N450 WiFi Cable Modem Router
Model N450/CG3000Dv2
User Manual
January 2014
202-11338-01
350 East Plumeria Drive
San Jose, CA 95134
USA
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Contents
Back Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Label. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Position Your Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Connect Computer to the Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Wired Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
WiFi Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Log In to Your Modem Router . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
View Basic Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Configure Wireless Settings Manually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Enable or Disable Modem Router Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Back Up and Restore Your Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
View the Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
Run the Diagnostic Utilities. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Ping Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
Traceroute Utility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
MAC Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
TableofContents | 3
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Port Triggering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
LAN IP Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Configure Universal Plug and Play . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Set Networking Protocols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
Enable Network Address Translation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Basic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Factory Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
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1.
Connecting to the Internet
1
This chapter covers the following sections:
•
•
•
•
•
•
•
•
•
For more information about the topics covered in this manual, visit the support website at
Firmware updates with new features and bug fixes are made available from time to time on
downloadcenter.netgear.com. Some products can regularly check the site and download new
firmware, or you can check for and download new firmware manually. If the features or behavior
of your product do not match what is described in this guide, you might need to update your
firmware.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Unpack Your Modem Router
Open the box and remove the modem router, ethernet cable, power adapter, and installation
guide,
Ethernet cable
Power adapter
Modem router
Figure 1. Package contents
You box contains the following items:
•
•
•
•
N450/CG3000Dv2 WiFi Cable Modem Router
Ethernet cable
AC power adapter (varies by region)
Installation guide
Hardware Features
Before you cable your router, take a moment to become familiar with the front and back
panels. Pay particular attention to the LEDs on the front panel.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Front Panel
The router front panel has the following status LEDs and buttons:
WPS LED
Wireless LED
USB port
Power LED
Downstream LED
Upstream LED
Internet LED
LAN LEDs
Figure 2. Modem router front view
You can use the LEDs to verify status and connections. The following table lists and describes
each LED and button on the front panel of the modem router.
Table 1. LEDs and buttons
LED
Description
•
•
•
Solid green. The modem router has power.
Blinking green. The modem router is powering on.
Blinking red. The modem router is performing a self-test or the thermal cutoff circuit has
been triggered.
Power
•
Off. The modem router is not receiving power.
•
•
•
•
Solid blue. More than one downstream channel is locked.
Solid green. One downstream channel is locked.
Blinking green. The modem router is scanning for a downstream channel.
Off. No downstream channel is locked.
Downstream
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Table 1. LEDs and buttons
LED
Description
•
•
•
•
Solid blue. More than one upstream channel is locked.
Solid green. One upstream channel is locked.
Blinking green. The unit is ranging on the upstream.
Off. No downstream channel is locked.
Upstream
•
•
•
•
Solid green. The modem router is connected to the Internet.
Slow blink. The modem router is receiving DHCP information.
Fast blink. The modem router is downloading the configuration file.
Off. The modem router is not connected to the Internet.
Internet
Green indicates 1,000/100 Mbps. Amber indicates 10 Mbps.
•
•
•
Solid. A power-on device is connected to the LAN port.
Blinking. The LAN port is transmitting or receiving data.
Off. No device is connected to a LAN port.
LAN
Pressing this button for three seconds turns on the wireless radio.
•
•
•
Solid green. The wireless radio is operating.
Blinking green. Data is being transmitted or received over the WiFi link.
Off. The wireless radio is off.
Wireless
On/Off
Pressing this button opens a two-minute window for the modem router to connect with other
WPS-enabled devices. For more information, about using the WPS method to implement
WPS
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Back Panel
The back panel has the following ports, button, and connector:
LAN ports
USB port
Reset button
Coaxial cable connector
Power adapter input
Figure 3. Modem router rear panel
The rear panel includes the following connectors and button, viewed from top to bottom:
•
•
•
Four Gigabit LAN ports. To connect local computers, use these ports.
USB port. To connect a USB hard drive, flash drive, or printer, use this port.
Reset. To set the modem router to the original factory settings, press and hold the Reset
•
•
Coaxial cable connector. Attach a coaxial cable to the cable service provider’s
connection.
Power. Power adapter input.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Label
The label on the modem router shows the router’s WiFi network name (SSID), password,
serial number, and MAC address.
Serial number
MAC address
WiFi network name (SSID)
Password (key)
Figure 4. Label
For information about the Restore Factory Settings button and the factory setting values, see
Position Your Modem Router
The modem router lets you access your network anywhere within the operating range of your
wireless network. However, the operating distance or range of your wireless connection can
vary significantly depending on the physical placement of your modem router. For example,
the thickness and number of walls the wireless signal passes through can limit the range.
Additionally, other wireless access points in and around your home might affect your modem
router’s signal. Wireless access points are modem routers, repeaters, WiFi range extenders,
or any other device that emits a wireless signal for network access.
To position your modem router:
1. Place your modem router near the center of the area where your computers and other
devices operate, and within line of sight to your wireless devices.
2. Make sure that the modem router is within reach of an AC power outlet and near Ethernet
cables for wired computers.
3. Place the modem router in an elevated location, minimizing the number walls and ceilings
between the modem router and your other devices.
4. Place the modem router away from electrical devices such as these:
•
Ceiling fans
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
•
•
•
•
•
Home security systems
Microwaves
Computers
Base of a cordless phone
2.4 GHz cordless phone
5. Place the modem router away from large metal surfaces, large glass surfaces, and insulated
walls such as these:
•
•
•
•
•
•
Solid metal door
Aluminum studs
Fish tanks
Mirrors
Brick
Concrete
Cable Your Modem Router
The following figure shows how to cable your modem router:
Computer
Outlet
Power adapter
Modem router
Figure 5. Cable your modem router
To cable your modem router:
6. Connect the cable port on the modem router to your cable line splitter or outlet.
Use the coaxial cable from your cable company.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Note: If Charter is your cable Internet service provider, Charter recommends
connecting your modem router directly to an outlet. If you must use a
splitter, use a splitter that is rated at 3.5 dBmv.
7. Connect the power adapter to the modem router.
8. Plug the other end of the power adapter into an electrical outlet.
9. Wait about 50 seconds for the modem router to start.
The Internet LED blinks, then turns solid green, indicating that a link was established to
the cable network.
10. Connect a computer or WiFi device to the modem router.
Connect Computer to the Modem Router
You can connect your computer or mobile device (such as a smartphone or gaming device)
to the modem router’s WiFi network through a wired or WiFi connection.
Wired Connection
You can connect your computer to the modem router using an Ethernet cable and join the
modem router’s local area network (LAN).
To connect your computer to the modem router with an Ethernet cable:
1. Make sure that the modem router has power (its Power LED is lit).
2. Connect an Ethernet cable to a LAN port on your computer.
3. Connect the other end of the Ethernet cable to one of the numbered LAN ports.
Your computer connects to the local area network (LAN). A message might display on
your computer screen to notify you that an Ethernet cable is connected.
WiFi Connection
You can connect to the modem router’s WiFi network with Wi-Fi Protected Setup (WPS) or
you can find and select the WiFi network.
To use WPS to connect to the WiFi network:
1. Make sure that the modem router has power (its Power LED is lit).
2. Check the WPS instructions for your computer or mobile device.
3. Press the WPS button on the modem router.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
4. Within two minutes, on your computer or mobile device, press its WPS button or follow its
instructions for WPS connections.
Your computer or mobile device connects to the WiFi network.
To find and select the WiFi network:
1. Make sure that the modem router has power (its Power LED is lit).
2. On your computer or mobile device, find and select the WiFi network.
The WiFi network name is on the modem router’s label.
3. Join the WiFi network and enter the WiFi password.
The password is on the modem router’s label.
Your computer or mobile device connects to the WiFi network.
Log In to Your Modem Router
Log in to the modem router to view or change its settings.
Note: To connect to the modem router, use a computer configured for
DHCP (most computers are). For help with configuring DHCP, see the
instructions that came with your computer.
If you do not click the Logout button, when you have logged in, the modem router waits for
activity for five minutes before it automatically logs you out.
To log in to the modem router:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
The modem router main menu displays.
View Basic Settings
You can view or change the Internet settings for the modem router.
To view or configure basic settings:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
3. From the main menu, select Basic Settings.
The Basic Settings screen displays:
4. If your Internet service provider requires a domain name, enter the domain name in the
Domain Name field.
5. Enter the device name in the Device Name field.
This name is a user-friendly name representing the modem router in the network
computers running Windows Vista and the Network Explorer on all other Windows
computers.
6. Click the Apply button.
Your changes are saved.
Notify Your Internet Service Provider
You must contact your Internet service provider (ISP) and tell them that you are using the
modem router.
1. Contact your cable ISP and inform them that you are installing a new modem router that
you bought from a retail store.
Provide your cable ISP with the modem router’s model number, which is CG3000Dv2.
Note: The modem router is certified by all major cable ISPs.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
You can also visit your cable ISP’s website and follow the onscreen instructions to set up
your Internet service.
Cable ISP
Contact Information
Cablevision
Charter
Comcast
Cox
1-888-438-2427
1-800-COMCAST (1-800-266-2278)
1-877-891-2899
Optimum
http://play.optimum.net
Time Warner Cable
1-800-892-2253
Note: The contact information listed might change. You can also find the
contact number in your monthly Internet service billing statement.
2. When asked, provide the modem router’s serial number and MAC address located on the
product label on the modem router.
3. Wait for your cable ISP to confirm that your modem router is active.
4. If you do not have an Internet connection with the modem router, ask your cable ISP to look
for your modem router online, and do one of the following depending on what your cable ISP
tells you about your modem router:
•
If the modem routeris not visible, your cable ISP can give you instructions to verify
why the modem routerdoes not connect with your high-speed Internet service.
•
If your cable Internet service provider can confirm that the modem router is visible,
reboot the computer that is connected to the modem router. Try checking your online
status again.
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2.
Configuring Your Wireless
Network
2
This chapter covers the following sections:
•
•
•
Note: Before changing wireless settings, connect the modem router and set
up its Internet connection as described in the N450 WiFi Cable
Modem Router N450/CG3000Dv2 Installation Guide.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Set Up Your Wireless Network
To set up the wireless network, you can enter the wireless settings manually, or you can use
Wi-Fi Protected Setup (WPS). To wirelessly connect to the modem router, a computer or
wireless device must be configured with the same wireless settings as the modem router.
Configure Wireless Settings Manually
You can manually configure the wireless settings and security in the Wireless Settings
screen.
To view or configure the wireless settings:
1. Use an Ethernet cable to connect your computer to a LAN port on the modem router.
Note: If you connect wirelessly to the modem router and then change its
wireless network name (SSID) or wireless security, you are
disconnected after you click the Apply button on the Wireless Settings
screen.
A login screen displays.
3. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
4. In the main menu, under Setup, select Wireless Settings.
Configuring Your Wireless Network
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
The following screen displays:
5. Specify the Wireless Network settings for your network:
•
Name (SSID). The name of the wireless network.
The default wireless network name (SSID) for the modem router appears on the label
of the modem router. You can enter a different name here for better wireless security
and to make it easier to recognize your network when you want to connect to it
wirelessly.
•
•
Region. The location where the modem router operates.
Channel. The available channels depend on the region. Some countries have laws
specifying which channels should be used. To reduce interference when using more
than one access point, NETGEAR recommends using five-channel spacing between
adjacent access points (for example, use Channels 1 and 6, or 6 and 11).
•
802.11 Mode. This value is set to Up to 217 Mbps by default. You can specify the
mode to support faster equipment or legacy equipment.
6. Specify the security options:
By default the modem router works with WPA and WPA 2 wireless security. You can
specify the network key, which works like a password to access the wireless network.
a. Set up WPA or WPA2 wireless security. Select one of the following radio buttons:
•
•
WPA-PSK. This setting provides the TKIP encryption type and a pre-shared key.
WPA2-PSK. This setting provides the AES encryption type and a pre-shared key.
Configuring Your Wireless Network
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
Note: Configure your wireless computers with the same WPA2 or WPA
settings as your modem router so that you can connect.
b. Depending on the WPA setting that you select, enter the required information.
For WPA-PSK or WPA2-PSK, enter the pre-shared key, which is a password between
8 and 63 characters. The default WPA password appears on the label of your modem
router.
Note: By default, the modem router is set up to work with WPA and WPA2
wireless security, both of which are newer than WEP. Typically, the
only reason you might need to set up WEP would be to allow access
to older wireless computers or devices that cannot support WPA.
7. Click the Apply button.
Note: If you plan to use WPS, and you want to keep your wireless settings
the same, go to the Advance Wireless Settings screen and make sure
Use WPS Wireless Setup
Wi-Fi Protected Setup (WPS) can be a quick way to automatically set up your modem
router’s wireless network and set up your wireless computer to connect to it at the same time.
WPS is relatively new technology, so before you decide to use it, check to make sure that
your wireless computers and devices support WPS. NETGEAR calls WPS Push 'N' Connect.
Look for the WPS symbol
router. If you do not see the WPS symbol
on all the computers that connect wirelessly to the modem
on all the computers that connect to the
connection for the computers that support WPS.
Note: All WPS-capable products should be compatible with the modem
router. For more information about the WPS standard, visit
Two Push 'N' Connect methods are available, WPS button and PIN (personal identification
number).
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Add a Client Using the WPS Button
Note: The first time you use WPS, it assigns a random network name
(SSID) and a random password to your wireless network. If you want
to keep the network name and password you specified in the Wireless
Settings screen, you must select the Keep Existing Settings check
box in the Advanced Wireless Settings screen. See Advanced
A client is a computer or mobile device that connects wirelessly to the modem router. After a
device is added as a client, it can automatically connect to the modem router.
To add a client to your modem router using the WPS button:
1. Make sure that you know how WPS works on your client.
If it works with WPS, it has a WPS utility and might also have a WPS button that you can
press.
A login screen displays.
3. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
4. In the main menu, select Add WPS Client.
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The following screen displays:
5. Click the Next button.
The following screen displays:
6. Either click the WPS button
on the screen, or press the WPS button
on the front of
the modem router.
The following occurs:
•
•
The WPS LED on the front of the modem router begins to blink.
The modem router tries to communicate with the wireless computer or device for two
minutes.
•
If the security option in the Wireless Settings screen was set to Disable, it is
automatically changed to WPA-PSK [TKIP] + WPA2-PSK [AES], including a random
wireless security password.
7. Go to the computer or mobile device, and run its WPS configuration utility.
8. To click the WPS button, follow the utility’s instructions.
When the computer or mobile device connects to the wireless network, the modem router
sends its SSID and WPA-PSK or WPA2-PSK configuration to that computer.
9. On the computer that just joined the wireless network, make sure that you can connect to
the Internet.
Configuring Your Wireless Network
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
The modem router’s Internet LED blinks, showing that the Internet connection is in use.
Add a Client Using a PIN
A client is a computer or mobile device that connects wirelessly to the modem router. After a
device is added as a client, it can automatically connect to the modem router.
To add a client to your modem router using a PIN:
1. Make sure that you know how WPS works on your computer or mobile device.
If it works with WPS, it has a WPS utility. To determine the PIN for your mobile computer
or device, use this utility.
A login screen displays.
3. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
4. In the main menu, select Add WPS Client.
The following screen displays:
5. Click the Next button.
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
The following screen displays:
6. Select the PIN radio button.
7. In the Enter Client’s PIN field, type the PIN that you located in Step 1.
8. Click the Next button.
The following occurs:
•
•
The WPS LED on the front of the modem router begins to blink.
The modem router tries to communicate with the wireless computer or device for four
minutes.
•
If the security option in the Wireless Settings screen was set to Disable, it is
automatically changed to WPA-PSK (including a PSK security password).
When the computer connects to the wireless network, the modem router sends its SSID
and WPA-PSK or WPA2-PSK configuration to that computer.
9. On the computer that just joined the wireless network, make sure you can connect to the
Internet.
The modem router’s Internet LED blinks, showing that the Internet connection is in use.
Set Up Wi-Fi Multimedia
Wi-Fi Multimedia (WMM) provides basic Quality of Service (QoS) features to IEEE 802.11
networks. WMM prioritizes traffic according to four access categories: voice, video, best
effort, and background. It does not, however, provide guaranteed throughput. You can use
the Wi-Fi Multimedia screen to set up wireless multimedia Quality of Service (QoS).
To set up Wi-Fi Multimedia:
Configuring Your Wireless Network
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Setup, select Wi-Fi Multimedia.
The following screen displays:
4. Specify the Wi-Fi Multimedia setting for the network:
•
•
WMM Support. Select On to enable WMM.
No-Acknowledgement. Select Off if you want to use Acknowledgement (ACK)
messages. Select On if you do not want to use acknowledgement messages.
Usually, Off is selected. If wireless communication quality is poor at your location,
select On so that you are notified when a package is lost. High interference levels can
cause poor communication.
•
Power Save Support. To conserve battery power in smaller devices that are
connected to the modem router, select On.
5. Click the Apply button.
Your changes are saved.
Change the Password
For security reasons, the modem router has its own user name and password. NETGEAR
recommends that you change the default password to a more secure password. The ideal
Configuring Your Wireless Network
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password contains no dictionary words from any language, and is a mixture of both
uppercase and lowercase letters, numbers, and symbols. Passwords can contain up to 30
characters.
To change the password:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select Set Password.
The following screen displays:
4. Enter the new password twice.
5. Click the Apply button.
Your changes are saved.
Note: After changing the password, you are required to log in again to
continue the configuration. If you have backed up the modem router
settings previously, create a new backup so that the saved settings
file includes the updated password.
Configuring Your Wireless Network
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View Denial of Service Attack Logs
A content filter log is a detailed record of the denial of service (DoS) attacks directed at your
network. You can set up email notification or you can view the logs on the modem router.
To view or set up notification of attacks by email:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Logs.
The following screen displays:
4. Enter an email address.
This address is the full email address to which you want the modem router to send logs.
5. Enter the SMTP server name.
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Type the outgoing SMTP mail server of your ISP. If you leave this field blank, the modem
router does not send logs.
6. Select the E-mail Alerts Enable check box.
7. Click the Apply button.
8. Perform any of the following actions:
•
•
•
To refresh the display, click the Refresh button.
To send the log to the contact email address, click the E-mail Log button.
To clear the log entries from the display, click the Clear Log button.
Limit Internet Site Access
You can establish rules to limit access to certain Internet websites in one of two ways:
•
•
Blocking sites that contain certain words (like profanity or explicit sexual material)
Blocking access to certain domains (for example, adultXXXsiteXXX.com)
To block access to sites containing certain words:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Block Sites.
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The following screen displays:
4. Select the Keyword Blocking Enable check box.
5. In the keyword list field, enter the words you want to block.
6. Click the Add Keyword button.
The keyword is added to the Keyword List.
7. Click the Apply button.
Keyword blocking takes effect.
To allow a keyword that was previously blocked:
A login screen displays.
2. Enter the modem router user name and password.
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The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Block Sites.
The Block Sites screen displays.
4. Select a keyword from the keyword list.
5. Click the Remove Keyword button.
The keyword is removed from the list.
6. Click the Apply button.
Your changes are saved.
To block access to certain domains:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Block Sites.
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The following screen displays:
4. Select the Domain Blocking Enable check box.
5. In the domain list field, enter the domain you want to block.
6. Click the Add Domain button.
The domain is added to the Domain List.
7. Click the Apply button.
Domain blocking takes effect.
To unblock a domain:
A login screen displays.
2. Enter the modem router user name and password.
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The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Block Sites.
The Block Sites screen displays.
4. Select a domain name from the Domain List.
5. Click the Remove Domain button.
The domain is removed from the list.
6. Click the Apply button.
Your changes are saved.
Allow Unrestricted Access
You can specify up to three computers to have unrestricted access to the Internet.
To allow unrestricted access:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Block Sites.
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The following screen displays:
4. Select the Allow Trusted Computer to Visit Blocked Sites check box.
5. Enter the MAC address of each computer.
6. Click the Apply button.
Enable or Disable Modem Router Features
You can enable or disable the following types of modem router features:
•
Firewall features
-
-
-
-
-
IPSec PassThrough
PPTP PassThrough
Mulitcast
Port Scan Detection
IP Flood Detection
•
Web features
-
-
-
-
Filter Proxy
Filter Cookies
Filter Java Applets
Filter ActiveX
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-
Filer Popup Windows
•
NAT ALG status features
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RSVP
FTP
TFTP
kerb88
NetBios
IKE
RTSP
Kerb1293
H225
PPTP
MSN
SIP
ICQ
IRC666x
ICQTalk
Net2Phone
IRC7000
To enable or disable specific firewall features:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Services.
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Firewall features appear near the top of the screen.
4. Do one of the following:
•
•
To enable a firewall feature, select the check box next to the feature.
To disable a firewall feature, clear the check box next to the feature.
5. Click the Apply button.
Your changes are saved.
The following table describes the fields displayed in this screen.
Feature
Description
Firewall
•
•
Enable. The modem router performs stateful packet inspection (SPI).
Disable. The modem router does not perform SPI.
IPSec Pass-Through
PPTP Pass-Through
Multicast
•
•
Enable. The modem router forwards IPS traffic.
Disable. The modem router blocks traffic.
•
•
Enable. The modem router forwards PPTP traffic.
Disable. The modem router blocks PPTP traffic.
•
•
Enable. The modem router passes multicasting streams through the
firewall.
Disable. The modem router blocks multicasting streams.
Port Scan Detection
IP Flood Detection
•
•
Enable. The modem router responds to Internet-based port scans.
Disable. The modem router does not respond to Internet-based port scans.
•
•
Enable. The modem router blocks malicious devices that are attempting to
flood devices.
Disable. The modem router does not block malicious devices.
To enable or disable specific web features:
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Services.
Web features appear near the middle of the screen.
4. Do one of the following:
•
•
To enable a web feature, select the check box next to the feature.
To disable a web feature, clear the check box next to the feature.
5. Click the Apply button.
Your changes are saved.
To enable or disable specific NAT ALG Status features:
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Content Filtering, select Services.
NAT ALG Status features appear near the bottom of the screen.
4. Do one of the following:
•
•
To enable a web feature, select the check box next to the feature.
To disable a web feature, clear the check box next to the feature.
5. Click the Apply button.
Your changes are saved.
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View the Modem Router Status
You can view hardware and firmware details and basic status information about the modem
router.
To view the modem router status:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. From the main menu, under Maintenance, select Modem Status.
The following screen displays:
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N450 WiFi Cable Modem Router Model N450/CG3000Dv2
The following table describes the fields displayed in this screen:
Modem Field
Description
Standard Specification
Compliant
DOCSIS 3.0
Hardware Version
Software Version
Cable MAC Address
The hardware version of the modem router.
The version of firmware currently running on the modem router.
The MAC address used by the cable modem port of the modem router. This
MAC address might need to be registered with your cable service provider.
Device MAC Address
The WAN MAC address used by the device.
Cable Modem Serial Number The serial number of the modem router hardware.
CM certificate
If the cable modem certificate is installed, it is possible for the service
provider to upgrade your Data Over Cable service securely.
System Up Time
Time since the last boot-up.
Network Access
Shows whether traffic can be forwarded from the LAN to the network.
Cable Modem IP Address
The current Internet IP address. If assigned dynamically and not connected
to the Internet, this field is blank.
View the Connection Status
You can track the modem router’s initialization procedure, and get details about the
downstream and upstream cable channel. The time appears after the modem router is
initialized.
To view the modem router’s initialization procedure:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
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The modem router main menu displays.
3. In the main menu, under Maintenance, select Connection.
The following screen displays:
The modem router automatically goes through the following steps in the provisioning
process:
•
•
•
•
Scans and locks the downstream frequency and links back in the upstream direction.
Obtains a modem router IP address for the modem router itself.
Assigns an IP address for the connected computer.
Connects to the Internet.
Back Up and Restore Your Settings
The configuration settings of the modem router are stored in a configuration file in the modem
router.
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To back up the settings:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select Backup.
The following screen displays:
4. Click the Back Up button.
If you did not set up your browser to save downloaded files automatically, indicate where
you want to save the file and click the Save button.
If you did set up your browser to save downloaded files automatically, the file is saved to
the browser’s download location on the hard drive.
To restore the backup settings:
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select the Back Up button.
The following screen displays:
4. Click the Browse button.
5. Locate and select the previously saved backup file, then click the Restore button.
A message notifies you when the modem router has been restored to the previous
settings. Then the modem router restarts, which takes about one minute.
Note: When restoring configuration settings, do not interrupt the process by
going online, turning off the modem router, or shutting down the
computer.
View the Event Log
The modem router logs security-related events such as denied incoming service requests
and hacker probes.
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To view or clear the event log:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select Event Log.
The following screen displays:
4. Do one of the following:
•
•
To clear the log, click the Clear Log button.
To refresh the log, click the Refresh button.
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Run the Diagnostic Utilities
You can run ping and traceroute utilities.
Ping Utility
Ping is an administration utility that tests whether a computer on the network is reachable and
measures the time it takes messages sent from the originating device to reach a destination
computer and return.
To run a ping test:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select Diagnostics.
4. From the Utility list, select Ping.
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The following screen displays:
5. Specify the following parameters for the ping utility:
•
•
•
•
Target. The IP address of the ping target computer.
Ping Size. The size of the ping packet.
No. of Pings. The number of times to ping the target computer.
Ping Interval. The time between pings.
6. Click the Start Test button.
The ping results display:
7. To stop a ping test, click the Abort Test button.
To clear the results from the display:
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select the Diagnostics button.
4. Click the Clear Results button.
Traceroute Utility
To display the route and measure transit delays of packets across an IP, run the traceroute
utility.
To run a traceroute test:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select Diagnostics.
4. In the Utility list, select Traceroute.
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The following screen displays:
5. Specify the following parameters for the traceroute utility.
•
•
•
•
•
Target. The IP address or host name of the computer you are tracing.
Max Hops. The maximum number of hops to allow when tracing the route.
Data Size. The input the size of the packet.
Base Port. The port number to send the packet to.
Resolve Host. Select On to resolve the host name to the IP address.
6. Click the Start Test button.
The traceroute results display.
To clear the results from the display:
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Maintenance, select Diagnostics.
4. Click the Clear Results button.
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Advanced Wireless Settings
You can configure the wireless radio settings and other advanced settings.
To configure advanced wireless settings:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Wireless Settings.
The following screen displays:
Advanced Settings
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4. Configure the settings described in the following table.
Advanced Wireless Settings
Description
Wireless Access
Point
Enable
By default this check box is selected so that the
modem router works as a wireless access point. You
can turn off the wireless radio to disable access
through this device, which can be helpful for
configuration, network tuning, or troubleshooting
activities.
Advanced
Configuration
•
•
•
Fragmentation Threshold The default settings for these fields usually work fine.
Change them only if you have a specific reason for
doing so.
CTS/RTS Threshold
Preamble Mode
WPS Settings
Disable router’s PIN
Selecting this check box disables the PIN that WPS
clients use to connect to the modem router with the
PIN method. Normally this check box is cleared,
which is the default setting.
Keep Existing Settings
If a WPS client is added, the modem router
automatically selects this check box. When the Keep
Existing Settings check box is selected, the SSID
and wireless security settings remain the same when
more WPS clients are added.
Wireless Access List Set up Access List
Access control is disabled by default so that any
computer that is configured with the correct SSID
can connect.
5. Click the Apply button.
Your changes are saved.
MAC Filtering
By default, the modem router allows any connected computer to access the Internet. The
MAC Filtering screen lets you block specific computers, based on their MAC addresses, from
access to the Internet on selected days and times.
To use MAC filtering to block Internet access for a specific computer:
Advanced Settings
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select MAC Filtering.
The following screen displays:
The Trusted Devices table shows computers that have access to the Internet through the
modem router.
4. In the Add MAC Filter table, use one of these methods to specify computers to block:
•
If the computer is in the Trusted Devices table, select its radio button. The MAC
address is added into the Add MAC Filter table.
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•
If the computer you want is not listed, click the Refresh button to update the Trusted
Devices table.
If the computer is still not listed, complete the Device Name and MAC Address fields.
5. Click the Add button.
The Enable check box for the computer in the MAC Filter List is automatically selected.
6. To block the computer, select the days and times:
•
•
Days to Block. Select the days to block the computer selected in the MAC Filter List.
The default is Everyday.
Time of Day to Block. You can specify the time of day to block the computer. The
default is All Day. Be sure that you clear the All Day check box if you want to enter
specific times. The selected period applies to each day that you selected.
7. Click the Apply button.
8. Repeat these steps for all computers that you want to block.
To stop blocking a computer:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select MAC Filtering.
The MAC Filtering screen displays.
4. In the MAC Filter List, select the computer.
5. Clear its Enable check box.
The computer remains in the list; however, it is not blocked.
6. Click the Apply button.
Your changes are saved.
Advanced Settings
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To remove a computer from the list:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select MAC Filtering.
The MAC Filtering screen displays.
4. In the MAC Filter List, select the computer.
5. Click the Delete button.
6. Click the Apply button.
Your changes are saved.
IP Filtering
By default, any computer is allowed access to the Internet through your modem router. You
can use IP filtering to block specific computers based on their IP addresses from access to
the Internet on selected days and times.
To set up IP filtering:
Advanced Settings
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select IP Filtering.
The following screen displays:
The Trusted Devices table shows computers that are allowed access to the Internet
through your modem router.
4. Add devices to the IP Filter List as needed:
•
If the computer you want to add appears in the Trusted Devices table, select its radio
button to capture its IP address.
If the computer you want is not listed, click the Refresh button to update the Trusted
Devices table.
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•
If the name of the computer you want to add does not display, you can type a name
for the computer you are adding; or enter the IP address of the computer you want to
block.
5. Click the Add button.
The Enable check box is automatically selected.
6. Select the days to block.
7. In the Time of Day to Block section, select a start time and an end time. This time range
applies to each day you selected in Day(s) to Block section for the specific computer. All
day is the default value. Clear the All day check box if you specify a start time and end time.
8. Click the Apply button.
Your changes are saved.
To delete a device from the IP Filter List:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select IP Filtering.
4. Select a device from the IP Filter list.
5. Click the Delete button.
Your device is removed from the IP Filter list.
6. Click the Apply button.
Your changes are saved.
Port Blocking
You can use port blocking to block outbound traffic on specific ports. Outbound traffic rules
control access to outside resources from local users. The default rule is to allow all access
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from the LAN side to the outside. You can use port blocking to add predefined or custom
rules to specify exceptions to the default rule.
Note: The default rule allows any outbound traffic not blocked by rules that
you create.
To add a custom service:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Port Blocking.
The following screen displays:
4. From the Service list, select the service you want to block.
5. To add a custom service that is not in the list of services, specify these settings in the Add
Custom Service table:
•
Name. A name for the service.
Advanced Settings
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•
•
•
Start Port. The start of the range of ports for the service.
End Port. The end of the range of port for the service.
Protocol. The protocol for the ports:
-
-
-
TCP. TCP only.
UDP. UDP only.
Both. Both TCP and UDP.
•
Local IP Address. The local IP address for the computer that is using the service.
6. Click the Add button.
Your settings are saved. The Active Filters table now displays the list of ports that are
currently blocked.
To delete a custom service from the Active Filters table:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Port Blocking.
The Port Blocking screen displays.
4. Select the radio button in the Active Filters table for the custom service that you want to
delete.
5. Click the Delete button.
The custom service is deleted.
To clear all the fields in the Add Custom Service table or to unselect a radio button
from the Active Filters table:
Advanced Settings
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Port Blocking.
The Port Blocking screen displays.
4. Click the Reset button.
The Add Custom Service table is cleared, or the radio button you selected from the
Active Filters table is unselected.
Port Forwarding
A firewall has default rules for inbound traffic (WAN to LAN) and for outbound traffic. Port
forwarding affects the inbound rules. These rules restrict access from outsiders. By default,
the modem router blocks access from outside except for responses to requests from the LAN
side. You can use port forwarding to add rules to specify exceptions to the default rule.
Because the modem router uses Network Address Translation (NAT), your network presents
only one IP address to the Internet, and outside users cannot directly address any of your
local computers. However, by defining an inbound rule you can make a local server (for
example, a web server or game server) or computer visible and available to the Internet. The
rule tells the modem router to direct inbound traffic for a particular service to one local server
or computer based on the destination port number. Directing traffic is also known as port
forwarding.
Some residential broadband ISPs do not allow you to run server processes (such as a web or
FTP server) from your location. Your ISP might check for servers and suspend your account
if it finds active services at your location. See the ISP’s Acceptable Use policy.
Pay attention to the following considerations before configuring port forwarding:
•
If DHCP assigns the IP address of the local server computer, the address might change
when the computer is rebooted. To keep the address from changing, you can assign a
static IP address to your server outside the range that DHCP assigns, but in the same
Advanced Settings
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subnet as your LAN. By default, the IP addresses from 192.168.0.2 through 192.168.0.9
are reserved for this purpose.
•
•
Local computers must access the local server using the computers’ local LAN address
(192.168.0.XXX, by default). Attempts by local computers to access the server using the
external WAN IP address fail.
Port forwarding opens holes in your firewall. Enable only ports that are necessary.
To configure port forwarding and services for specific inbound traffic:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Port Forwarding.
4. From the Service list, select the service for which you want to configure port forwarding.
The following screen displays:
5. To add a custom rule that is not in the list of services, specify these settings in the Add
Custom Rules table:
Advanced Settings
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•
•
•
•
Name. A name for the service.
Start Port. The start port for the service.
End Port. The end port for the service.
Protocol. The protocol for the ports:
-
-
-
TCP. TCP only.
UDP. UDP only.
Both. Both TCP and UDP.
•
Local IP Address. Complete the local IP address for the computer that is using the
service.
6. Perform one of these actions:
•
•
•
Click the Add button. The Active Forwarding Rules table displays the list of forwarded
ports.
To delete a service, select the radio button in the Active Forwarding Rules table for
the service that you want to delete, and click the Delete button.
To reset the selection in the Service list and to clear all the fields in the Add Custom
Rules, click the Reset button.
Port Triggering
Port triggering is an advanced feature that you can use to allow gaming and other Internet
applications that the firewall would otherwise block. You must know the port numbers the
application uses. Port triggering operates as follows:
1. A computer makes an outgoing connection using a port number defined in the Port
Triggering table.
2. The modem router records this connection, opens the incoming port or ports associated with
this entry in the Port Triggering List, and associates them with the computer.
3. The remote system receives the computer’s request, and responds using a different port
number.
4. The modem router matches the response to the previous request, and forwards the
response to the computer. (Without port triggering, this response would be treated as a new
connection request rather than a response. As such, it would be handled in accordance with
the port forwarding rules.)
Note: Only one computer at a time can use port triggering. After a computer
finishes using a port triggering application, a short time-out period
passes before another computer can use the application.
To configure port triggering:
Advanced Settings
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Port Triggering.
The following screen displays:
4. For each port trigger, enter the settings in the Port Triggering List:
•
•
•
Trigger Range. To specify the range of outgoing ports that are monitored to trigger
the incoming port forwarding rule, enter the start port and end port.
Target Range. To specify the range of incoming ports that are opened when
triggered, enter the start port and end port.
Protocol. Select the protocol for the ports:
-
-
TCP. TCP only.
UDP. UDP only.
Advanced Settings
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-
Both. Both TCP and UDP.
5. Select the Enable check box for the port trigger.
6. Click the Apply button.
Your changes are saved and the port trigger is activated.
To remove a configured port trigger from the table:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Port Triggering.
The port triggering screen displays.
4. Select the radio button next to the port trigger.
5. Click the delete button.
The port trigger is removed.
To return all trigger and target ranges to zero:
A login screen displays.
2. Enter the modem router user name and password.
Advanced Settings
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The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select Port Triggering.
The port triggering screen displays.
4. Click the Reset button.
The trigger and target ranges return to zero.
DMZ Host
You can set up a default DMZ computer. Specifying a default DMZ computer allows you to
set up a computer that is available to anyone on the Internet for services that you have not
defined. To minimize security risks, set up the DMZ host only if you are willing to risk open
access. If you do not define a DMZ host, the modem router discards any undefined service
requests.
To set up a DMZ host:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select DMZ Host.
Advanced Settings
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The following screen displays:
4. Select the Respond to Ping on WAN Port check box.
When you select this check box, the modem router, not the DMZ computer, responds to a
ping request.
For example, some systems tracking the performance of the broadband connections in
terms of latency and packet loss need the modem router to reply to ping requests.
5. Type the last digits of the IP address in the DMZ Address field.
The DMZ host feature is disabled when the last digit is zero.
6. Click the Apply button.
LAN IP Setup
You can configure LAN services such as the IP address of the modem router and DHCP. The
TCP/IP and DHCP default values work fine in most cases.
Note: If you disable the DHCP server, assign a static IP address to your
computer to reconnect to the modem router and enable the DHCP
server again.
To configure LAN IP settings:
A login screen displays.
Advanced Settings
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2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select LAN IP.
The following screen displays:
4. Specify these settings:
•
•
LAN IP Address. The factory default setting is 192.168.0.1.
Subnet Mask. The network number portion of an IP address. Unless you are
implementing subnetting, use 255.255.255.0 as the subnet mask.
•
•
DHCP Server. The Yes radio button is selected by default so that the modem router
acts as a DHCP server, providing the TCP/IP configuration for all the computers
connected to it.
If you plan to assign IP addresses manually, or you have another DHCP server on
your network, select the No radio button.
Starting IP Address and Ending IP Address. These fields specify the range in the IP
address pool.
•
•
Max Users. The maximum number of users on the network.
5. Click the Apply button.
Advanced Settings
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Reserve an IP Address for DHCP Use
To reserve an IP address for DHCP use, enter the DHCP server reservation settings for the
private LAN under DHCP Reservation Lease Info in the LAN IP screen.
To reserve an IP address for DHCP:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select LAN IP.
The LAN IP screen displays.
4. In the DHCP Reservation Lease Info section, enter the MAC address of the computer for
which you want to reserve an IP address.
5. Enter the permanent IP address for the computer.
6. Click the Add button.
Your changes are saved.
The MAC address and IP address are displayed in the DHCP Client Lease Info table. The
current system time is also displayed.
To delete an IP address from the DHCP Client Lease Info table:
Advanced Settings
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select LAN IP.
The LAN IP screen displays.
4. In the DHCP Client Lease Info table, select the radio button for the MAC and IP address that
you want to remove.
5. Click the Delete button.
The information for the selected MAC and IP address is removed from the DHCP Client
Lease Info table.
6. To remove all information from the DHCP Client Lease Info table, click the Clear DHCP
Leases button.
LAN Switch
The modem router’s LAN interference is a 10/100/1GBASE-T Ethernet switch. The switch
ports are set to automatically negotiate speed and duplex communication with any connected
device. You might want to configure the port if the devices do not auto-negotiate correctly.
To configure the switch ports:
Advanced Settings
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select LAN Switch.
The following screen displays:
4. For each port, select the appropriate speed and duplex setting.
5. Click the Apply button.
Your changes are saved.
To disable a LAN port:
A login screen displays.
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2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select LAN Switch.
4. In the Auto column corresponding to the port you want to disable, clear the check box.
5. Click the Apply button.
Configure Universal Plug and Play
Universal Plug and Play (UPnP) helps devices, such as Internet appliances and computers,
access the network and connect to other devices as needed. UPnP devices can
automatically discover the services from other registered UPnP devices on the network. With
UPnP, you can specify the following:
•
•
Advertisement period. Specifies how often the modem router broadcasts its UPnP
information. The default is 30 minutes. Lower numbers ensure that control points
have current device status at the expense of more network traffic. Larger numbers
compromise the freshness of the device status but can significantly reduce network
traffic.
Advertisement time to live. The time to live for the advertisement, measured in hops
(steps) for each UPnP packet that is sent. Hops are the steps a packet takes between
routers. The number of hops can range from 1 to 255. The default value for the
advertisement time to live is four hops, which should be fine for most home networks.
If you notice that some devices are not being updated or reached correctly, you might
need to increase this value slightly.
To configure UPnP:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
Advanced Settings
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The modem router main menu displays.
3. In the main menu, under Advanced, select UPnP.
4. Select the Turn UPnP On check box.
By default, this check box is cleared. This prevents the modem router from allowing any
devices to automatically control the resources, such as port forwarding, of the modem
router.
5. Complete the Advertisement Period (in minutes) and Advertisement Time to Live (in
hops) fields.
The UPnP Portmap Table displays the IP address of each UPnP device that is accessing
the modem router and which internal and external ports of the modem router that device
opened. The UPnP Portmap Table also displays the protocol for the port that was opened
and if that port is still active for each IP address.
6. To save your changes, click the Apply button.
7. To disregard any unsaved changes, click the Cancel button.
8. To update the UPnP Portmap Table and to show the active ports that are currently opened
by UPnP devices, click the Refresh button to.
Set Networking Protocols
Network Time Protocol (NTP) is a networking protocol that synchronizes clocks between
computer systems over packet-switched, variable-latency data networks.
To enable NTP:
Advanced Settings
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A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select NTP.
The following screen displays:
4. Select the NTP enable check box.
5. Enter the IP server addresses:
a. Enter the first server IP address in the Server IP Address 1 field.
b. Enter the second server IP address in the Server IP Address 2 field.
c. Enter the third server IP address in the Server IP Address 3 field.
6. Click the Apply button.
Your changes are saved.
Enable Network Address Translation
Network Address Translation (NAT) provides one-to-many translation of IP addresses
between devices. This means that your network presents only one IP address to the Internet,
and outside users cannot directly address any of your local computers. Enable NAT to allow
multiple computers on your network to access the Internet using a single public IP address.
NAT is enabled by default.
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To disable NAT:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under Advanced, select NAT.
The following screen displays:
4. Clear the Turn NAT On check box.
5. Click the Apply button.
Access a USB Device on the Network
You can access a USB device connected to the modem router USB port.
To access a USB device from a Windows computer:
6. Insert a USB drive into the USB port on the front or back of the modem router.
7. If your USB drive has a power supply, you must use it when you connect the USB drive to
the modem router.
When you connect the USB drive to the modem router USB port, it might take up to two
minutes before it is ready for sharing. By default, the USB drive is available to all
computers on your local area network (LAN).
8. Click the Start button on your computer’s desktop.
Advanced Settings
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9. Type \\192.168.0.5 in the search field.
Your modem router network’s USB folder displays:
Note: If two USBs are connected to the modem router, the first USB
connected to the modem router is called storage0 and the second
USB is called storage1.
To access a USB device from a MAC computer:
1. Insert a USB drive into the USB port on the front or back of the modem router.
2. If your USB drive has a power supply, you must use it when you connect the USB drive to
the modem router.
When you connect the USB drive to the modem router USB port, it might take up to two
minutes before it is ready for sharing. By default, the USB drive is available to all
computers on your local area network (LAN).
3. On your Mac, go to Finder.
Advanced Settings
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4. Select Go > Connect to Server.
The Connect to Server screens displays.
5. Type smb://192.168.0.5 in the Server Address field.
6. Click the Connect button.
7. When prompted, select the Guest or Registered User radio button, enter your name and
password, and click the Connect button.
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Your modem router network’s USB folder displays:
Note: If two USBs are connected to the modem router, the first USB
connected to the modem router is called storage0 and the second
USB is called storage1.
To safely remove a USB device:
A login screen displays.
2. Enter the modem router user name and password.
The default user name is admin. The default password is password. The user name and
password are case-sensitive.
The modem router main menu displays.
3. In the main menu, under USB Storage, select Basic Settings.
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The following screen displays:
4. Click the Safely Remove USB Device button.
You can remove your USB device from the modem router.
Advanced Settings
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6.
Troubleshooting
6
This chapter gives information about troubleshooting your modem router. For the common
problems listed, see the section indicated:
•
•
•
Have I connected the modem router correctly?
I cannot access the modem router configuration with my browser.
I have configured the modem router but I cannot access the Internet.
See Troubleshoot the ISP Connection on page 82.
•
•
My modem router is not responding.
If you cannot remember the modem router’s configuration password or you want to clear the
Tip: NETGEAR provides helpful articles, documentation, and the latest
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Basic Functions
After you have turned on power to the modem router, do the following:
1. Check to see that the Power LED is lit.
2. Check that the numbered Ethernet LEDs light momentarily.
3. After a few seconds, check that the LEDs are lit for any local ports that are connected.
The following table provides help when you are using the LEDs for troubleshooting.
Table 2. LED behavior
LED Behavior
Action
All LEDs are off when the modem
router is plugged in.
•
Make sure that the power cord is properly connected to your
modem router and that the power supply adapter is properly
connected to a functioning power outlet.
•
Check that you are using the 12 V DC power adapter supplied by
NETGEAR for this product.
If the error persists, you have a hardware problem. Contact technical
support.
All LEDs stay on.
Clear the modem router’s configuration to factory defaults. This sets
the modem router’s IP address to 192.168.0.1. See Factory Default
If the error persists, you might have a hardware problem. Contact
technical support.
LAN LED is off for a port with an
Ethernet connection.
•
•
Make sure that the Ethernet cable connections are secure at the
modem router and at the hub or computer.
Make sure that power is turned on to the connected hub or
computer.
•
•
Be sure that you are using the correct cable.
Internet LED is off and the modem
router is connected to the cable
television cable.
Make sure that the coaxial cable connections are secure at the
modem router and at the wall jack.
•
•
Make sure that your cable service provider provisioned your cable
Internet service. Your provider should verify that the signal quality
is good enough for cable modem service.
Remove any excessive splitters you might have on your cable line.
It might be necessary to run a “home run” back to the point where
the cable enters your home.
Connect to the Modem Router’s Main Menu
If you are unable to access the modem router’s main menu from a computer on your local
network, check the following:
•
Check the Ethernet connection between the computer and the modem router as
Troubleshooting
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•
Make sure that your computer’s IP address is on the same subnet as the modem router.
If you are using the recommended addressing scheme, your computer’s address is in the
range of 192.168.0.10 to 192.168.0.254.
Note: If your computer’s IP address is shown as 169.254.x.x:
Recent versions of Windows and Mac OS generate and assign an IP
address if the computer cannot reach a DHCP server. These
autogenerated addresses are in the range of 169.254.x.x. If your IP
address is in this range, check the connection from the computer to
the modem router and reboot your computer.
•
•
If your modem router’s IP address has been changed and you do not know the current IP
address, clear the modem router’s configuration to factory defaults. This sets the modem
Make sure that your browser has Java, JavaScript, or ActiveX enabled. If you are using
Internet Explorer, click the Refresh button to make sure that the Java applet is loaded.
•
•
Try quitting the browser and launching it again.
Make sure that you are using the correct login information. The modem router user name
is admin, and the default password is password, both in lower case letters. (Caps Lock
should be off when you enter these.)
If the modem router does not save changes you have made, try the following:
•
When entering configuration settings, be sure to click the Apply button before moving to
another screen, or your changes are lost.
•
Click the Refresh or Reload button in the web browser. The changes might have
occurred, but the web browser might be caching the old configuration.
Troubleshoot the ISP Connection
If your modem router is unable to access the Internet and your Internet LED is lit, you might
need to register the cable MAC address or device MAC address of your modem router with
your cable service provider.
Additionally, your computer might not have the modem router configured as its TCP/IP
modem router. If your computer obtains its information from the modem router by DHCP,
reboot the computer and verify the modem router address. For more information, see
Troubleshoot a TCP/IP Network Using a Ping Utility
Most TCP/IP terminal devices and routers contain a ping utility that sends an echo request
packet to the designated device. The device then responds with an echo reply. You can
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easily troubleshoot a TCP/IP network by using the ping utility in your computer or
workstation.
Test the LAN Path to Your Modem Router
You can use ping to verify that the LAN path to your modem router is set up correctly.
To ping the modem router from a computer running Windows 95 or later:
1. From the Windows toolbar, click the Start button and select Run.
2. In the field provided, type ping followed by the IP address of the modem router, as in this
example:
ping 192.168.0.1
3. Click the OK button.
You should see a message like this one:
Pinging <IP address> with 32 bytes of data
If the path is working, you see this message:
Reply from < IP address >: bytes=32 time=NN ms TTL=xxx
If the path is not working, you see this message:
Request timed out
If the path is not working correctly, you could have one of the following problems:
•
Wrong physical connections. Check the following:
-
-
Check that the corresponding LEDs are lit for your network interface card and for
the hub ports (if any) that are connected to your workstation and modem router.
•
Wrong network configuration. Check the following:
-
Verify that the Ethernet card driver software and TCP/IP software are both
installed and configured on your computer or workstation.
-
Verify that the IP address for your modem router and your workstation are correct
and that the addresses are on the same subnet.
Test the Path from Your Computer to a Remote Device
After verifying that the LAN path works correctly, test the path from your computer to a
remote device. From the Windows Run dialog box, type:
ping -n 10 <IP address>
where <IP address> is the IP address of a remote device such as your ISP’s DNS server.
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If the path is functioning correctly, replies as in the previous section are displayed. If you do
not receive replies, do the following:
•
Check that your computer has the IP address of your modem router listed as the default
modem router. If the IP configuration of your computer is assigned by DHCP, this
information is not visible in your computer’s Network Control Panel. Verify that the IP
address of the modem router is listed as the default modem router.
•
•
Check to see that the network address of your computer (the portion of the IP address
specified by the netmask) is different from the network address of the remote device.
Check that your Internet LED is lit.
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Factory Default Settings
You can return the modem router to its factory settings. On the rear panel of the modem
router, press and hold the Reset button for over seven seconds. The modem router
resets and returns to the factory configuration settings shown in the following table.
Table 3. Factory default settings
Feature
Parameter
Default
Modem Router User login URL
login
admin/password
User name and password
(case-sensitive)
Local network
(LAN)
LAN IP
192.168.0.1
255.255.255.0
Enabled
Subnet mask
DHCP server
DHCP starting IP address
DHCP Ending IP address
192.168.0.2
192.168.0.254
Firewall
Inbound communication from the Disabled (except traffic on port 80, the HTTP port)
Internet
Outbound communication to the Enabled (all)
Internet
Source MAC filtering
WAN MAC address
WAN MTU size
Disabled
Internet
connection
Use default hardware address.
1500
Supplemental Information
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Table 3. Factory default settings (continued)
Feature
Parameter
Default
Wireless
Wireless communication
SSID name
Enabled
Appears on the label of the modem router.
Security
WPA/WPA2
The default WPA/WPA2 password appears on the
label of the modem router.
Broadcast SSID
Transmission speed
Country/region
RF channel
Enabled
1
Auto
United States (varies by region)
Auto
Operating mode
Data rate
n, g, and b
Best
Output power
Full
Access point
Enabled
Authentication type
Wireless Card Access List
Open System
All wireless stations allowed
1. Maximum wireless signal rate derived from IEEE Standard 802.11 specifications. Actual throughput varies. Network
conditions and environmental factors, including volume of network traffic, building materials and construction, and
network overhead, might lower actual data throughput rate.
Technical Specifications
The following table describes the technical specifications for the modem router.
Table 4. Technical specifications
Component
Specification
Network protocol and
standards compatibility
Data and routing protocols: TCP/IP, DHCP server, and client, DNS relay, NAT
(many-to-one), TFTP client, VPN pass-through (IPSec, PPTP)
Power adapter
•
•
North America (input): 120V, 60 Hz, input
All regions (output): 12 V DC @ 2.5A output 30W maximum
Physical specifications
Environmental
•
•
Dimensions: 10.2 by 6.49 by 3.65 in. (259.17 by 164.77 by 92.72 mm)
Weight: 1.30 lb (590 g)
•
•
•
Operating temperature: 32 to 140F (0 to 40C)
Operating humidity: 90% maximum relative humidity, noncondensing
Electromagnetic emissions: Meets requirements of: FCC Part 15 Class B.
Supplemental Information
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Component
Specification
Interface
Local: 10BASE-T, 100/1000BASE-Tx, RJ-45
USB 2.0/1.1 function
802.11n/g/b
Internet: DOCSIS 3.0. Downward compatible with DOCSIS 2.0, 1.1, and 1.0
Supplemental Information
88
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