the malicious packets and prevent
the port scanning from external network, so as to guarantee the network security.
Choose the menu Firewall→Attack Defense→Attack Defense to load the following page.
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Figure 3-49 Attack Defense
The following items are displayed on this screen:
General
Flood attack is a commonly used DoS (Denial of Service) attack,
including TCP SYN, UDP, ICMP and so on. It is recommended to
select all the Flood Defense options and specify the corresponding
thresholds. Keep the default settings if you are not sure.
Flood Defense:
Packet Anomaly refers to the abnormal packets. It is recommended to
select all the Packet Anomaly Defense options.
Packet Anomaly
Defense:
With this box checked, the router will record the defense logs.
Enable Attack
Defense Logs:
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3.4.3 MAC Filtering
On this page, you can control the Internet access of local hosts by specifying their MAC addresses.
Choose the menu Firewall→MAC Filtering→MAC Filtering to load the following page.
Figure 3-50 MAC Filtering
The following items are displayed on this screen:
General
To control the access to Internet for hosts in you private network, it is recommended to check the
box before Enable MAC Filtering and select a filtering mode according to actual situation.
MAC Filtering
Enter the MAC Address to be filtered.
Give a description for the entry.
MAC Address:
Description:
List of Rules
You can view the information of the entries and edit them by the Action buttons.
3.4.4 Access Control
3.4.4.1
URL Filtering
URL (Uniform Resource Locator) specifies where an identified resource is available and the
mechanism for retrieving it. URL Filter functions to filter the Internet URL address, so as to provide a
convenient way for controlling the access to Internet from LAN hosts.
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Choose the menu Firewall→Access Control→URL Filtering to load the following page.
Figure 3-51 URL Filtering
The following items are displayed on this screen:
General
To control the access to Internet for hosts in your private network, you are recommended to check
the box before Enable URL Filtering and select a filtering rule based on the actual situation.
URL Filtering Rule
Select the range in which the URL Filtering takes effect:
Object:
Mode:
ANY: URL Filtering will take effect to all the users.
Group: URL Filtering will take effect to all the users in group.
Select the mode for URL Filtering. “Keyword’’ indicates that all the URL
addresses including the specified keywords will be filtered. “URL Path”
indicates that the URL address will be filtered only when it exactly
matches the specified URL.
Specify the time for the entry to take effect.
Give a description for the entry.
Effective Time:
Description:
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List of Rules
You can view the information of the entries and edit them by the Action buttons.
Application Example:
Network Requirements:
Prevent the local hosts from accessing Internet website www.aabbcc.com anytime and downloading
the files with suffix of “exe” at 8:00-20:00 from Monday to Friday.
Configuration Procedure:
Select Keywords mode and type ”exe“ in the field, select URL mode and type “www.aabbcc.com” as
the following figure shows, then specify the effective time and click the <Add> button to make the
setting take effect.
3.4.4.2
Web Filtering
On this page, you can filter the desired web components.
Choose the menu Firewall→Access Control→Web Filtering to load the following page.
Figure 3-52 Web Filtering
Check the box before Enable Web Filtering and select the web components to be filtered.
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3.4.4.3
Access Rules
Choose the menu Firewall→Access Control→Access Rules to load the following page.
Figure 3-53 Access Rule
The following items are displayed on this screen:
Access Rules
Policy:
Select a policy for the entry:
Block: When this option is selected, the packets obeyed the rule
will not be permitted to pass through the router.
Allow: When this option is selected, the packets obeyed the rule
will be allowed to pass through the router.
Select the service for the entry. Only the service belonging to the
specified service type is limited by the entry. For example, if you select
“Block” for Policy and only FTP for Service, the packets of other service
types can still pass through the router. You can add new service types
Service:
Select interface for the entry. The entry will take effect when the
interface to which the data is flowing is selected. WAN, LAN or DMZ
refers to all the WAN, LAN or DMZ interfaces.
Interface:
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Select the Source IP Range for the entries, including the following
three ways:
Source:
IP/MASK: Enter an IP address or subnet mask. ("0.0.0.0/32"
means any IP).
Group: Select a predefined group of users. You can set the group
ANY: means for any users.
Select the Destination IP Range for the entries, including the following
two ways:
Destination:
IP/MASK: Enter an IP address or subnet mask. ("0.0.0.0/32"
means any IP is acceptable).
ANY: means for any users.
Specify the time for the entry to take effect.
Give a description for the entry.
Effective Time:
Description:
Priority:
Select this option to specify the priority for the added entries. The latest
enabled entry will be displayed at the end of the list by default.
List of Rules
You can view the information of the entries and edit them by the Action buttons. The smaller the
value is, the higher the priority is.
network of 192.168.0.0/24 will be not allowed to pass through the router at 8:00-20:00 from
Tuesday to Saturday.
Note:
●
●
●
For the users in the private network and not being set access rule, the default Policy is Allow.
To specify all IP addresses, type “0.0.0.0 / 32” in the Policy field.
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3.4.4.4
Service
The Service function allows you to specify the protocol and port number to be filtered for Firewall
function conveniently. Protocol name and port range constitute a service type. The router predefines
three commonly used services such as HTTP, FTP and TELNET and you can also add customized
services if needed.
Choose the menu Firewall→Access Control→Service to load the following page.
Figure 3-54 Service
The following items are displayed on this screen:
Service
Name:
Enter a name for the service. The name should not be more than 28
characters. The name will display in the drop-down list of Protocol on
Access Rule page.
Select the protocol for the service. The system predefined protocols
include TCP, UDP and TCP/UDP.
Protocol:
Enter the start and end ports to make a destination port range for the
service. The start port number cannot be greater than the end port
number.
Dest. Port:
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List of Service
You can view the information of the entries and edit them by the Action buttons.
Note:
The service types predefined by the system cannot be modified.
3.4.5 App Control
3.4.5.1
Control Rules
On this page, you can enable the Application Rules function.
Choose the menu Firewall→App Control→Control Rules to load the following page.
Figure 3-55 Application Rules
The following items are displayed on this screen:
General
Check the box before Enable Application Control to make the Application Control function take
effect. The specified application used by the specified local users will be not allowed to access the
Internet if the Application Control entry is enabled.
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Control Rules
Object:
Specify the object for the entry. You can select “Group” to limit the
predefined group, or select “ANY” to limit all the users.
If select “Group” as object, you can select the group in the drop-down list.
Group:
Click the <Application List> button to select applications from the popup
checkbox. The applications include IM, Web IM, SNS, P2P, Media, Basic
and Proxy. The default setting is to limit all the applications in the
application list except for Basic and Proxy.
Application:
Specify the time for the entry to take effect.
Give a description for the entry.
Effective Time:
Description:
Status:
Activate or inactivate the entry.
List of Rules
You can view the information of the entries and edit them by the Action buttons.
The first entry in Figure 3-55 indicates: The group1 is applied with Application Rules. You can click
<View> to view the limited applications in the popup checkbox. The effective time of this entry is
7:00-9:00 on Monday, Tuesday, Friday, Saturday and Sunday. This entry is enabled.
Note:
3.4.5.2
Database
On this page, you can upgrade the application database.
Choose the menu Firewall→App Control→Database to load the following page.
Figure 3-56 Database
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The database refers to all the applications in the application list on the Application Rules page, you can
file, and then click the <Upgrade> button to upgrade the database.
3.5 VPN
VPN (Virtual Private Network) is a private network established via the public network, generally via the
Internet. However, the private network is a logical network without any physical network lines, so it is
called Virtual Private Network.
With the wide application of the Internet, more and more data are needed to be shared through the
Internet. Connecting the local network to the Internet directly, though can allow the data exchange, will
cause the private data to be exposed to all the users on the Internet. The VPN (Virtual Private Network)
technology is developed and used to establish the private network through the public network, which
can guarantee a secured data exchange.
VPN adopts the tunneling technology to establish a private connection between two endpoints. It is a
connection secured by encrypting the data and using point-to-point authentication. The following
diagram is a typical VPN topology.
Figure 3-57 VPN – Network Topology
As the packets are encapsulated and de-encapsulated in the router, the tunneling topology
implemented by encapsulating packets is transparent to users. The tunneling protocols supported by
TL-ER6120 contain Layer 3 IPsec and Layer 2 L2TP/PPTP.
3.5.1 IKE
In the IPsec VPN, to ensure a secure communication, the two peers should encapsulate and
de-encapsulate the packets using the information both known. Therefore the two peers need to
negotiate a security key for communication with IKE (Internet Key Exchange) protocols.
Actually IKE is a hybrid protocol based on three underlying security protocols, ISAKMP (Internet
Security Association and Key Management Protocol), Oakley Key Determination Protocol, and
SKEME Security Key Exchange Protocol. ISAKMP provides a framework for Key Exchange and SA
(Security Association) negotiation. Oakley describes a series of key exchange modes. SKEME
describes another key exchange mode different from those described by Oakley.
IKE consists of two phases. Phase 1 is used to negotiate the parameters, key exchange algorithm and
encryption to establish an ISAKMP SA for securely exchanging more information in Phase 2. During
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phase 2, the IKE peers use the ISAKMP SA established in Phase 1 to negotiate the parameters for
security protocols in IPsec and create IPsec SA to secure the transmission data.
3.5.1.1
IKE Policy
On this page you can configure the related parameters for IKE negotiation.
Choose the menu VPN→IKE→IKE Policy to load the following page.
Figure 3-58 IKE Policy
The following items are displayed on this screen:
IKE Policy
Specify a unique name to the IKE policy for identification and
management purposes. The IKE policy can be applied to IPsec policy.
Policy Name:
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Select the IKE Exchange Mode in phase 1, and ensure the remote VPN
peer uses the same mode.
Exchange Mode:
Main: Main mode provides identity protection and exchanges more
information, which applies to the scenarios with higher requirement
for identity protection.
Aggressive: Aggressive Mode establishes a faster connection but
with lower security, which applies to scenarios with lower
requirement for identity protection.
Select the local ID type for IKE negotiation. IP Address: uses an IP
address as the ID in IKE negotiation. FQDN: uses a name as the ID.
Local ID Type:
Local ID:
The local WAN IP will be inputted automatically if IP Address type is
selected. If Name type is selected, enter a name for the local device as
the ID in IKE negotiation
Select the remote ID type for IKE negotiation. IP Address: uses an IP
address as the ID in IKE negotiation. FQDN: uses a name as the ID.
Remote ID Type:
Remote ID:
The remote gateway IP will be inputted automatically if IP Address type
is selected. If Name type is selected, enter the name of the remote peer
as the ID in IKE negotiation.
Select the Proposal for IKE negotiation phase 1. Up to four proposals
can be selected.
IKE Proposal:
Enter the Pre-shared Key for IKE authentication, and ensure both the
two peers use the same key. The key should consist of visible characters
without blank space.
Pre-shared Key:
Specify ISAKMP SA Lifetime in IKE negotiation.
SA Lifetime:
DPD:
Enable or disable DPD (Dead Peer Detect) function. If enabled, the IKE
endpoint can send a DPD request to the peer to inspect whether the IKE
peer is alive.
Enter the interval after which the DPD is triggered.
DPD Interval:
List of IKE Policy
In this table, you can view the information of IKE Policies and edit them by the action buttons.
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3.5.1.2
IKE Proposal
On this page, you can define and edit the IKE Proposal.
Choose the menu VPN→IKE→IKE Proposal to load the following page.
Figure 3-59 IKE Proposal
The following items are displayed on this screen:
IKE Proposal
Specify a unique name to the IKE proposal for identification and
management purposes. The IKE proposal can be applied to IPsec proposal.
Proposal Name:
Select the authentication algorithm for IKE negotiation. Options include:
Authentication:
MD5: MD5 (Message Digest Algorithm) takes a message of arbitrary
length and generates a 128-bit message digest.
SHA1: SHA1 (Secure Hash Algorithm) takes a message less than
2^64 (the 64th power of 2) in bits and generates a 160-bit message
digest.
Specify the encryption algorithm for IKE negotiation. Options include:
Encryption:
DES: DES (Data Encryption Standard) encrypts a 64-bit block of plain
text with a 56-bit key.
3DES: Triple DES, encrypts a plain text with 168-bit key.
AES128: Uses the AES algorithm and 128-bit key for encryption.
AES192: Uses the AES algorithm and 192-bit key for encryption.
AES256: Uses the AES algorithm and 256-bit key for encryption.
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Select the DH (Diffie-Hellman) group to be used in key negotiation phase
1. The DH Group sets the strength of the algorithm in bits. Options include
DH1, DH2 and DH5.
DH Group:
DH1: 768 bits
DH2: 1024 bits
DH3: 1536 bits
List of IKE Proposal
In this table, you can view the information of IKE Proposals and edit them by the action buttons.
3.5.2 IPsec
IPsec (IP Security) is a set of services and protocols defined by IETF (Internet Engineering Task Force)
to provide high security for IP packets and prevent attacks.
To ensure a secured communication, the two IPsec peers use IPsec protocol to negotiate the data
encryption algorithm and the security protocols for checking the integrity of the transmission data, and
exchange the key to data de-encryption.
IPsec has two important security protocols, AH (Authentication Header) and ESP (Encapsulating
Security Payload). AH is used to guarantee the data integrity. If the packet has been tampered during
transmission, the receiver will drop this packet when validating the data integrity. ESP is used to check
the data integrity and encrypt the packets. Even if the encrypted packet is intercepted, the third party
still cannot get the actual information.
3.5.2.1
IPsec Policy
On this page, you can define and edit the IPsec policy.
Choose the menu VPN→IPsec→IPsec Policy to load the following page.
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Figure 3-60 IPsec Policy
The following items are displayed on this screen:
General
You can enable/disable IPsec function for the router here.
IPsec Policy
Specify a unique name to the IPsec policy. Up to 28 characters
Policy Name:
Mode:
can be entered.
Select the network mode for IPsec policy. Options include:
LAN-to-LAN: Select this option when the client is a
network.
Client-to-LAN: Select this option when the client is a host.
Specify IP address range on your local LAN to identify which
PCs on your LAN are covered by this policy. It's formed by IP
address and subnet mask.
Local Subnet:
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Specify IP address range on your remote network to identify
which PCs on the remote network are covered by this policy. It's
formed by IP address and subnet mask.
Remote Subnet:
Specify the local WAN port for this Policy. The "Remote
Gateway" of the remote peer should be set to the IP address of
this WAN port.
WAN:
Enter the Remote Gateway. It can be IP address or Domain
name.
Remote Gateway:
Policy Mode:
Select the negotiation mode for the policy.
IKE: The parameters for the VPN tunnel are generated
automatically via IKE negotiations.
Manual: All settings (including the keys) for the VPN tunnel
are manually inputted and no key negotiation is needed.
IKE Mode
It is available when IKE is selected as the negotiation mode.
Specify the IKE policy. If there is no policy selection, add new
policy on VPN→IKE→IKE Policy page.
IKE Policy:
Select IPsec Proposal on IKE mode. Up to four IPsec Proposals
can be selected on IKE mode.
IPsec Proposal:
PFS:
Select the PFS (Perfect Forward Security) for IKE mode to
enhance security. This setting should match the remote peer.
With PFS feature, IKE negotiates to create a new key in
Phase2. As it is independent of the key created in Phase1, this
key can be secure even when the key in Phase1 is
de-encrypted. Without PFS, the key in Phase2 is created based
on the key in Phase1 and thus once the key in Phase1 is
de-encrypted, the key in Phase2 is easy to be de-encrypted, in
this case, the communication secrecy is threatened.
Specify IPsec SA Lifetime for IKE mode.
SA Lifetime:
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Activate or inactivate the entry.
Status:
Manual Mode
Select the IPsec Proposal. Only one proposal can be selected
on Manual mode. You need to first create the IPsec Proposal.
IPsec Proposal:
Specify the Incoming SPI (Security Parameter Index) manually.
The Incoming SPI here must match the Outgoing SPI value at
the other end of the tunnel, and vice versa.
Incoming SPI:
Specify the inbound AH Authentication Key manually if AH
protocol is used in the corresponding IPsec Proposal. The
inbound key here must match the outbound AH authentication
key at the other end of the tunnel, and vice versa.
AH Authentication Key-In:
Specify the inbound ESP Authentication Key manually if ESP
protocol is used in the corresponding IPsec Proposal. The
inbound key here must match the outbound ESP authentication
key at the other end of the tunnel, and vice versa.
ESP Authentication Key-In:
ESP Encryption: Key-In:
Specify the inbound ESP Encryption Key manually if ESP
protocol is used in the corresponding IPsec Proposal. The
inbound key here must match the outbound ESP encryption key
at the other end of the tunnel, and vice versa.
Specify the Outgoing SPI (Security Parameter Index) manually.
The Outgoing SPI here must match the Incoming SPI value at
the other end of the tunnel, and vice versa.
Outgoing SPI:
Specify the outbound AH Authentication Key manually if AH
protocol is used in the corresponding IPsec Proposal. The
outbound key here must match the inbound AH authentication
key at the other end of the tunnel, and vice versa.
AH Authentication Key-Out:
Specify the outbound ESP Authentication Key manually if ESP
protocol is used in the corresponding IPsec Proposal. The
outbound key here must match the inbound ESP authentication
key at the other end of the tunnel, and vice versa.
ESP Authentication Key-Out:
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Specify the outbound ESP Encryption Key manually if ESP
protocol is used in the corresponding IPsec Proposal. The
outbound key here must match the inbound ESP encryption key
at the other end of the tunnel, and vice versa.
ESP Encryption Key-Out:
List of IPsec Policy IPsec
In this table, you can view the information of IPsec policies and edit them by the action buttons.
The first entry in Figure 3-60 indicates: this is an IPsec tunnel, the local subnet is 192.168.0.0/24,
the remote subnet is 192.168.3.0/24 and this tunnel is using IKE automatic negotiation. It is
enabled.
Tips:
●
●
0.0.0.0.0/32 indicates all IP addresses.
Refer to Appendix Troubleshooting 5 for the configuration of subnet.
3.5.2.2
IPsec Proposal
On this page, you can define and edit the IPsec proposal.
Choose the menu VPN→IPsec→IPsec Proposal to load the following page.
Figure 3-61 IPsec Proposal
The following items are displayed on this screen:
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IPsec Proposal
Proposal Name:
Specify a unique name to the IPsec Proposal for identification and
management purposes. The IPsec proposal can be applied to IPsec
policy.
Select the security protocol to be used. Options include:
Security Protocol:
AH Authentication:
ESP Authentication:
AH: AH (Authentication Header) provides data origin
authentication, data integrity and anti-replay services.
ESP: ESP (Encapsulating Security Payload) provides data
encryption in addition to origin authentication, data integrity, and
anti-replay services.
Select the algorithm used to verify the integrity of the data for AH
authentication. Options include:
MD5: MD5 (Message Digest Algorithm) takes a message of
arbitrary length and generates a 128-bit message digest.
SHA: SHA (Secure Hash Algorithm) takes a message less than the
64th power of 2 in bits and generates a 160-bit message digest.
Select the algorithm used to verify the integrity of the data for ESP
authentication. Options include:
MD5: MD5 (Message Digest Algorithm) takes a message of
arbitrary length and generates a 128-bit message digest.
SHA: SHA (Secure Hash Algorithm) takes a message less than the
64th power of 2 in bits and generates a 160-bit message digest.
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Select the algorithm used to encrypt the data for ESP encryption.
Options include:
ESP Encryption:
NONE: Performs no encryption.
DES: DES (Data Encryption Standard) encrypts a 64-bit block of plain
text with a 56-bit key. The key should be 8 characters.
3DES: Triple DES, encrypts a plain text with 168-bit key. The key should
be 24 characters.
AES128: Uses the AES algorithm and 128-bit key for encryption. The
key should be 16 characters.
List of IPsec Proposal
In this table, you can view the information of IPsec Proposals and edit them by the action buttons.
3.5.2.3
IPsec SA
This page displays the information of the IPsec SA (Security Association).
Choose the menu VPN→IPsec→IPsec SA to load the following page.
Figure 3-62 IPsec SA
Figure 3-62 displays the connection status of the NO.1 entry in the List of IPsec policy in Figure 3-60.
As shown in the figure, the router is using WAN2 for tunnel connection, and the IP address of WAN2
and the default gateway of remote peer are 172.30.70.151 and 172.30.70.161 respectively. Security
protocol and other parameters for IPsec tunnel and the remote router should be configured the same.
As Security Association is unidirectional, an ingoing SA and an outgoing SA are created to protect data
flows for each tunnel after IPsec tunnel is successfully established. The ingoing SPI value and
outgoing SPI value are different. However, the Incoming SPI value must match the Outgoing SPI value
at the other end of the tunnel, and vice versa. The connection status on the remote endpoint of this
tunnel is as the following figure shows. The SPI value is obtained via auto-negotiation.
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3.5.3 L2TP/PPTP
Layer 2 VPN tunneling protocol consists of L2TP (Layer 2 Tunneling Protocol) and PPTP (Point to
Point Tunneling Protocol).
Both L2TP and PPTP encapsulate packet and add extra header to the packet by using PPP (Point to
Point Protocol). Table depicts the difference between L2TP and PPTP.
Protocol
Media
Tunnel
Length of Header
Authentication
PPTP
IP network
Single tunnel
6 bytes at least
Not supported
IP network of UDP, frame
relay virtual circuit, X.25
virtual circuit
L2TP
Multiple tunnels 4 bytes at least
Supported
3.5.3.1
L2TP/PPTP Tunnel
On this page, you can configure the L2TP/PPTP VPN.
Choose the menu VPN→L2TP/PPTP→L2TP/PPTP Tunnel to load the following page.
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Figure 3-63 L2TP/PPTP Tunnel
The following items are displayed on this screen:
General
Specify whether to enable VPN-to-Internet function. If enabled, the
VPN client is permitted to access the LAN of the server and Internet.
Enable VPN-to-Internet:
Specify the interval to send hello packets.
Hello Interval:
Enter the Primary/Secondary DNS server address. The default IP is
"0.0.0.0", which means the LAN IP of the router is used as the DNS
server address.
Primary/Secondary
DNS
L2TP/PPTP Tunnel
Protocol:
Select the protocol for VPN tunnel. Options include L2TP and PPTP.
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Specify the working mode for this router. Options include:
Mode:
Client: In this mode, the device sends a request to the remote
L2TP/PPTP server initiatively for establishing a tunnel.
Server: In this mode, the router responds the request from the
remote client for establishing a tunnel.
Enter the account name of L2TP/PPTP tunnel. It should be configured
identically on server and client.
Account Name:
Password:
Tunnel:
Enter the password of L2TP/PPTP tunnel. It should be configured
identically on server and client.
Select the network mode for the tunnel. Options include:
LAN-to-LAN: Select this option when the L2TP/PPTP client is a
LAN. The tunneling request is always initiated by a router.
Client-to-LAN: Select this option when the L2TP/PPTP client is a
single PC.
Specify the maximum connections that the tunnel can support. This
item is available for Client-to-LAN tunnel type on Server mode.
Max Connections:
WAN:
Specify the WAN port to transmit the packets. This item is available
for Client mode.
Enter the IP address of L2TP/PPTP server. (It’s always the WAN IP
address of the remote peer of L2TP/PPTP tunnel.) This item is
available for Client mode.
Server IP:
Specify whether to enable the encryption for the tunnel. If enabled,
the L2TP tunnel will be encrypted by IPsec, and the PPTP tunnel will
be encrypted by MPPE.
Encryption:
Enter the Pre-shared Key for IKE authentication. This item is available
for L2TP tunnel.
Pre-shard Key:
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Enter the IP address of the client which is allowed to connect to this
L2TP/PPTP server. The default IP "0.0.0.0" means any IP address is
acceptable.
Client IP:
Select the IP Pool Name to specify the address range for the server's
IP assignment. This item is available for Server mode.
IP Address Pool:
Remote Subnet:
Enter the IP address range of your remote network. (It's always the IP
address range of LAN on the remote peer of VPN tunnel.) It’s the
combination of IP address and subnet mask.
Activate or inactivate the entry.
Status
List of Configurations
In this table, you can view your configurations of the tunnels and edit them by the action buttons.
is test, the password can be configured, and the router is configured in Client mode. The remote
server is 116.10.10.10 and the remote subnet is 192.168.2.0/24. This entry is enabled.
3.5.3.2
IP Address Pool
On this page, you can configure the IP Address Pool.
Choose the menu VPN→L2TP/PPTP→IP Address Pool to load the following page.
Figure 3-64 IP Address Pool
The following items are displayed on this screen:
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IP Address Pool
Pool Name:
Specify a unique name to the IP Address Pool for identification and
management purposes.
Specify the start and the end IP address for IP Pool. The start IP address
should not exceed the end address and the IP ranges must not overlap.
IP Address Range:
List of IP Pool
In this table, you can view the information of IP Pools and edit them by the action buttons.
3.5.3.3
List of L2TP/PPTP Tunnel
This page displays the information and status of the tunnels.
Choose the menu VPN→L2TP/PPTP→List of L2TP/PPTP Tunnel to load the following page.
Figure 3-65 List of L2TP/PPTP Tunnel
Figure 3-65 displays the connection status of the NO.1 entry in the list of tunnel in Figure 3-64. This
tunnel has been successfully established. Each tunnel has a Tunnel ID and a Session ID. The ID value
in client corresponds to that in server. The connection information of this tunnel in the server is shown
as the figure below.
Every time a tunnel connection is established, a tunnel ID and a session ID are created. In a router, the
ID values of different tunnels are different. A tunnel can create different ID values when it is
reconnected.
3.6 Services
3.6.1 PPPoE Server
The router can be configured as a PPPoE server to specify account and IP address to users in LAN and
thus you can control the dial-up of users for a high efficiency in network management.
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The PPPoE configuration can be implemented on General, IP Address Pool, Account, Exceptional
IP and List of Account pages.
3.6.1.1
General
On this page, you can configure PPPoE function globally.
Choose the menu Services→PPPoE Server→General to load the following page.
Figure 3-66 General
The following items are displayed on this screen:
General
PPPoE Server:
Specify whether to enable the PPPoE Server function.
Specify whether to enable the Dial-up Access Only function. If enabled,
only the Dial-in Users and the user with Exceptional IP can access the
Internet.
Dial-up Access Only:
PPPoE User Isolation:
Specify whether to allow the Dial-in Users to communicate with one
another.
Enter the Primary/Secondary DNS server address. The default is
0.0.0.0.
Primary/Secondary
DNS:
Specify the maximum number of the sessions for PPPoE server. The
default is 256.
Max Sessions:
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Specify the maximum number of Echo-Requests sent by the server to
wait for response. The default is 10. The link will be dropped when the
number of the unacknowledged LCP echo requests reaches your
specified Max Echo-Requests.
Max Echo-Requests:
Enter the maximum idle time. The session will be terminated after it
has been inactive for this specified period. It can be 0-10080 minutes.
If you want your Internet connection to remain on at all times, enter 0
in the Idle Timeout field. The default value is 30.
Idle Timeout:
Select the Authentication type. It can be Local authentication and
Remote authentication. Select Local authentication for authentication
in PPPoE server and select Remote authentication for authentication
in the remote server.
Authentication:
Auth Protocol:
Select at least one authentication protocol for Local Authentication.
PAP, transferring username and password in plain text in the
network, is used in a less secured network.
CHAP is more secured for it adopts three handshakes and does
not transfer password in plain text.
MS-CHAP, put forward by Microsoft, adopts a different encryption
algorithm of CHAP.
MS-CHAP v2 with a higher security is an improved version of
MS-CHAP.
It is available when Remote Authentication is selected. RADIUS
(Remote Authentication Dial In User Service) provides an
authentication for dial-up users. Enter the Radius Server address for
Remote authentication.
Radius Server:
Shared Key:
Enter the Shared Key for Remote authentication. It should be the
same to the shared key of the Radius Server.
3.6.1.2
IP Address Pool
On this page, you can define or edit the IP Address Pool.
Choose the menu Services→PPPoE Server→IP Address Pool to load the following page.
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Figure 3-67 IP Address Pool
The following items are displayed on this screen:
IP Address Pool
Specify a unique name to the IP Address Pool for identification and
management purposes.
Pool Name:
Specify the start and the end IP address for IP Pool. The start IP address
should not exceed the end address and the IP address ranges must not
overlap.
IP Address Range:
List of IP Pool
In this table, you can view the information of IP Address Pools and edit them by the Action
buttons.
3.6.1.3
Account
On this page, you can configure the PPPoE account.
Choose the menu Services→PPPoE Server→Account to load the following page.
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Figure 3-68 Account
The following items are displayed on this screen:
Account
Enter the account name. This name should not be the same with the
one in L2TP/PPTP connection settings.
Account Name:
Enter the password.
Password:
Select the IP Address Assigned Mode for IP assignment.
IP Address Assigned
Mode:
Static: Select this option to assign a static IP address to the client.
Dynamic: Select this option to assign available IP addresses to the
client automatically.
It's available on Static mode. Enter a static IP address for the client.
Static IP Address:
IP Address Pool:
It's available on Dynamic mode. Select an IP Address Pool to make a
range to assign dynamic IPs.
Specify the maximum number of sessions for the client. The default
value is 1.
Max Sessions:
Specify the Expiration Date of the account. The default is 2099-1-1.
Expiration Date:
Description:
Enter the description for management and search purposes. Up to 28
characters can be entered.
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Activate or inactivate the entry.
Status:
Select a MAC Binding type from the pull-down list. Options include:
MAC Binding:
Disable: Select this option to disable the MAC Binding function.
Manual: Select this option to bind the account to a MAC address
manually. Only from the Host with this MAC address can the
account log on to the server.
Automatical: Select this option to bind the account to the MAC
address of its first login automatically. Only from the Host with this
MAC address can the account log on to the server.
It is available when Manually is selected. Enter the MAC address of the
Host to bind with the account.
MAC Address:
Enter a time after which the connection will be dropped. To keep the
connection always on, enter 0 in the Session Timeout field. The default
is 48. If Enable Advanced Account Features is not selected, the
Session Timeout value is 0 by default.
Session Timeout:
List of Account
In this table, you can view the information of accounts and edit them by the Action buttons.
3.6.1.4
Exceptional IP
When the Dial-up Access Only function is enabled, only the Dial-in Users and the user with
Exceptional IP can access the Internet. On this page, you can specify the Exceptional IP.
Choose the menu Services→PPPoE Server→Exceptional IP to load the following page.
Figure 3-69 Exceptional IP
The following items are displayed on this screen:
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Exceptional IP
Specify the start and the end IP address to make an exceptional IP address
range. This range should be in the same IP range with LAN port or DMZ
port of the router. The start IP address should not exceed the end address
and the IP address ranges must not overlap.
IP Address Range:
Give a description to the exceptional IP address range for identification.
Activate or inactivate the entry.
Description:
Status:
List of Exceptional IP
In this table, you can view the information of Exceptional IPs and edit them by the Action buttons.
3.6.1.5
List of Account
On this page, you can view the detailed information of all accounts you have established.
Choose the menu Services→PPPoE Server→List of Account to load the following page.
Figure 3-70 List of Account
Figure 3-70 displays the connection information of PPPoE users. Click
Click the <Disconnect All> button to disconnect all accounts.
to disconnect the account.
3.6.2 E-Bulletin
With E-Bulletin function, bulletin information can be released to the specified users. On this page you
can edit the bulletin content and specify the receiving user group.
Choose the menu Services→E-Bulletin to load the following page.
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Figure 3-71 E-Bulletin
The following items are displayed on this screen:
General
Specify whether to enable electronic bulletin function.
Specify the interval to release the bulletin.
Specify whether to log the E-Bulletin.
Enable E-Bulletin:
Interval:
Enable Logs:
E-Bulletin
Enter a title for the bulletin.
Title:
Enter the content of the bulletin.
Content:
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Select the object of this bulletin. Options include:
Object:
ANY: The bulletin will be released to all the users and the PCs on the
LAN.
Group: The bulletin will be released to the users in the selected group.
You can click <
and click <
> button to add a group to the selected group
> to remove a group from the selected group.
Group is created on User Group→Group page.
Specify the effective time for the bulletin. Only one bulletin can be set for
the object at the same time.
Effective Time:
Enter the name of the bulletin's publisher.
Enter the description for the bulletin.
Activate or inactivate the entry.
Publisher:
Description:
Status:
List of E-Bulletin
In this table, you can view the existing bulletins and edit them by the Action button.
released to the Group1 from 8am to 20pm on Thursday and Friday every a bulletin interval. (the
interval in the figure is 30 min). This entry is enabled.
Tips:
For the configuration for groups and users, please refer to the User Group section.
3.6.3 Dynamic DNS
DDNS (Dynamic DNS) service allows you to assign a fixed domain name to a dynamic WAN IP
address, which enables the Internet hosts to access the router or the hosts in LAN using the domain
names.
As many ISPs use DHCP to assign public IP addresses in WAN, the public IP address assigned to the
client is unfixed. In this way, it’s very difficult for other clients to get the latest IP address of this client
for access.
DDNS (Dynamic DNS) server provides a fixed domain name for DDNS client and maps its latest IP
address to this domain name. When DDNS server works, DDNS client informs the DDNS server of the
latest IP address, the server will update the mappings between the domain name and IP address in
DNS database. Therefore, the users can use the same domain name to access the DDNS client even
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if the IP address of the DDNS client has changed. DDNS is usually used for the Internet users to
access the private website and FTP server, both of which are established based on Web server.
The router, as a DDNS client, cannot provide DDNS service. Prior to using this function, be sure you
have registered on the official websites of DDNS service providers for username, password and
domain name. TL-ER6120 router offers PeanutHull DDNS client, Dyndns DDNS client, NO-IP DDNS
client and Comexe DDNS client.
The Dynamic DNS can be implemented on DynDNS DDNS, No-IP DDNS, Peanuthull DDNS and
Comexe DDNS pages.
3.6.3.1
DynDNS
On this page, you can configure DynDNS client.
Choose the menu Services→Dynamic DNS→DynDNS to load the following page.
Figure 3-72 DynDNS DDNS
The following items are displayed on this screen:
Dyndns DDNS
Enter the Account Name of your DDNS account. If you have not
registered, click <Go to register> to go to the website of Dyndns for
register.
Account Name:
Enter the password of your DDNS account.
Password:
Enter the Domain Name that you registered with your DDNS service
provider.
Domain Name:
Activate or inactivate DDNS service here.
DDNS Service:
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Displays the WAN port for which Dyndns DDNS is selected.
Displays the current status of DDNS service
WAN Port:
DDNS Status:
Offline: DDNS service is disabled.
Connecting: client is connecting to the server.
Online: DDNS works normally.
Authorization fails: The Account Name or Password is incorrect.
Please check and enter it again.
List of DynDNS Account
In this table, you can view the existing DDNS entries or edit them by the Action button.
3.6.3.2
No-IP
On this page you can configure NO-IP DDNS client.
Choose the menu Services→Dynamic DNS→No-IP to load the following page.
Figure 3-73 NO-IP DDNS
The following items are displayed on this screen:
No-IP DDNS
Enter the Account Name of your DDNS account. If you have not
registered, click <Go to register> to go to the website of No-IP for register.
Account Name:
Enter the password of your DDNS account.
Password:
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Enter the Domain Name that you registered with your DDNS service
provider.
Domain Name:
Activate or inactivate DDNS service here.
DDNS Service:
WAN Port:
Displays the WAN port for which No-IP DDNS is selected.
Displays the current status of DDNS service
DDNS Status:
Offline: DDNS service is disabled.
Connecting: client is connecting to the server.
Online: DDNS works normally.
Authorization fails: The Account Name or Password is incorrect.
Please check and enter it again.
List of No-IP Account
In this table, you can view the existing DDNS entries or edit them by the Action button.
3.6.3.3
PeanutHull
On this page you can configure PeanutHull DDNS client.
Choose the menu Services→Dynamic DNS→PeanutHull to load the following page.
Figure 3-74 PeanutHull DDNS
The following items are displayed on this screen:
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PeanutHull DDNS
Account Name:
Enter the Account Name of your DDNS account. If you have not
registered, click <Go to register> to go to the website of PeanutHull for
register.
Enter the password of your DDNS account.
Password:
Activate or inactivate DDNS service here.
DDNS Service:
WAN Port:
Displays the WAN port for which PeanutHull DDNS is selected.
Displays the DDNS service type, including Professional service and
Standard service.
Service Type:
Displays the current status of DDNS service
DDNS Status:
Offline: DDNS service is disabled.
Connecting: client is connecting to the server.
Online: DDNS works normally.
Authorization fails: The Account Name or Password is incorrect.
Please check and enter it again.
Displays the domain names obtained from the DDNS server. Up to 16
domain names can be displayed here.
Domain Name:
List of PeanutHull Account
In this table, you can view the existing DDNS entries or edit them by the Action button.
3.6.3.4
Comexe
On this page you can configure Comexe DDNS client.
Choose the menu Services→Dynamic DNS→Comexe to load the following page.
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Figure 3-75 Comexe DDNS
The following items are displayed on this screen:
Comexe DDNS
Enter the Account Name of your DDNS account. If you have not
registered, click <Go to register> to go to the website of Comexe for
register.
Account Name:
Enter the password of your DDNS account.
Password:
Enter the Domain Name that you registered with your DDNS service
provider.
Domain Name 1:
Optional. Enter the Domain Name that you registered with your DDNS
service provider.
Domain Name 2:
Domain Name 3:
Domain Name 4
Domain Name 5:
Optional. Enter the Domain Name that you registered with your DDNS
service provider.
Optional. Enter the Domain Name that you registered with your DDNS
service provider.
Optional. Enter the Domain Name that you registered with your DDNS
service provider.
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Activate or inactivate DDNS service here.
DDNS Service:
WAN Port:
Displays the WAN port for which Comexe DDNS is selected.
Displays the current status of DDNS service.
DDNS Status:
Offline: DDNS service is disabled.
Connecting: Client is connecting to the server.
Online: DDNS works normally.
Authorization fails: The Account Name or Password is incorrect.
Please check and enter it again.
List of Comexe Account
In this table, you can view the existing DDNS entries or edit them by the Action button.
3.6.4 UPnP
Devices based on UPnP (Universal Plug and Play) protocol from different manufacturer can
automatically discover and communicate with one another.
If UPnP groupware are installed in the host in LAN and UPnP function is enabled for the router, the
host in LAN can automatically open the corresponding port to allow the UPnP application in WAN to
access the resource of the host in LAN via this port, so that the functions limited to NAT can work
normally. For example, MSN Messenger installed in Windows XP and Windows ME system is using
UPnP protocol when audio and video communications are processing.
On this page you can configure UPnP service.
Choose the menu Services→UPnP to load the following page.
Figure 3-76 UPnP
The following items are displayed on this screen:
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General
UPnP Function:
Enable or disable the UPnP function globally.
List of UPnP Mapping
After UPnP is enabled, all UPnP connection rules will be displayed in the list of UPnP Mapping.
router will be forwarded to port 12856 in 192.168.0.101 server in LAN.
Note:
●
●
When using UPnP function, make sure the UPnP is enabled for the router, and the operating
system and applications in the host support UPnP service.
As some Trojan and viruses can open the specific port using UPnP service resulting in hacker
attack on the host, be careful of using UPnP service.
3.7 Maintenance
3.7.1 Admin Setup
3.7.1.1
Administrator
On this page, you can modify the factory default user name and password of the router.
Choose the menu Maintenance→Admin Setup→Administrator to load the following page.
Figure 3-77 Administrator
The following items are displayed on this screen:
Administrator
Enter the current user name of the router.
Enter the current password of the router.
Current User Name:
Current Password:
New User Name:
Enter a new user name for the router.
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Enter a new password for the router.
New Password:
Re-enter the new password for confirmation.
Confirm New
Password:
Note:
●
●
The factory default password and user name are both admin.
You should enter the new user name and password when next login if the current username and
password has been changed.
●
The new user name and password must not exceed 31 characters in length and must consist of
numbers or letters. All the fields are case-sensitive.
3.7.1.2
Login Parameter
On this page, you can configure and modify the Web and Telnet port.
Choose the menu Maintenance→Admin Setup→Login Parameter to load the following page.
Figure 3-78 Login Parameter
The following items are displayed on this screen:
General
Enter the Web Management Port for the router.
Enter the Telnet Management Port for the router.
Web Management Port:
Telnet Management Port:
Web Idle Timeout:
Enter a timeout period that the router will log you out of the
Web-based Utility after a specified period (Web Idle Timeout) of
inactivity.
Enter a timeout period that the router will log the remote PCs out of
the Web-based Utility after a specified period (Telnet Idle Timeout)
of inactivity.
Telnet Idle Timeout:
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Note:
●
●
The default Web Management Port is 80. If the port is changed, you should type in the new
Web Management Port is changed to 88, type http://192.168.0.1:88 in the address filed to login
the router.
The new timeout period will take effect when next login.
Application Example
Network Requirements
Allow the IP address within 210.10.10.0/24 segment to manage the router with IP address of
210.10.10.50 remotely.
Configuration Procedure
Type 210.10.10.0/24 in the Subnet/Mask field on Remote Management page and enable the entry as the
following figure shows.
Then type the corresponding port number in Web Management Port and Telnet Management Port fields
as the following figure shows.
Finally, start the web browser and type 210.10.10.50 in the URL field to log in the Web management
page of the router.
3.7.1.3
Remote Management
On this page you can configure the Remote Management function. This feature allows managing your
router from a remote location via the Internet.
Choose the menu Maintenance→Setup→Remote Management to load the following page.
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Figure 3-79 Remote Management
The following items are displayed on this screen:
Remote Management
Subnet/Mask:
Specify a single IP address or network address for the hosts desired to
access the router from external network.
Status:
Activate or inactivate the entry.
List of Subnet
In this list, you can view the Remote Management entries and edit them by the Action buttons.
The first entry in Figure 3-79 indicates that: The hosts with IP address in subnet of 192.168.2.0/24
are allowed to access the router and this entry is activated.
3.7.2 Management
3.7.2.1
Factory Defaults
Choose the menu Maintenance→Management→Factory Defaults to load the following page.
Figure 3-80 Factory Defaults
Click the <Restore to Factory Defaults> button to reset all configuration settings to their default values.
The default IP address is 192.168.0.1; the default login user name and password are both admin.
3.7.2.2
Export and Import
Choose the menu Maintenance→Management→Export and Import to load the following page.
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Figure 3-81 Export and Import
The following items are displayed on this screen:
Configuration Version
Displays the current Configuration version of the router.
Export
Click the <Export> button to save the current configuration as a file to your computer. You are
suggested to take this measure before upgrading or modifying the configuration.
Import
Click the <Browse> button to locate the update file for the device, or enter the exact path to the
saved file in the text box. Then click the <Import> button to restore the saved setting.
Note:
●
●
To avoid any damage, please don’t power down the router while being restored.
Configurations may be lost if the configuration file you imported varies greatly from current
configurations.
3.7.2.3
Reboot
Choose the menu Maintenance→Management→Reboot to load the following page.
Figure 3-82 Reboot
Click the <Reboot> button to reboot the router.
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The configuration will not be lost after rebooting. The Internet connection will be temporarily interrupted
while rebooting.
Note:
To avoid damage, please don't turn off the device while rebooting.
3.7.2.4
Firmware Upgrade
Choose the menu Maintenance→Management →Firmware Upgrade to load the following page.
Figure 3-83 Firmware Upgrade
To upgrade the router is to get more functions and better performance. Go to http://www.tp-link.com to
download the updated firmware.
Type the path and file name of the update file into the “File” field. Or click the <Browse> button to locate
the update file. Then click the <Upgrade> button to complete.
Note:
●
●
●
After upgrading, the device will reboot automatically.
To avoid damage, please don't turn off the device while upgrading.
You are suggested to backup the configuration before upgrading.
3.7.3 License
Choose the menu Maintenance→License to load the following page.
On this page, you can view the licensed features for the device.
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Figure 3-84 License
3.7.4 Statistics
3.7.4.1
Interface Traffic Statistics
Interface Traffic Statistics screen displays the detailed traffic information of each port and extra
information of WAN ports.
Choose the menu Maintenance→Statistics→Interface Traffic Statistics to load the following page.
Figure 3-85 Interface Traffic Statistics
The following items are displayed on this screen:
Interface Traffic Statistics
Displays the interface.
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Rate Rx：
Rate Tx:
Displays the rate for receiving data frames.
Displays the rate for transmitting data frames.
Displays the number of packets received on the interface.
Displays the number of packets transmitted on the interface.
Displays the bytes of packets received on the interface.
Displays the bytes of packets transmitted on the interface.
Packets Rx:
Packets Tx:
Bytes Rx:
Bytes Tx:
Advanced WAN Information
Displays the interface.
Interface:
Displays the amount of IP Fragments received by WAN port.
Displays the rate for transmitting data frames.
IP Fragment Rx:
Abnormal IP Packets Rx:
3.7.4.2
IP Traffic Statistics
IP Traffic Statistics screen displays the detailed traffic information of each PC on LAN or DMZ.
Choose the menu Maintenance→Statistics→IP Traffic Statistics to load the following page.
Figure 3-86 IP Traffic Statistics
The following items are displayed on this screen:
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General
Allows you to enable or disable IP Traffic Statistics.
Enable IP Traffic
Statistics:
Allows you to enable/disable refreshing the IP Traffic Statistics
automatically. The default refresh interval is 10 seconds.
Enable Auto-refresh:
Traffic Statistics
Direction:
Select the direction in the drop-down list to get the Flow Statistics of the
specified direction.
IP Traffic Statistics
This table displays the detailed traffic information of corresponding PCs.
Sorted by: Select the rule for displaying the traffic information.
3.7.5 Diagnostics
3.7.5.1
Diagnostics
This router provides Ping test and Tracert test functions for network diagnose.
Choose the menu Maintenance→Diagnostics→Diagnostics to load the following page.
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Figure 3-87 Diagnostics
The following items are displayed on this screen:
Ping
Destination IP/Domain:
Enter destination IP address or Domain name here. Then select a
port for testing, if you select “Auto”, the router will select the
interface of destination automatically. After clicking <Start> button,
the router will send Ping packets to test the network connectivity
and reachability of the host and the results will be displayed in the
box below.
Tracert
Destination IP/Domain:
Enter destination IP address or Domain name here. Then select a
port for testing, if Auto is selected, the router will select the interface
of destination automatically. After clicking the <Start> button, the
router will send Tracert packets to test the connectivity of the
gateways during the journey from the source to destination of the
test data and the results will be displayed in the box below.
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3.7.5.2
Online Detection
On this page, you can detect the WAN port is online or not.
Choose the menu Maintenance→Diagnostics→Online Detection to load the following page.
Figure 3-88 Online Detection
The following items are displayed on this screen:
General
Port:
Select the port to be detected.
Detecting:
Activate or inactivate Online Detection function. When Online Detection is
active, WAN status will depend on the result of both PING and DNS
Lookup. When Online Detection is inactive, WAN status will be detected
according to physical connection status and dial-up status.
Mode:
Detect automatically or Manually. In Auto mode, gateway will be selected
as destination for PING detection, DNS server of WAN port will be
selected as destination for DNS Lookup. In Manual Mode, you can
configure the destination for PING and DNS Lookup manually.
Ping:
Enter the destination IP for Ping in Manual mode. 0.0.0.0 means PING
detection is disabled.
DNS Lookup:
Enter the IP address of DNS server in Manual mode. 0.0.0.0 means DNS
Lookup is disabled.
List of WAN status
Port:
Displays the detected WAN port.
Detection:
WAN Status:
Displays whether the Online Detection is enabled.
Display the detecting results.
3.7.6 Time
3.7.6.1
Time
System Time is the time displayed while the router is running. On this page you can configure the system
time and the settings here will be used for other time-based functions like Access Rule, PPPoE and
Logs.
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Choose the menu Maintenance→Time→Time to load the following page.
Figure 3-89 Time
The following items are displayed on this screen:
Current Time
System Time:
Time Zone:
Status:
Displays the current date and time of the router.
Displays the current time zone of the router.
Displays the status of time capturing.
Config
Get UTC:
When this option is selected, you can configure the time zone and the
IP address for the NTP server. The router will get UTC automatically if
it has connected to an NTP server.
Time Zone: Select the time zone for the router.
Primary/Secondary NTP Server: Enter the IP address or domain
name of the NTP server.
Manual:
With this option selected, you can set the date and time manually.
With this option selected, the administrator PC’s clock is utilized.
Synchronize with
PC’S Clock:
Note:
●
●
If Get UTC function cannot be used properly, please add an entry with UDP port of 123 to the
firewall software of the PC.
The time will be lost when the router is restarted. The router will obtain UTC time automatically
from Internet.
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3.7.6.2
Daylight Saving Time
On this page you can configure the Daylight Saving Time of the router.
Choose the menu Maintenance→Time→Daylight Saving Time to load the following page.
Figure 3-90 Daylight Saving Time
The following items are displayed on this screen:
Daylight Saving Time(DST) State
Show the work state of DST.
Daylight Saving Time(DST) Config
DST Status:
Enable or disable the DST.
Predefined Mode:
Select a predefined DST configuration.
USA: Second Sunday in March, 02:00 ~ First Sunday in November,
02:00.
European: Last Sunday in March, 01:00 ~ Last Sunday in October,
01:00.
Australia: First Sunday in October, 02:00 ~ Fisrt Sunday in April,
03:00.
New Zealand: Last Sunday in September, 02:00 ~ First Sunday in
April, 03:00.
Recurring Mode:
Specify the DST configuration in recurring mode. This configuration is
recurring in use.
Time Offset: Specify the time adding in minutes when Daylight
Saving Time comes.
Start/End Time: Select the start time and end time of Daylight
Saving Time. The start time is standard time, and the end time is
Daylight Saving Time.
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Date Mode:
Specify the DST configuration in Date mode. This configuration is
one-off in use.
Time Offset: Specify the time adding in minutes when Daylight
Saving Time comes.
Start/End Time: Select the start time and end time of Daylight
Saving Time. The start time is standard time, and the end time is
Daylight Saving Time.
Note:
●
●
When the DST is disabled, the predefined mode, recurring mode and date mode cannot be
configured.
When the DST is enabled, the default daylight saving time is of European in predefined mode.
3.7.7 Logs
The Log system of router can record, classify and manage the system information effectively.
Choose the menu Maintenance→Logs→Logs to load the following page.
Figure 3-91 Logs
List of Logs
List of Logs displays the system log information in log buffer.
Config
Enable Auto-refresh:
Severity:
With this option selected, the page will refresh automatically every 5
seconds.
Displays the severity level of the log information. You can select a
severity level to display the log information with the same level.
Send System Logs:
Select Send System Logs and specify the server IP, then the new
added logs will be sent to the specified server.
The Logs of switch are classified into the following eight levels.
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Severity
Level Description
The system is unusable.
Emergency
0
1
Action must be taken immediately.
Critical conditions
alerts
critical
2
3
4
5
6
7
Error conditions
errors
Warnings conditions
warnings
notifications
informational
debugging
Normal but significant conditions
Informational messages
Debug-level messages
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Chapter 4 Application
4.1 Network Requirements
The company has established the server farms in the headquarters to provide the Web, Mail and FTP
services for all the staff in the headquarters and the branch offices, and to transmit the commercial
confidential data to its partners. The dedicated line access service was used by this company, which
costs greatly in network maintain and cable layout. With the business development of the company, it’s
required to establish an effective, safe and stable network with low cost for this company. The detailed
requirements are as follows:
Internet Access
This company has terminated the dedicated line access service but maintained one dedicated
line as the backup line, and has applied a high-bandwidth Fiber Access as the main line.
Remote Access
It’s required to build an effective and safe communication among the headquarters and the
branch offices, allow the staff on business to access the Mail Server and FTP Server in LAN,
and provide the remote access services for the cooperated partners.
Network Management
To avoid some of the staff using IM/P2P application at the working time to occupy a lot of
network bandwidth, it’s required to implement the online behavior management and to specify
the network bandwidth limit for each staff member.
Network Security
This enterprise network should be able to defend the common attacks from the internal or the
external network, such as ARP Attack and DoS Attack. Moreover, the real-time monitoring on
the network traffic is required.
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4.2 Network Topology
4.3 Configurations
You can configure the router via the PC connected to the LAN port of this router. To log in to the router,
the IP address of your PC should be in the same subnet of the LAN port of this router. (The default
subnet of LAN port is 192.168.0.0/24.). The IP address of your PC can be obtained automatically or
configured manually.
To access the configuration utility, open a web-browser and type in the default address
http://192.168.0.1 in the address field of the browser, then press the Enter key. In the login window,
enter admin for the User Name and Password, both in lower case letters. Then click the <Login>
button to log into the router.
Tips:
If the LAN IP address is changed, you must use the new IP address to log into the router.
4.3.1 Internet Setting
You can connect the Fiber Optic Modem and the dedicated line to the WAN1 port and the WAN2 port
separately. Suppose both the two connections are the Static IP connections. The Line Backup function
enables you to set the connection of WAN1 as the main line and the connection of WAN2 as the
backup line, which allows the router to switch to the connection of WAN2 once the connection of
WAN1 is broken down. The detailed configurations are as follows.
4.3.1.1
System Mode
Set the system mode of the router to the NAT mode.
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Choose the menu Network→System Mode to load the following page. Select the NAT mode and the
<Save> button to apply.
Figure 4-1 System Mode
4.3.1.2
Internet Connection
Configure the Static IP connection type for the WAN1 and WAN2 ports of the router.
Choose the menu Network→WAN→WAN1 to load the following page. Select the Static IP connection
type and enter the IP address, Subnet Mask and Default Gateway provided by your ISP. Set both
the Upstream Bandwidth and the Downstream Bandwidth to 100000Kbps.The
Upstream/Downstream Bandwidth of WAN port you set must not be more than the bandwidth provided
by ISP. Otherwise the Traffic Control will be invalid. Then click the <Save> button to apply. The
configuration for the WAN2 port is the same as the WAN1.
Figure 4-2 WAN – Static IP
4.3.1.3
Link Backup
Set the connection of WAN1 as the primary link, the connection of WAN 2 as the secondary link.
Choose the menu Advanced→Load Balance→Link Backup to load the configuration page. Select
then click the <Add> button to apply.
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Figure 4-3 Link Backup
4.3.2 VPN Setting
To enable the hosts in the remote branch office (WAN: 116.31.85.133, LAN: 172.31.10.1) to access the
servers in the headquarters, you can create the VPN tunnel via the TP-LINK VPN routers between the
headquarters and the remote branch office to guarantee a secured communication. The following
takes IPsec settings of the router in the headquarters for example.
Moreover, you can configure the PPTP VPN Server to establish a remote mobile office, which enables
the staff on business to access the FTP server and Mail server in the headquarters via PPTP dial-up
connection.
4.3.2.1
IPsec VPN
1)
To configure the IKE function, you should create an IKE Proposal firstly.
IKE Proposal
IKE Setting
Choose the menu VPN→IKE→IKE Proposal to load the configuration page.
Settings:
Proposal Name:
Authentication:
Encryption:
proposal_IKE_1
MD5
3DES
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DH Group:
DH2
Click the <Add> button to apply.
Figure 4-4 IKE Proposal
IKE Policy
Choose the menu VPN→IKE→IKE Policy to load the configuration page.
Settings:
Policy Name:
Exchange Mode:
IKE Proposal:
Pre-shared Key:
SA Lifetime:
DPD:
IKE_1
Main
proposal_IKE_1 (you just created)
aabbccddee
3600
Enable
10
DPD Interval:
Click the <Add> button to apply.
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Figure 4-5 IKE Policy
Tips:
For the VPN router in the remote branch office, the IKE settings should be the same as the router in
the headquarters.
2)
To configure the IPsec function, you should create an IPsec Proposal firstly.
IPsec Proposal
IPsec Setting
Choose the menu VPN→IPsec→IPsec Proposal to load the following page.
Settings:
Proposal Name:
Security Protocol:
ESP Authentication:
ESP Encryption:
proposal_IPsec_1
ESP
MD5
3DES
Click the <Save> button to apply.
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Figure 4-6 IPsec Proposal
IPsec Policy
Choose the menu VPN→IPsec→IPsec Policy to load the configuration page.
Settings:
IPsec:
Enable
Policy Name:
Status:
IPsec_1
Activate
Mode
LAN-to-LAN
Local Subnet:
Remote Subnet:
WAN:
192.168.0.0/24
172.31.10.0/24
WAN1
Remote Gateway:
Exchange Mode
IKE Policy:
IPsec Proposal:
PFS:
116.31.85.133
IKE
IKE_1
proposal_IPsec_1 (you just created)
DH1
SA Lifetime:
3600
Click the <Add> button to add the new entry to the list and click the <Save> button to apply.
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Figure 4-7 IPsec Policy
Tips:
For the VPN router in the remote branch office, the IPsec settings should be consistent with the router
in the headquarters. The Remote Gateway of the remote router should be set to the IP address of the
router in the headquarters.
After the IPsec VPN tunnel of the two peers is established successfully, you can view the connection
information on the VPN→IPsec→IPsec SA page.
Figure 4-8 List of IPsec SA
4.3.2.2
PPTP VPN Setting
IP Address Pool
Choose the menu VPN→L2TP/PPTP→IP Address Pool to load the following page. Enter the Pool
Name and the IP Address Range as the following figure shown. Click the <Add> button to apply.
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L2TP/PPTP Tunnel
Choose the menu VPN→L2TP/PPTP→L2TP/PPTP Tunnel to load the following page. Check the box
of Enable VPN-to-Internet to allow the PPTP clients to access the local enterprise network and the
Internet. Then continue with the following settings for the PPTP Tunnel.
Settings:
L2TP/PPTP:
Protocol:
Enable
PPTP
Mode:
Server
Account Name:
Password:
Tunnel:
PPTP
abcdefg
Client-to-LAN
IP Pool:
PPTP_Dialup_User (you just created)
Click the <Add> button to add the new entry to the list and click the <Save> button to apply.
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4.3.3 Network Management
To manage the enterprise network effectively and forbid the Hosts within the IP range of
192.168.0.30-192.168.0.50 to use IM/P2P application, you can set up a User Group and specify the
network bandwidth limit and session limit for this group. The detailed configurations are as follows.
4.3.3.1
User Group
Create a User Group with all the Hosts in the IP range of 192.168.0.30-192.168.0.50 as its group
members.
Group
Choose the menu User Group→Group to load the following page. Enter the Group Name and the
Description to create a Group as the following figure shows.
Figure 4-9 Group Config
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User
Choose the menu User Group→User to load the configuration page. Click the <Batch> button to
enter the batch processing screen. Then continue with the following settings:
Settings:
Action:
Add
Start IP Address:
End IP Address:
Prefix Username:
Start No.:
192.168.0.30
192.168.0.50
User
1
1
Step:
Click the OK button to add the Users in bulk.
Figure 4-10 User Config - Batch
View
Choose the menu User Group→View to load the configuration page. Add all the Users you just
created into the Group 1 and click the <Save> button to apply.
4.3.3.2
App Control
Choose the menu Firewall→App Control→Control Rules to load the configuration page. Check the
box before Enable Application Control and click <Save> to apply. Then continue with the following
settings:
Settings:
Object:
Group:
Group
group1
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Application: Click the <Application List> button and select the applications desired to be blocked on
the popup window.
Status:
Activate
Figure 4-11 App Rules
4.3.3.3
Bandwidth Control
To enable Bandwidth Control, you should configure the total bandwidth of interfaces and the detailed
bandwidth control rule first.
1)
Enable Bandwidth Control
Choose the menu Advanced→Traffic Control→Setup to load the configuration page. Check the box
before Enable Bandwidth Control and click the <Save> button to apply.
Figure 4-12 Bandwidth Setup
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2)
Interface Bandwidth
Choose the menu Network→WAN→WAN1 to load the configuration page. Configure the Upstream
Bandwidth and Downstream Bandwidth of the interface as Figure 4-13 shows. The entered
bandwidth value should be consistent with the actual bandwidth value.
3)
Bandwidth Control Rule
Choose the menu Advanced→Traffic Control→Bandwidth Control to load the configuration page.
Then continue with the following settings:
Settings:
Direction:
LAN -> WAN1
group1
Group:
Mode:
Individual
100
Guaranteed Bandwidth (Up/Down):
Limited Bandwidth (Up/Down):
Effective Time:
800
Keep the default value
Activate
Status:
Click the <Add> button to apply.
Figure 4-14 Bandwidth Control Rule
4.3.3.4
Session Limit
Choose the menu Advanced→Session Limit→Session Limit to load the configuration page. Check
the box before Enable Session Limit and click the <Save> button to apply. Then continue with the
following settings:
Settings:
Group:
group1
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Max. Sessions:
Status:
250
Activate
Click the <Add> button to apply.
Figure 4-15 Session Limit
4.3.4 Network Security
You can enable the IP-MAC Binding function to defend the ARP attack from local or public network and
enable Sending GARP packets function to defend ARP attack. Moreover, you can enable DoS
Defense function to implement flood defense and Packet Anomaly Defense. Moreover, you can enable
Port Mirror function and Statistics function to monitor the real-time traffic of the local network.
4.3.4.1
LAN ARP Defense
You can configure IP-MAC Binding manually or by ARP Scanning. For the first time configuration,
please bind most of the ARP information by ARP Scanning. For some special items not bound, you
can bind them manually.
1)
Scan and import the entries to ARP List
Specify ARP Scanning range.
Choose the menu Firewall→Anti ARP Spoofing→ARP Scanning to load the configuration page. No
ARP attack in the local network is the premise of ARP Scanning.
Figure 4-16 ARP Scanning
Turn on all the hosts that need to be bound. Then click the <Scan> button, the scanning result will
display as below.
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Figure 4-17 Scanning Result
Choose the menu Firewall→Anti ARP Spoofing→IP-MAC Binding to load the configuration page.
Select the ARP entries needed to be bound or click the <Select All> button, and then click the
<Import>button. The ARP List will display as the following figure shows.
Figure 4-18 ARP List
2)
Set IP-MAC Binding Entry Manually
Configure the IP-MAC Binding entry manually and add it to ARP List.
Choose the menu Firewall→Anti ARP Spoofing→IP-MAC Binding to load the configuration page.
To add the host with IP address of 192.168.1.20 and MAC address of 00-11-22-33-44-aa to the list,
you can follow the settings below:
Settings:
IP Address:
MAC Address:
Status:
192.168.0.20
00-11-22-33-44-aa
Activate
Click the <Add> button to apply. The other entries can be added in the same way.
3) Set Attack Defense
Choose the menu Firewall→Anti ARP Spoofing→IP-MAC Binding to load the configuration page.
Select all the items for General and set the GARP packets sending interval to be 1ms as the following
figure shows. Then click the <Save> button to apply.
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Figure 4-19 IP-MAC Binding
4.3.4.2
WAN ARP Defense
To prevent the WAN ARP attack, you can bind the default gateway and IP address of WAN port.
Obtain the MAC address of WAN port by ARP Scanning first.
Choose the menu Firewall→Anti ARP Spoofing→ARP Scanning to load the configuration page.
Enter the default gateway of the WAN port such as 58.51.128.254 in the Scanning Range field and
click the <Scan> button, the MAC address of the WAN port will display in the Scanning Result table.
After obtaining the MAC address of WAN port from Scanning Result table, select this entry, then click
the <Import> button to finish the binding operation.
4.3.4.3
Attack Defense
Choose the menu Firewall→Attack Defense→Attack Defense to load the configuration page. Select
the options desired to be enabled as Figure 4-20 shows, and then click the <Save> button.
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Figure 4-20 Attack Defense
4.3.4.4
Traffic Monitoring
1)
Port Mirror
Choose the menu Network→Switch→Port Mirror to load the configuration page. Check the box
before Enable Port Mirror and select the Ingress&Egress mode. Select the Port 5 for the Mirroring
Port and the Port 3 and the Port 4 for the Mirrored ports. Click the <Save> button to apply.
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Figure 4-21 Port Mirror
2)
Statistics
Choose the menu Maintenance→Statistics to load the page.
Load the Interface Traffic Statistics page to view the traffic statistics of each physical interface of the
Figure 4-22 Interface Traffic Statistics
Load the IP Traffic Statistics page, and Check the box before Enable IP Traffic Statistics and
Enable Auto-refresh, then click the <Save> button to apply. Select the data direction, the
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Chapter 5 CLI
TL-ER6120 provides a Console port for CLI (Command Line Interface) configuration, which enables
you to configure the router by accessing the CLI from console (such as Hyper Terminal) or Telnet.
The following part will introduce the steps to access CLI via Hyper Terminal and some common CLI
commands.
5.1 Configuration
To log on to the router by the console port on the router, please take the following steps:
1. Connect the PCs or Terminals to the console port on the router by the provided cable.
2. Click Start → All Programs → Accessories→ Communications → Hyper Terminal to open the
Figure 5-1 Open Hyper Terminal
Name field and click OK.
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7. The DOS prompting “TP-LINK>” will appear after pressing the Enter button in the Hyper Terminal
Figure 5-6 Log in the Router
5.2 Interface Mode
The CLI of TL-ER6120 offers two command modes: User EXEC Mode and Privileged EXEC Mode.
User EXEC Mode only allows users to do some simple operations such as view the system
information, while Privileged EXEC Mode allows you to manage and configure the router. Thus
different users have different privileges management.
User EXEC Mode: users should type the user name and password of the router (the factory default
value for both of them is admin) when logging in the router by Telnet. No password is needed when
connecting the console port with the router. Then the users get the privilege to the User level and can
do some simple operations but cannot modify the router’s configurations.
Privileged EXEC Mode: Users can enter Privileged EXEC mode from User EXEC mode by password
authentication. Then the users get the privilege to the User level and can do any configurations to the
router.
The CLI users are in User EXEC Mode by default and free to switch between User EXEC Mode and
Privileged EXEC Mode. The following table gives detailed information about the Accessing Path,
Prompt of each mode and how to exit the current mode and access the next mode.
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Mode
Accessing Path
Prompt
Logout or Access the next
mode
User EXEC Primary mode once it is TP-LINK >
Use the exit command to disconnect
the router (except that the router is
connected through the Console
port).
Mode
connected with the router.
Use the enable command to access
Privileged EXEC mode.
Privileged
EXEC
TP-LINK #
Use the enable command to
enter this mode from User EXEC
mode, the original password is
admin.
Use the exit command to disconnect
the switch (except that the switch is
connected through the Console
port).
Mode
Enter the disable command to return
to User EXEC mode.
Figure 5-7 Interface Mode
5.3 Online Help
TL-ER6120 possesses CLI Online Help:
1) Type a question mark to get all commands of this view and their brief description in either mode.
TP-LINK > ←Type ?
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disable
enable
exit
- Exit the privileged mode
- Enter the privileged mode
- Exit the CLI (only for telnet)
- Show command history
history
ip
- Display or Set the IP configuration
- Display or Set the IP mac bind configuration
- System manager
ip-mac
sys
user
- User configuration
2) Type a command and a question mark separated by space. If there are keywords in this command,
all the keywords and their brief descriptions will display. For example:
TP-LINK > ip ←Press Space and ? button
get
- Get the ip configuration
3) Type a character string and a question mark with no space, all the commands with prefix of this
character string will be listed. For example:
TP-LINK > dis←Press ? button
disable
4) Type the first few letters of certain keywords for a command and press the Tab button, and the
entire keyword will display if the keyword with the typed letters as beginning is unique. For
example:
TP-LINK > dis←Press Tab button
disable
5) Type a command and a question mark separated by space, then a carriage return will display,
indicating that this command can be executed.
TP-LINK # enable ←Press Space and ? button
<cr>
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5.4 Command Introduction
TL-ER6120 provides a number of CLI commands for users to manage the router and user information.
For better understanding, each command is followed by note which is the meaning of the command.
5.4.1 ip
The ip command is used to view or configure the IP address and subnet mask of the interfaces. View
command can be used in both User EXEC Mode and Privileged EXEC Mode while configuration
function can be only used in Privileged EXEC Mode.
TP-LINK > ip get lan
Lan Ip: 192.168.0.1
Lan Mask: 255.255.255.0
Get the configuration
information of LAN port.
TP-LINK # ip set lan address 192.168.0.20
Set the LAN IP address of the
router as 192.168.0.20.
Displaying Operation
succeeded! indicates the
operation is successful. It will
be prompted if an error
occurs.
TP-LINK # ip set lan mask 255.255.0.0
Set the LAN subnet mask of
the router as 255.255.0.0.
5.4.2 ip-mac
The ip-mac command is used to view or configure the current IP-MAC Binding mode. View command
can be used in both User EXEC Mode and Privileged EXEC Mode while configuration function can be
only used in Privileged EXEC Mode. The IP-MAC Binding mode includes two types: normal mode and
restrict mode.
TP-LINK > ip-mac get mode
Get the current IP-MAC
binding mode.
Ip-mac Bind Mode: normal
TP-LINK # ip-mac set mode restrict
Set the current IP-MAC
binding mode to restrict
mode.
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5.4.3 sys
The sys command is used for system management, including Backup and Restore, Factory Default,
Reboot, Firmware Upgrade and so on.
TP-LINK # sys reboot
Reboot the system. Y means
YES, N means NO.
This command will reboot system, Continue?[Y/N]
TP-LINK # sys restore
Restore to factory default. Y
means YES, N means NO.
Thiscommandwillrestoresystem, Continue?[Y/N]
TP-LINK # sys export config
Server address: [192.168.1.101]192.168.1.100
Username: [admin]ftp
Export the configuration file.
Example: There is a FTP
server with IP address of
192.168.1.100 and both the
user name and password of
which is ftp. To save the
current configuration file with
Password: [admin]ftp
File name: [config.bin]
the
default
name
as
config.bin to this FTP server,
follow the configuration on
the left.
Try to save the configuration file < config.bin > ...
Save configuration file < config bin > succeed, file size is 7104 bytes.
Note:
●
FTP service is required for importing or exporting configuration files and system upgrade. The
parameter Server address is the IP address of the host to provide FTP service,
Username/Password is the Username/Password to login the FTP service and File name is the
name of the configuration file (change the file name if the configuration file with the same name is
existed).
●
●
The parameters in the brackets are default setting and you can enter the actual parameters
behind them. Press Enter key directly if there are no changes.
TL-ER6120 connects to the FTP server using port 21 by default.
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●
Pay special attention that the specified account must be with appropriate permissions since the
functions such as export, import and firmware upgrade require read-write operation on FTP
server.
TP-LINK # sys import config
Server address: [192.168.1.101]
Username: [admin]
Import the configuration file.
The steps are as the above
item shown.
Password: [admin]
File name: [config.bin]
Try to get the configuration file < config.bin > ...
Get configuration file < config bin > succeed, file size is 7104 bytes.
TP-LINK > sys show
View the system information.
The current CPU usage of
the system will display.
CPU Used Rate:
1%
TP-LINK # sys update
Server address: [192.168.1.101]
Username: [admin]
Upgrade the firmware.
Password: [admin]
File name: [update.bin]
Try to get the update file < update.bin > ...
Get update file < update bin > succeed, file size is 2298608 bytes.
5.4.4 user
The user command is used to query or modify the user name and password of CLI. In User EXEC
Mode, you can only modify the password of the User level users while the username cannot be
modified since the User Level user and Admin Level user share the same username. In Privileged
EXEC Mode, you can modify both the user name and password of Admin-Level user.
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TP-LINK > user get
Username: admin
Password: admin
Query the user name and
password of the current
Guest.
TP-LINK > user set password
Enter old password:
Modify the password of the
Guest.
Enter new password:
Confirm new password:
TP-LINK # user get
Username: admin
Password: admin
Query the user name and
password
of
the
Administrator.
TP-LINK # user set password
Enter old password:
Modify the password of the
Administrator.
Enter new password:
Confirm new password:
TP-LINK # user set username
Modify the user name of the
Administrator.
Enter new username: tplink
Note:
The new user name and password must not exceed 31 characters in length and must consist of
numbers or letters. All the fields are case-sensitive.
5.4.5 history
The history command is used for you to view or clear the historical commands.
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TP-LINK > history
1. history
View the history command.
2. sys show
3. history
TP-LINK > history clear
1. history
Clear the history command.
2. sys show
3. history
4. history clear
5.4.6 exit
The exit command is used to exit the system when logging in by Telnet.
TP-LINK > exit
Exit CLI.
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Appendix A Hardware Specifications
IEEE 802.3, IEEE 802.3u, IEEE 802.3ab, IEEE 802.3x, TCP/IP, DHCP,
Standards
ICMP, NAT、PPPoE, SNTP, HTTP, DNS, L2TP, PPTP, IPsec
Two 10/100/1000M Auto-Negotiation WAN RJ45 port (Auto MDI/MDIX)
Two 10/100/1000M Auto-Negotiation LAN RJ45 ports (Auto MDI/MDIX)
One 10/100/1000M Auto-Negotiation LAN/DMZ RJ45 port (Auto MDI/MDIX)
One Console Port
Ports
10Base-T: UTP/STP of Cat.3 or above(≤100m)
100Base-TX: UTP/STP of Cat.5 or above(≤100m)
1000Base-T: UTP/STP of Cat.5e or above (≤100m)
PWR, SYS, Link/Act, Speed, DMZ
Transmission Medium
LEDs
100-240V~ 50/60Hz 0.6A
Power
Operating Temperature: 0ºC ~ 40ºC
Storage Temperature: -40ºC ~ 70ºC
Operating Environment
Operating Humidity: 10% ~ 90%RH Non-condensing
Storage Humidity: 5% ~ 90%RH Non-condensing
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Appendix BFAQ
Q1. What can I do if I cannot access the web-based configuration page?
1. For the first login, please try the following steps:
1) Make sure the cable is well connected to the LAN port of the router. The corresponding LED
should flash or be solid light.
2) Make sure the IP address of your PC is set in the same subnet addresses of the router. It’s
recommended to set your PC to get the IP address automatically. Then the router with DHCP
enabled can automatically assign the IP address to your PC. If you want to configure your PC
manually, please set 192.168.0.x ("x" is any number between 2 to 254) for the IP address and
255.255.255.0 for the Subnet Mask.
3) Test the connection between your PC and TL-ER6120 via Ping command.
4) If you still cannot access the configuration page, please restore your router to its factory default
settings and try to log in again.
2. If your management port has been changed, please log into the router with the new address, such
3. If you had successfully logged into the router before, but now you cannot access the router. It’s
quite possible that the configuration of your router has been changed by others, especially when
the Remote Web Management function is enabled. You’re recommended to restore your router
and reconfigure the management port number and the username as well as the password for your
network security.
4. If you cannot access the router even after restoring the router to its defaults, or your login is
dropped down just after a while, it’s quite possible that your router is attacked by ARP cheating.
It’s recommended to locate and quarantine the source of ARP cheating so as to prevent your
network from the attacks.
5. Check to see if you have configured the proxy server for IE browser. If so, please disable the IE
proxy server first.
Q2: What can I do if I forgot the username and the password of the router? How to restore the
router to its factory default settings?
You can restore the router to its factory default settings by the Reset button. It must be noted that once
the router is reset, all the current configuration settings will be lost.
With the router powered on, use a pin to press and hold the Reset button for about 5~10 seconds.
After the M1 LED is solid light for 2~5 seconds, release the Reset button. When the M1 and M2 LEDs
flash simultaneously for about one second, the router is restored successfully. The default
management address of the router is http://192.168.0.1, and the default username and the password
are both admin.
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Q3: What can I do if the router with the remote management function enabled cannot be
accessed by the remote computer?
1. Make sure that the IP address of the remote computer is in the subnet allowed to remotely access
the router.
2. If the router’s management port has been modified, please log into the router with the new
address, such as http://192.168.0.1:XX (“XX” is the new management port number).
3. Check to see if the management port has been mapped to the service port of the LAN host in the
Virtual Server function. If so, you should change the router’s management port or virtual server’s
service port.
4. Make sure that the NAT DMZ service is disabled.
Q4: Some functions of the router need to define the IP address subnet with Subnet Mask. What
are the common values of the Subnet Mask?
Subnet Mask is a 32-bit binary address used for distinguishing the network address and the host
address. When dividing the network, the different Subnet Mask defines different subnet, and the
amount of hosts in each subnet is different.
After conversed from 32-bit binary address to decimal address, the common Subnet Mask values can
be 8 (which represents the default Subnet Mask value of class A: 255.0.0.0), 16 (which represents the
default Subnet Mask value of class B: 255.255.0.0), 24 (which represents the default Subnet Mask
value of class C: 255.255.255.0) or 32 (which represents the default Subnet Mask value of class D:
255.255.255.255).
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Appendix CGlossary
Glossary
Description
Application Level Gateway (ALG) is application specific
translation agent that allows an application on a host in one
address realm to connect to its counterpart running on a host in
different realm transparently.
ALG （ Application Layer
Gateway）
ARP（Address Resolution
A
Internet protocol used to map an IP address to a MAC address.
A security protocol that provides data authentication and
Protocol）
AH（Authentication Header）optional anti-replay services. AH is embedded in the data to be
protected (a full IP datagram).
The capability of assigning a fixed host and domain name to a
dynamic Internet IP address.
DDNS （ Dynamic Domain
Name Server）
A protocol that automatically configure the TCP/IP parameters
for the all the PCs that are connected to a DHCP server.
DHCP （ Dynamic Host
Configuration Protocol）
A Demilitarized Zone allows one local host to be exposed to the
D
DMZ（Demilitarized Zone） Internet for a special-purpose service such as Internet gaming
or videoconferencing.
An Internet Server that translates the names of websites into IP
addresses.
DNS（Domain Name
Server）
A technology that allows data to be sent or received over
existing traditional phone lines.
DSL (Digital Subscriber
Line)
Security protocol that provides data privacy services, optional
data authentication, and anti-replay services. ESP encapsulates
the data to be protected.
ESP（Encapsulating
E
F
Security Payload）
FTP（File Transfer
Application protocol, part of the TCP/IP protocol stack, used for
transferring files between network nodes.
Protocol）
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Description
H.323 allows dissimilar communication devices to communicate
with each other by using a standardized communication
protocol. H.323 defines a common set of CODECs, call setup
and negotiating procedures, and basic data transport methods.
H.323
H
The protocol used by Web browsers and Web servers to
transfer files, such as text and graphic files.
HTTP（Hypertext Transfer
Protocol）
Network layer Internet protocol that reports errors and provides
other information relevant to IP packet processing.
ICMP（Internet Control
Messages Protocol）
Largest global Internetwork, connecting tens of thousands of
networks worldwide and having a “culture” that focuses on
research and standardization based on real-life use.
Internet
Network layer protocol in the TCP/IP stack offering a
connectionless Internetwork service. IP provides features for
addressing, type-of-service specification, fragmentation and
reassembly, and security.
IP（Internet Protocol）
I
ISP（Internet Service
Company that provides Internet access to other companies and
individuals.
Provider）
IKE establishes a shared security policy and authenticates keys
for services (such as IPSec) that require keys. Before any IPSec
traffic can be passed, each router/firewall/host must verify the
identity of its peer.
IKE （Internet Key
Exchange）
A
framework of open standards that provides data
IPsec（IP Security）
confidentiality, data integrity, and data authentication between
participating peers.
High-speed, low-error data network covering a relatively small
geographic area (up to a few thousand meters). LANs connect
workstations, peripherals, terminals, and other devices in a
single building or other geographically limited area.
L
LAN（Local Area Network）
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Glossary
Description
Standardized data link layer address that is required for every
port or device that connects to a LAN. Other devices in the
network use these addresses to locate specific ports in the
MAC address（Media
Access Control address） network and to create and update routing tables and data
structures. MAC addresses are 6 bytes long and are controlled
by the IEEE.
M
MTU（Maximum
The size in bytes of the largest packet that can be transmitted.
Transmission Unit）
Mechanism for reducing the need for globally unique IP
NAT（Network Address
addresses. NAT allows an organization with addresses that are
not globally unique to connect to the Internet by translating
those addresses into globally routable address space.
Translator）
N
NTP Server is used for synchronising the time across computer
networks.
NTP Server
POP3（Post Office Protocol POP3 is intended to permit a workstation to dynamically access
3）
a maildrop on a server host in a useful fashion.
P
PPPoE（Point-to-Point
PPPoE is a network protocol for encapsulating Point-to-Point
Protocol (PPP) frames inside Ethernet frames.
Protocol over Ethernet）
SMTP（Simple Mail
SMTP is an Internet standard for electronic mail (e-mail)
transmission
Transfer Protocol）
SSH（Secure Shell
SSH is a network protocol that allows data to be exchanged
using a secure channel between two networked devices.
S
Protocol）
SA is the establishment of shared security attributes between
two network entities to support secure communication.
SA （Security Association）
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Glossary
Description
TCP（Transfer Control
Connection-oriented transport layer protocol that provides
reliable full-duplex data transmission.
Protocol）
TCP/IP（Transmission
Control Protocol/ Internet
Protocol）
Common name for the suite of protocols to support the
construction of worldwide Internet works. TCP and IP are the
two best-known protocols in the suite.
T
Telnet is used for remote terminal connection, enabling users to
log in to remote systems and use resources as if they were
connected to a local system.
Telnet（Telecommunication
Network protocol）
UDP is a simple protocol that exchanges datagram without
acknowledgments or guaranteed delivery, requiring that error
processing and retransmission be handled by other protocols.
UDP（User Datagram
Protocol）
UPnP is a set of networking protocols for primarily residential
networks without enterprise class devices that permits
networked devices.
UPnP（Universal Plug and
U
Play）
URL（Uniform Resource
URL describes the access method and the location of an
information resource object on the Internet
Locator）
Group of devices on one or more LANs that are configured
(using management software) so that they can communicate as
VLAN（Virtual Local Area if they were attached to the same wire, when in fact they are
Network）
located on a number of different LAN segments. Because
VLANs are based on logical instead of physical connections,
they are extremely flexible.
V
Enables IP traffic to travel securely over a public TCP/IP
network by encrypting all traffic from one network to another.
VPN （Virtual Private
Network）
Data communications network that serves users across a broad
geographic area and often uses transmission devices provided
by common carriers.
W
WAN（Wide Area Network）
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