Linksys Network Card WPC54GX User Manual

®
A Division of Cisco Systems, Inc.  
2.4GHz  
802.11g  
Wireless-G  
Notebook Adapter  
with SRX  
User Guide  
WIRELESS  
Model No.  
WPC54GX  
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Wireless-G Notebook Adapter with SRX  
Table of Contents  
Chapter 1: Introduction  
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1
Welcome  
What’s in this Guide?  
1
Chapter 2: Planning Your Wireless Network  
Network Topology  
3
3
3
Roaming  
Network Layout  
4
Chapter 3: Getting to Know the Wireless-G Notebook Adapter with SRX  
The LED Indicators  
5
5
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX  
Running the Setup Wizard  
6
6
Chapter 5: Using the Wireless Network Monitor  
Accessing the Wireless Network Monitor  
Link Information  
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Site Survey  
Profiles  
Creating a New Profile  
Appendix A: Troubleshooting  
Common Problems and Solutions  
Frequently Asked Questions  
Appendix B: Wireless Security  
Security Precautions  
Security Threats Facing Wireless Networks  
Appendix C: Windows Help  
Appendix D: Glossary  
Appendix E: Specifications  
Appendix F: Warranty Information  
Appendix G: Regulatory Information  
Appendix H: Contact Information  
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List of Figures  
Figure 3-1: Front Panel  
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Figure 4-1: The Setup Wizard’s Welcome Screen  
Figure 4-2: The Setup Wizard’s License Agreement  
Figure 4-3: The Setup Wizard’s SSID (Wireless Network Name) Screen  
Figure 4-4: The Setup Wizard’s WEP Screen  
Figure 4-5: The Setup Wizard’s WPA-Personal Screen  
Figure 4-6: The Setup Wizard’s WPA2-Personal Screen  
Figure 4-7: The Setup Wizard’s Check Settings Screen  
Figure 4-8: The Setup Wizard’s Connecting the Adapter Screen  
Figure 4-9: The Setup Wizard’s Congratulations Screen  
Figure 5-1: Link Information  
Figure 5-2: More Information - Wireless Network Status  
Figure 5-3: More Information - Wireless Network Statistics  
Figure 5-4: Site Survey  
Figure 5-5: Profiles  
Figure 5-6: Importing a Profile  
Figure 5-7: Exporting a Profile  
Figure 5-8: Creating a New Profile  
Figure 5-9: Enter Profile Name  
Figure 5-10: Network Settings  
Figure 5-11: Wireless Mode for New Profile  
Figure 5-12: Ad-Hoc Mode Settings  
Figure 5-13: Wireless Security - WEP for New Profile  
Figure 5-14: WEP Settings for New Profile  
Figure 5-15: Wireless Security - WPA-Personal  
Figure 5-16: WPA-Personal Settings  
Figure 5-17: Wireless Security - WPA-Enterprise  
Figure 5-18: WPA-Enterprise Encryption  
Figure 5-19: WPA-Enterprise - EAP-TLS  
Figure 5-20: WPA-Enterprise - EAP-TTLS  
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Figure 5-21: WPA-Enterprise - EAP-PEAP  
Figure 5-22: Wireless Security - RADIUS  
Figure 5-23: RADIUS - EAP-TLS  
Figure 5-24: RADIUS - EAP-TTLS  
Figure 5-25: RADIUS - EAP-PEAP  
Figure 5-26: Confirm New Settings  
Figure 5-27: Congratulations  
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Chapter 1: Introduction  
Welcome  
Thank you for choosing the Wireless-G Notebook Adapter with SRX. With this Adapter, your wireless networking  
experience will be faster and easier than ever.  
network: a series of computers or devices  
connected for the purpose of data sharing,  
storage, and/or transmission between users.  
How does the Adapter do this? Like all wireless products, the Adapter allows for greater range and mobility  
within your wireless network, whether it’s using the Wireless-G (802.11g) or Wireless-B (802.11b) standard.  
adapter: a device that adds network functionality  
to your PC.  
But what does all of this mean?  
Networks are useful tools for sharing computer resources. You can access one printer from different computers  
and access data located on another computer's hard drive. Networks are even used for playing multiplayer video  
games. So, networks are not only useful in homes and offices, they can also be fun.  
802.11b: an IEEE wireless networking standard  
that specifies a maximum data transfer rate of  
11Mbps and an operating frequency of 2.4GHz.  
PCs equipped with wireless cards and adapters can communicate without cumbersome cables. By sharing the  
same wireless settings, within their transmission radius, they form a wireless network.  
The included Setup Wizard walks you through configuring the Adapter to your wireless network settings, step by  
step. Use the instructions in this Guide to help you set up and connect the Adapter using the Setup Wizard. These  
instructions should be all you need to get the most out of the Adapter.  
802.11g: an IEEE wireless networking standard  
that specifies a maximum data transfer rate of  
54Mbps and an operating frequency of 2.4GHz.  
What’s in this Guide?  
This user guide covers the steps for setting up and using the Wireless-G Notebook Adapter with SRX.  
Chapter 1: Introduction  
This chapter describes the Adapter’s applications and this User Guide.  
Chapter 2: Planning Your Wireless Network  
This chapter discusses a few of the basics about wireless networking.  
Chapter 3: Getting to Know the Wireless-G Notebook Adapter with SRX  
This chapter describes the physical features of the Adapter.  
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX  
This chapter explains how to run the Adapter’s Setup Wizard to configure and insert the Adapter.  
Chapter 1: Introduction  
Welcome  
1
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Chapter 5: Using the Wireless Network Monitor  
This chapter show you how to use the Adapter’s Wireless Network Monitor.  
Appendix A: Troubleshooting  
This appendix describes some problems and solutions, as well as frequently asked questions, regarding  
installation and use of the Adapter.  
Appendix B: Wireless Security  
This appendix discusses security issues regarding wireless networking and measures you can take to help  
protect your wireless network.  
Appendix C: Windows Help  
This appendix describes how you can use Windows Help for instructions about networking, such as installing  
the TCP/IP protocol.  
Appendix D: Glossary  
This appendix gives a brief glossary of terms frequently used in networking.  
Appendix E: Specifications  
This appendix provides the Adapter’s technical specifications.  
Appendix F: Warranty Information  
This appendix supplies the Adapter’s warranty information.  
Appendix G: Regulatory Information  
This appendix supplies the Adapter’s regulatory information.  
Appendix H: Contact Information  
This appendix provides contact information for a variety of Linksys resources, including Technical Support.  
Chapter 1: Introduction  
What’s in this Guide?  
2
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Chapter 2: Planning Your Wireless Network  
Network Topology  
A wireless network is a group of computers, each equipped with one wireless adapter. Computers in a wireless  
network must be configured to share the same radio channel. Several PCs equipped with wireless cards or  
adapters can communicate with one another to form an ad-hoc network.  
ad-hoc: a group of wireless devices  
communicating directly with each other (peer-  
to-peer) without the use of an access point.  
Linksys wireless adapters also provide users access to a wired network when using an access point or wireless  
router. An integrated wireless and wired network is called an infrastructure network. Each wireless PC in an  
infrastructure network can talk to any computer in a wired network infrastructure via the access point or wireless  
router.  
infrastructure: a wireless network that is  
bridged to a wired network via an access point.  
An infrastructure configuration extends the accessibility of a wireless PC to a wired network, and can double the  
effective wireless transmission range for two wireless adapter PCs. Since an access point is able to forward data  
within a network, the effective transmission range in an infrastructure network can be doubled.  
Roaming  
roaming: the ability to take a wireless device  
from one access point's range to another without  
losing the connection.  
Infrastructure mode also supports roaming capabilities for mobile users. Roaming means that you can move your  
wireless PC within your network and the access points will pick up the wireless PC's signal, providing that they  
both share the same channel and SSID.  
ssid: your wireless network's name.  
Before you consider enabling roaming, choose a feasible radio channel and optimum access point position.  
Proper access point positioning combined with a clear radio signal will greatly enhance performance.  
Chapter 2: Planning Your Wireless Network  
Network Topology  
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Network Layout  
Linksys wireless access points and wireless routers have been designed for use with 802.11b and 802.11g  
products. Products using the 802.11g and 802.11b standards can communicate with each other.  
Access points and wireless routers are compatible with 802.11b and 802.11g adapters, such as the notebook  
adapters for your laptop computers, PCI adapters for your desktop PCs, and USB adapters for when you want to  
enjoy USB connectivity. Wireless products will also communicate with a wireless print server.  
When you wish to connect your wired network with your wireless network, network ports on access points and  
wireless routers can be connected to any of Linksys's switches or routers.  
With these, and many other, Linksys products, your networking options are limitless. Go to the Linksys website at  
Chapter 2: Planning Your Wireless Network  
Network Layout  
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Chapter3:GettingtoKnowtheWireless-GNotebookAdapter  
with SRX  
The LED Indicators  
The Adapter's LEDs display information about network activity.  
Figure 3-1: Front Panel  
Power  
Link  
Green. The Power LED lights up when the Adapter is powered on.  
Green. The Link LED lights up when the Adapter has an active connection.  
Chapter 3: Getting to Know the Wireless-G Notebook Adapter with SRX  
The LED Indicators  
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Chapter 4: Setting up the Wireless-G Notebook Adapter  
with SRX  
Overview  
The Wireless-G Notebook Adapter Setup Wizard will guide you through the installation procedure. The Setup  
Wizard will install the Wireless Network Monitor and driver, as well as configure the Adapter.  
NOTE: You must run the Setup Wizard to install the software before installing  
the hardware.  
Insert the Setup Wizard CD-ROM into your CD-ROM drive. The Setup Wizard should run automatically, and the  
Welcome screen should appear. If it does not, click the Start button and choose Run. In the field that appears,  
enter D:\setup.exe (if “D” is the letter of your CD-ROM drive).  
On the Welcome screen, you have the following choices:  
Click Here to Start - Click the Click Here to Start button to begin the software installation process.  
User Guide - Click the User Guide button to open the PDF file of this User Guide.  
Exit - Click the Exit button to exit the Setup Wizard.  
Running the Setup Wizard  
1. To install the Adapter, click the Click Here to Start button on the Welcome screen.  
Figure 4-1: The Setup Wizard’s Welcome Screen  
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX  
Running the Setup Wizard  
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2. After reading the License Agreement, click the Next button if you agree, or click the Cancel button to end the  
installation.  
Figure 4-2: The Setup Wizard’s License Agreement  
3. In the SSID field, enter the SSID or name of your wireless network. The SSID must be identical for all devices  
in the network. The default setting is linksys (all lowercase). Click the Next button.  
NOTE: The SSID should be unique to your network and identical for all devices  
within the network.  
Figure 4-3: The Setup Wizard’s SSID (Wireless Network  
Name) Screen  
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX  
Running the Setup Wizard  
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4. Select the type of security you want to use: 64-bit WEP, 128-bit WEP, WPA-Personal, or WPA2-Personal.  
All devices in a network must use the same type.  
WEP  
WEP - To use WEP encryption, select 64-bit WEP or 128-bit WEP from the drop-down menu, and enter a  
passphrase or WEP key.  
Passphrase - Instead of manually entering a WEP key, you can enter a passphrase in the Passphrase field, so  
a WEP key is automatically generated. It is case-sensitive and should not be longer than 16 alphanumeric  
characters. This passphrase must match the passphrase of your other wireless network devices and is  
compatible with Linksys wireless products only. (If you have any non-Linksys wireless products, enter the  
WEP key manually on those products.)  
WEP Key - The WEP key you enter must match the WEP key of your wireless network. If you are using 64-bit  
WEP encryption, then the key must consist of exactly 10 hexadecimal characters. If you are using 128-bit  
WEP encryption, then the key must consist of exactly 26 hexadecimal characters. Valid hexadecimal  
characters are “0” to “9” and “A” to “F”.  
Figure 4-4: The Setup Wizard’s WEP Screen  
TX Key - The default transmit key number is 1. If your network’s access point or wireless router uses transmit  
key number 2, 3, or 4, select the appropriate number from the TX Key drop-down box.  
Authentication -The default is set to Auto, when it auto-detects for Shared Key or Open system. Shared  
Key is when both the sender and the recipient share a WEP key for authentication. Open key is when the  
sender and the recipient do not share a WEP key for authentication. All devices on your network must use the  
same authentication type.  
Click the Next button to continue. Click the Back button to return to the previous screen. Click the Help  
button for more information.  
WPA-Personal  
WPA-Personal/WPA2 Personal offers two encryption methods, TKIP and AES, with dynamic encryption keys.  
Select the type of algorithm, TKIP or AES, for the Encryption setting. Enter a WPA Shared Key of 8-63  
characters in the Passphrase field.  
Click the Next button to continue. Click the Back button to return to the previous screen. Click the Help  
button for more information.  
Figure 4-5: The Setup Wizard’s WPA-Personal Screen  
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX  
Running the Setup Wizard  
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5. WPA2 Personal  
WPA2 Personal offers two encryption methods, TKIP and AES, with dynamic encryption keys.  
Select the type of algorithm, TKIP or AES, for the Encryption setting. Enter a WPA Shared Key of 8-63  
characters in the Passphrase field.  
Click the Next button to continue. Click the Back button to return to the previous screen. Click the Help  
button for more information.  
Figure 4-6: The Setup Wizard’s WPA2-Personal Screen  
6. The Setup Wizard will ask you to review your settings before it starts to install files. Click the Next button if  
you are satisfied with your settings, or click the Back button to change any settings.  
Figure 4-7: The Setup Wizard’s Check Settings Screen  
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX  
Running the Setup Wizard  
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7. With the Adapter’s label facing up, slide the Adapter into the CardBus slot until it locks in place. Your notebook  
will detect and automatically install the Adapter’s driver. Then click the Next button.  
Figure 4-8: The Setup Wizard’s Connecting the  
Adapter Screen  
8. After the Adapter has been installed, the Congratulations screen will appear. Click the Exit button.  
The installation of the Wireless-G Notebook Adapter with SRX is complete.  
If you want to check the link information, search for available wireless networks, or make additional  
configuration changes, go to “Chapter 5: Using the Wireless Network Monitor.”  
Figure 4-9: The Setup Wizard’s Congratulations Screen  
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX  
Running the Setup Wizard  
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Chapter 5: Using the Wireless Network Monitor  
Use the Wireless Network Monitor to check the link information, search for available wireless networks, or create  
profiles that hold different configuration settings.  
Accessing the Wireless Network Monitor  
After installing the Adapter, the Wireless-G Notebook Adapter Wireless Network Monitor icon will appear in your  
system tray. Double-click the icon.  
The Link Information screen will appear. From this screen, you can find out how strong the current wireless signal  
is and how good the connection’s quality is. You can also click the More Information button to view additional  
status information about the current wireless connection. To search for available wireless networks, click the  
Site Survey tab. To perform configuration changes, click the Profiles tab.  
Link Information  
The Link Information screen displays network mode, signal strength, and link quality information about the  
current connection. It also provides a button to click for additional status information.  
Ad-Hoc Mode or Infrastructure Mode - The screen indicates whether the Adapter is currently working in ad-  
hoc or infrastructure mode.  
Signal Strength - The Signal Strength bar indicates signal strength.  
Link Quality - The Link Quality bar indicates the quality of the wireless network connection.  
Click the More Information button to view additional information about the wireless network connection.  
Figure 5-1: Link Information  
Chapter 5: Using the Wireless Network Monitor  
Accessing the Wireless Network Monitor  
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Clicking the More Information button displays more information about the Adapter’s connection, as shown  
below:  
Wireless Network Status  
The Wireless Network Status screen provides information on your current network settings.  
Wireless Network Status  
Status - The status of the wireless network connection.  
SSID - This is the unique name of the wireless network.  
Wireless Mode - The mode of the wireless network currently in use is displayed here.  
Transfer Rate - The data transfer rate of the current connection is shown here.  
Channel - The channel to which the wireless network devices are set.  
Security - The status of the security feature.  
Authentication - This is your wireless network’s authentication method.  
IP Address - The IP Address of the Adapter.  
Figure 5-2: More Information - Wireless Network Status  
Subnet Mask - The Subnet Mask of the Adapter.  
Default Gateway - The Default Gateway address of the Adapter.  
DNS - The DNS address of the Adapter.  
DHCP Client- This displays the status of the DHCP client.  
MAC - The MAC address of the wireless network’s access point.  
Signal Strength - The Signal Strength bar indicates the signal strength.  
Link Quality - The Link Quality bar indicates the quality of the wireless network connection.  
Click the Statistics button to go to the Wireless Network Statistics screen. Click the Back button to return to the  
initial Link Information screen. Click the Save to Profile button to save the active settings to a profile.  
Chapter 5: Using the Wireless Network Monitor  
Link Information  
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Wireless Network Statistics  
The Wireless Network Statistics screen provides statistics on your current network settings.  
Transmit Rate - The data transfer rate of the current connection. (In Auto mode, the Adapter dynamically shifts to  
the fastest data transfer rate possible at any given time.)  
Receive Rate - The rate that data is received.  
Received - This shows how many kilobytes of data were received by the Adapter, in real time, since connecting  
to the wireless network.  
Transmitted - This shows how many kilobytes of data were transmitted from the Adapter, in real time, since  
connecting to the wireless network.  
Noise Level - This shows the level of background noise affecting the wireless signal. A lower reading translates  
into a higher quality signal.  
Signal Strength - This is the intensity of the wireless signal received by the Adapter.  
Driver Version - This shows the version of the Adapter’s driver.  
Figure 5-3: More Information - Wireless Network  
Statistics  
Signal Strength - The Signal Strength bar indicates the signal strength.  
Link Quality - The Link Quality bar indicates the quality of the wireless network connection.  
Refresh Stats. - Click this button to update the statistics on this screen.  
Click the Back button to return to the initial Link Information screen. Click the Settings button to go to the  
Wireless Network Status screen. Click the Save to Profile button to save the active settings to a profile.  
Chapter 5: Using the Wireless Network Monitor  
Link Information  
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Site Survey  
The Site Survey screen displays a list of infrastructure and ad-hoc networks available for connection in the table  
on the left. You may click SSID, CH (Channel), or Signal, to sort by that field. On the right, the selected network’s  
SSID, wireless mode, channel setting, encryption method, and MAC address are displayed.  
SSID - The SSID or unique name of the wireless network.  
CH - The channel upon which the network broadcasts.  
Signal - The percentage of signal strength, from 0 to 100%.  
Site Information  
For the network selected, the following settings are listed:  
SSID - The SSID or unique name of the wireless network.  
Wireless Mode - The mode of the wireless network currently in use.  
Channel - The channel to which the wireless network devices are set.  
Security - The status of the wireless security feature.  
MAC - The MAC address of the wireless network’s access point.  
Figure 5-4: Site Survey  
Refresh - Click the Refresh button to perform a new search for wireless networks.  
Connect - To connect to one of the networks on the list, select the wireless network, and then click the Connect  
button.  
Chapter 5: Using the Wireless Network Monitor  
Site Survey  
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Profiles  
The Profiles screen lets you save different configuration profiles for different network setups. The table on the left  
displays a list of infrastructure and ad-hoc networks available for connection. This table shows the network’s  
profile name and the wireless network’s SSID, as set in the connection profile. On the right, the selected profile’s  
wireless mode, transfer rate, channel setting, encryption method, and authentication method are displayed.  
Profile - The name of the profile.  
SSID - The SSID or unique name of the wireless network.  
Arrows - Click the arrows up or down to move the profile’s priority order.  
Profile Information  
For the profile selected, the following are listed:  
Wireless Mode - The mode of the wireless network currently in use.  
Figure 5-5: Profiles  
Transfer Rate - The Adapter is set to Auto mode, so it will dynamically shift to the fastest data transfer rate  
possible at any given time.  
Channel - The channel to which the wireless network devices are set.  
Security - The status of the wireless security feature.  
Authentication - The authentication setting for the network.  
Figure 5-6: Importing a Profile  
Connect - To connect using a specific profile, select the profile, and click the Connect button.  
New - Click the New button to create a new profile. See the next section, “Creating a New Profile,” for details.  
Edit - Select a profile, and click the Edit button to change an existing profile.  
Import - Click the Import button to import a profile that has been saved in another location. Select the  
appropriate file, and click the Open button.  
Export - Select the profile you want to save in a different location, and click the Export button. Direct Windows to  
the appropriate folder, and click the Save button. To export more than one profile, you will have to export them  
one at a time.  
Figure 5-7: Exporting a Profile  
Delete - Click the Delete button to delete a profile. The default profile cannot be deleted.  
Chapter 5: Using the Wireless Network Monitor  
Profiles  
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Creating a New Profile  
1. On the Profiles screen, click the New button to create a new profile.  
Figure 5-8:  
2. Enter a name for the new profile, and click the OK button. Click the Cancel button to return to the Profiles  
screen without entering a name.  
Creating a New Profile  
3. The Wireless Mode screen shows a choice of two wireless modes. Click the Infrastructure Mode radio  
button if you want your wireless computers to communicate with computers on your wired network via a  
wireless access point. Click the Ad-Hoc Mode radio button if you want multiple wireless computers to  
communicate directly with each other. Enter the SSID for your network.  
Click the Next button to continue or the Back button to return to the previous screen.  
Infrastructure Mode - This mode allows wireless and wired networks to communicate through an access  
point.  
Ad-Hoc Mode - This mode allows wireless-equipped computers to communicate directly with each other. No  
access point is used.  
SSID - The network name. It must be used for all the devices in your wireless network. It is case-sensitive and  
should be a unique name to help prevent others from entering your network.  
Figure 5-9: Enter Profile Name  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
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4. The Network Settings screen will appear. If your network has a router or other DHCP server, click the radio  
button next to Obtain network settings automatically (DHCP).  
If your network does not have a DHCP server, click the radio button next to Specify network settings. Enter  
an IP Address, Subnet Mask, Default Gateway, and DNS addresses appropriate for your network. You must  
specify the IP Address and Subnet Mask on this screen. If you are unsure about the Default Gateway and DNS  
addresses, leave these fields empty.  
IP Address - This IP Address must be unique to your network.  
Subnet Mask - The Adapter’s Subnet Mask must be the same as your wired network’s Subnet Mask.  
Default Gateway - Enter the IP address of your network’s Gateway here.  
DNS 1 and DNS 2 - Enter the DNS address of your wired Ethernet network here.  
Click the Next button to continue, or click the Back button to return to the previous screen.  
Figure 5-10: Network Settings  
5. If you chose Infrastructure Mode during the previous step, go to Step 5 now. The Ad-Hoc Mode Settings  
screen will appear. If you chose Ad-Hoc Mode, select the correct operating channel for your network from the  
Channel drop-down menu. Then, select the Network Mode from the drop-down menu. Click the Next button,  
and go to Step 5. Click the Back button to change any settings.  
Channel - The channel you choose should match the channel set on the other devices in your wireless  
network. If you are unsure about which channel to use, select the default channel.  
Network Mode - Select Mixed Mode, and both Wireless-G and Wireless-B computers will be allowed on the  
network, but the speed may be reduced. Select G-Only Mode for maximum speed, but no Wireless-B users  
will be allowed on the network.  
Figure 5-11: Wireless Mode for New Profile  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
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6. The Wireless Security screen will appear. Select WEP, WPA-Personal, WPA2-Personal, WPA-Enterprise,  
WPA2-Enterprise or RADIUS from the drop-down menu. WEP stands for Wired Equivalent Privacy, WPA-  
Personal stands for Wi-Fi Protected Access Pre-Shared Key, which is a security standard stronger than WEP  
encryption, and RADIUS stands for Remote Authentication Dial-In User Service. If you don’t want to use  
wireless security, select Disabled. Then, click the Next button to continue or the Back button to return to the  
previous screen.  
Figure 5-12: Ad-Hoc Mode Settings  
WEP  
Encryption - To use WEP encryption, select 64-bit or 128-bit from the drop-down menu, and enter a  
passphrase or key.  
Passphrase - Instead of manually entering a WEP key, you can enter a passphrase in the Passphrase field, so  
a WEP key is automatically generated. It is case-sensitive and should not be longer than 31 alphanumeric  
characters. This passphrase must match the passphrase of your other wireless network devices and is  
compatible with Linksys wireless products only. (If you have any non-Linksys wireless products, enter the  
WEP key manually on those products.)  
WEP Key - The WEP key you enter must match the WEP key of your wireless network. If you are using 64-bit  
WEP encryption, then the key must consist of exactly 10 hexadecimal characters. If you are using 128-bit  
WEP encryption, then the key must consist of exactly 26 hexadecimal characters. Valid hexadecimal  
characters are “0” to “9” and “A” to “F”.  
TX Key - The default transmit key number is 1. If your network’s access point or wireless router uses transmit  
key number 2, 3, or 4, select the appropriate number from the TX Key drop-down box.  
Authentication -The default is set to Auto, when it auto-detects for Shared Key or Open system. Shared  
Key is when both the sender and the recipient share a WEP key for authentication. Open key is when the  
sender and the recipient do not share a WEP key for authentication. All devices on your network must use the  
same authentication type.  
Figure 5-13: Wireless Security - WEP for New Profile  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
18  
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WPA-Personal/WPA2 Personal  
WPA-Personal/WPA2 Personal offers two encryption methods, TKIP and AES, with dynamic encryption keys.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-14: WEP Settings for New Profile  
Select the type of algorithm, TKIP or AES, from the Encryption drop-down menu. Enter a WPA Shared Key of  
8-63 characters in the Passphrase field.  
Figure 5-15: Wireless Security - WPA-Personal  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
19  
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WPA-Enterprise/WPA2 Enterprise  
WPA-Enterprise features WPA used in coordination with a RADIUS server. (This should only be used when a  
RADIUS server is connected to your network router.) WPA-Enterprise offers two encryption methods, TKIP and  
AES, with dynamic encryption keys. It also offers three authentication methods: EAP-TLS, EAP-TTLS,  
and EAP-PEAP.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-16: WPA-Personal Settings  
Select the type of algorithm, TKIP or AES, for the Encryption setting.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-17: Wireless Security - WPA-Enterprise  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
20  
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From the next screen, select the Authentication Method from the drop-down menu. The options are described  
below.  
EAP-TLS  
Enter your login name in the Login Name field. From the Certificate drop-down menu, select the certificate  
you have installed to authenticate you on your wireless network. Select Validate server certificate to make  
sure that the certificate for the server is valid.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-18: WPA-Enterprise Encryption  
EAP-TTLS  
Enter your login name in the Login Name field. Enter the password of your wireless network in the Password  
field. Select Validate server certificate to make sure that the certificate for the server is valid. Then select  
the appropriate TTLS Protocol from the drop-down menu.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-19: WPA-Enterprise - EAP-TLS  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
21  
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EAP-PEAP  
Enter your login name in the Login Name field. Enter the password of your wireless network in the Password  
field. Select Validate server certificate to make sure that the certificate for the server is valid. Then select  
the appropriate Peap Inner EAP method from the Peap Inner EAP drop-down menu.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-20: WPA-Enterprise - EAP-TTLS  
RADIUS  
RADIUS features WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS  
server is connected to the network router.) It offers three authentication methods: EAP-TLS, EAP-TTLS, and  
EAP-PEAP.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-21: WPA-Enterprise - EAP-PEAP  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
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From the next screen, select the Authentication Method from the drop-down menu. The options are described  
below.  
EAP-TLS  
Enter your login name in the Login Name field. From the Certificate drop-down menu, select the certificate  
you have installed to authenticate you on your wireless network. Select Validate server certificate to make  
sure that the certificate for the server is valid.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-22: Wireless Security - RADIUS  
EAP-TTLS  
Enter your login name in the Login Name field. Enter the password of your wireless network in the Password  
field. Select Validate server certificate to make sure that the certificate for the server is valid. Then select  
the appropriate TTLS Protocol from the drop-down menu.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-23: RADIUS - EAP-TLS  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
23  
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EAP-PEAP  
Enter your login name in the Login Name field. Enter the password of your wireless network in the Password  
field. Select Validate server certificate to make sure that the certificate for the server is valid. Then select  
the appropriate Peap Inner EAP method from the drop-down menu.  
Click the Next button to continue. Click the Back button to return to the previous screen.  
Figure 5-24: RADIUS - EAP-TTLS  
7. The Confirm New Settings screen will appear next showing the new settings. To save the new settings, click  
the Save button. To edit the new settings, click the Back button. To exit the Wireless Network Monitor, click  
the Exit button.  
Figure 5-25: RADIUS - EAP-PEAP  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
24  
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8. The Congratulations screen will appear next. Click Connect to Network to implement the new settings  
immediately and return to the Link Information screen. Click Return to Profiles screen to keep the current  
settings active and return to the Profiles screen.  
You have successfully created a connection profile.  
Figure 5-26: Confirm New Settings  
Chapter 5: Using the Wireless Network Monitor  
Creating a New Profile  
25  
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Appendix A: Troubleshooting  
This appendix consists of two parts: “Common Problems and Solutions” and “Frequently Asked Questions.” This  
appendix provides solutions to problems that may occur during the installation and operation of the Wireless-G  
Notebook Adapter with SRX. Read the description below to solve your problems. If you can't find an answer here,  
check the Linksys website at www.linksys.com.  
Common Problems and Solutions  
1. My computer does not recognize the Wireless-G Notebook Adapter with SRX.  
Make sure that the Adapter is properly inserted into the CardBus slot.  
2. The Wireless-G Notebook Adapter with SRX does not work properly.  
Reinsert the Adapter into the notebook’s CardBus slot.  
For Windows 98SE or Me, right-click on My Computer, and select Properties. Select the Device Manager  
tab, and click on the Network Adapter. You will find the Adapter if it is installed successfully. If you see a  
yellow exclamation mark, the resources may be conflicting and you must follow the steps below:  
Uninstall the driver software from your PC.  
Restart your PC and repeat the software and hardware installation as specified in this User Guide.  
3. I cannot communicate with the other computers linked via Ethernet in the Infrastructure  
configuration.  
Make sure that the notebook is powered on.  
Make sure that the Adapter is configured with the same SSID and security settings as the other computers in  
the Infrastructure configuration.  
Frequently Asked Questions  
Can I run an application from a remote computer over the wireless network?  
This will depend on whether or not the application is designed to be used over a network. Consult the  
application’s user guide to determine if it supports operation over a network.  
Can I play computer games with other members of the wireless network?  
Yes, as long as the game supports multiple players over a LAN (local area network). Refer to the game’s user  
guide for more information.  
Appendix A: Troubleshooting  
Common Problems and Solutions  
26  
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What is the IEEE 802.11b standard?  
It is one of the IEEE standards for wireless networks. The 802.11b standard allows wireless networking hardware  
from different manufacturers to communicate, provided that the hardware complies with the 802.11b standard.  
The 802.11b standard states a maximum data transfer rate of 11Mbps and an operating frequency of 2.4GHz.  
What is the IEEE 802.11g standard?  
It is one of the IEEE standards for wireless networks. The 802.11g standard allows wireless networking hardware  
from different manufacturers to communicate, provided that the hardware complies with the 802.11g standard.  
The 802.11g standard states a maximum data transfer rate of 54Mbps and an operating frequency of 2.4GHz.  
What IEEE 802.11b features are supported?  
The product supports the following IEEE 802.11b functions:  
CSMA/CA plus Acknowledge protocol  
Multi-Channel Roaming  
Automatic Rate Selection  
RTS/CTS feature  
Fragmentation  
Power Management  
What IEEE 802.11g features are supported?  
The product supports the following IEEE 802.11g functions:  
CSMA/CA plus Acknowledge protocol  
OFDM protocol  
Multi-Channel Roaming  
Automatic Rate Selection  
RTS/CTS feature  
Fragmentation  
Power Management  
What is ad-hoc mode?  
When a wireless network is set to ad-hoc mode, the wireless-equipped computers are configured to  
communicate directly with each other. The ad-hoc wireless network will not communicate with any wired  
network.  
What is infrastructure mode?  
When a wireless network is set to infrastructure mode, the wireless network is configured to communicate with  
a wired network through a wireless access point.  
Appendix A: Troubleshooting  
Frequently Asked Questions  
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What is roaming?  
Roaming is the ability of a portable computer user to communicate continuously while moving freely throughout  
an area greater than that covered by a single access point. Before using the roaming function, the workstation  
must make sure that it is the same channel number with the access point of dedicated coverage area.  
To achieve true seamless connectivity, the wireless LAN must incorporate a number of different functions. Each  
node and access point, for example, must always acknowledge receipt of each message. Each node must  
maintain contact with the wireless network even when not actually transmitting data. Achieving these functions  
simultaneously requires a dynamic RF networking technology that links access points and nodes. In such a  
system, the user’s end node undertakes a search for the best possible access to the system. First, it evaluates  
such factors as signal strength and quality, as well as the message load currently being carried by each access  
point and the distance of each access point to the wired backbone. Based on that information, the node next  
selects the right access point and registers its address. Communications between end node and host computer  
can then be transmitted up and down the backbone.  
As the user moves on, the end node’s RF transmitter regularly checks the system to determine whether it is in  
touch with the original access point or whether it should seek a new one. When a node no longer receives  
acknowledgment from its original access point, it undertakes a new search. Upon finding a new access point, it  
then re-registers, and the communication process continues.  
What is ISM band?  
The FCC and their counterparts outside of the U.S. have set aside bandwidth for unlicensed use in the ISM  
(Industrial, Scientific and Medical) band. Spectrum in the vicinity of 2,4 GHz, in particular, is being made available  
worldwide. This presents a truly revolutionary opportunity to place convenient high-speed wireless capabilities in  
the hands of users around the globe.  
What is Spread Spectrum?  
Spread Spectrum technology is a wideband radio frequency technique developed by the military for use in  
reliable, secure, mission-critical communications systems. It is designed to trade off bandwidth efficiency for  
reliability, integrity, and security. In other words, more bandwidth is consumed than in the case of narrowband  
transmission, but the trade-off produces a signal that is, in effect, louder and thus easier to detect, provided that  
the receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver is not tuned to  
the right frequency, a spread-spectrum signal looks like background noise. There are two main alternatives,  
Direct Sequence Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS).  
What is DSSS? What is FHSS? And what are their differences?  
Frequency-Hopping Spread-Spectrum (FHSS) uses a narrowband carrier that changes frequency in a pattern that  
is known to both transmitter and receiver. Properly synchronized, the net effect is to maintain a single logical  
channel. To an unintended receiver, FHSS appears to be short-duration impulse noise. Direct-Sequence Spread-  
Spectrum (DSSS) generates a redundant bit pattern for each bit to be transmitted. This bit pattern is called a chip  
Appendix A: Troubleshooting  
Frequently Asked Questions  
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(or chipping code). The longer the chip, the greater the probability that the original data can be recovered. Even if  
one or more bits in the chip are damaged during transmission, statistical techniques embedded in the radio can  
recover the original data without the need for retransmission. To an unintended receiver, DSSS appears as low  
power wideband noise and is rejected (ignored) by most narrowband receivers.  
Would the information be intercepted while transmitting on air?  
WLAN features two-fold protection in security. On the hardware side, as with Direct Sequence Spread Spectrum  
technology, it has the inherent security feature of scrambling. On the software side, WLAN offers the encryption  
function (WEP) to enhance security and access control.  
What is WEP?  
WEP is Wired Equivalent Privacy, a data privacy mechanism based on a shared key algorithm, as described in the  
IEEE 802.11 standard.  
Appendix A: Troubleshooting  
Frequently Asked Questions  
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Appendix B: Wireless Security  
Linksys wants to make wireless networking as safe and easy for you as possible. The current generation of  
Linksys products provide several network security features, but they require specific action on your part for  
implementation. So, keep the following in mind whenever you are setting up or using your wireless network.  
Security Precautions  
The following is a complete list of security precautions to take (at least steps 1 through 5 should be followed):  
1. Change the default SSID.  
2. Disable SSID Broadcast.  
3. Change the default password for the Administrator account.  
4. Enable MAC Address Filtering.  
NOTE: Some of these security features are  
available only through the network router or  
access point. Refer to the router or access  
point’s documentation for more information.  
5. Change the SSID periodically.  
6. Use the highest encryption algorithm possible. Use WPA if it is available. Please note that this may reduce  
your network performance.  
7. Change the WEP encryption keys periodically.  
Security Threats Facing Wireless Networks  
Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking  
products first listen for “beacon messages”. These messages can be easily decrypted and contain much of the  
network’s information, such as the network’s SSID (Service Set Identifier). Here are the steps you can take:  
Change the administrator’s password regularly. With every wireless networking device you use, keep in  
mind that network settings (SSID, WEP keys, etc.) are stored in its firmware. Your network administrator is the  
only person who can change network settings. If a hacker gets a hold of the administrator’s password, he, too,  
can change those settings. So, make it harder for a hacker to get that information. Change the administrator’s  
password regularly.  
Appendix B: Wireless Security  
Security Precautions  
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SSID. There are several things to keep in mind about the SSID:  
1. Disable Broadcast  
2. Make it unique  
3. Change it often  
Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be  
more convenient, it allows anyone to log into your wireless network. This includes hackers. So, don’t broadcast  
the SSID.  
Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is “linksys”.)  
Hackers know these defaults and can check these against your network. Change your SSID to something unique  
and not something related to your company or the networking products you use.  
Change your SSID regularly so that any hackers who have gained access to your wireless network will have to  
start from the beginning in trying to break in.  
MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only  
those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with  
a random MAC Address.  
WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a cure-all for wireless security  
concerns. This is overstating WEP’s ability. Again, this can only provide enough security to make a hacker’s job  
more difficult.  
There are several ways that WEP can be maximized:  
1. Use the highest level of encryption possible  
2. Use “Shared Key” authentication  
IMPORTANT: Always remember that each  
device in your wireless network MUST use  
the same encryption method and encryption  
key or your wireless network will not function  
properly.  
3. Change your WEP key regularly  
WPA. Wi-Fi Protected Access (WPA) is the newest and best available standard in Wi-Fi security. Three modes are  
available: WPA-Personal, WPA-Enterprise, and Radius. WPA-Personal gives you a choice of two encryption  
methods: TKIP (Temporal Key Integrity Protocol), which utilizes a stronger encryption method and incorporates  
Message Integrity Code (MIC) to provide protection against hackers, and AES (Advanced Encryption System),  
which utilizes a symmetric 128-Bit block data encryption. WPA-Enterprise offers two encryption methods, TKIP  
and AES, with dynamic encryption keys. RADIUS (Remote Authentication Dial-In User Service) utilizes a RADIUS  
server for authentication.  
Appendix B: Wireless Security  
Security Threats Facing Wireless Networks  
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WPA-Personal. If you do not have a RADIUS server, Select the type of algorithm, TKIP or AES, and enter a  
password in the Passphrase field of 8-63 characters.  
WPA-Enterprise. WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS  
server is connected to the Router or other device.) WPA-Enterprise offers two encryption methods, TKIP and  
AES, with dynamic encryption keys.  
RADIUS. WEP used in coordination with a RADIUS server. (This should only be used when a RADIUS server is  
connected to the Router or other device.)  
Implementing encryption may have a negative impact on your network’s performance, but if you are transmitting  
sensitive data over your network, encryption should be used.  
These security recommendations should help keep your mind at ease while you are enjoying the most flexible  
and convenient technology Linksys has to offer.  
Appendix B: Wireless Security  
Security Threats Facing Wireless Networks  
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Appendix C: Windows Help  
Almost all wireless products require Microsoft Windows. Windows is the most used operating system in the world  
and comes with many features that help make networking easier. These features can be accessed through  
Windows Help and are described in this appendix.  
TCP/IP  
Before a computer can communicate with an access point or wireless router, TCP/IP must be enabled. TCP/IP is a  
set of instructions, or protocol, all PCs follow to communicate over a network. This is true for wireless networks  
as well. Your PCs will not be able to utilize wireless networking without having TCP/IP enabled. Windows Help  
provides complete instructions on enabling TCP/IP.  
Shared Resources  
If you wish to share printers, folder, or files over your network, Windows Help provides complete instructions on  
utilizing shared resources.  
Network Neighborhood/My Network Places  
Other PCs on your network will appear under Network Neighborhood or My Network Places (depending upon the  
version of Windows you're running). Windows Help provides complete instructions on adding PCs to your  
network.  
Appendix C: Windows Help  
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Appendix D: Glossary  
802.11b - A wireless networking standard that specifies a maximum data transfer rate of 11Mbps and an  
operating frequency of 2.4GHz.  
802.11g - A wireless networking standard that specifies a maximum data transfer rate of 54Mbps, an operating  
frequency of 2.4GHz, and backward compatibility with 802.11b devices.  
Access Point - A device that allows wireless-equipped computers and other devices to communicate with a  
wired network. Also used to expand the range of a wireless network.  
Adapter - A device that adds network functionality to your PC.  
Ad-hoc - A group of wireless devices communicating directly with each other (peer-to-peer) without the use of  
an access point.  
AES (Advanced Encryption Standard) - A security method that uses symmetric 128-bit block data encryption.  
Backbone - The part of a network that connects most of the systems and networks together, and handles the  
most data.  
Bandwidth - The transmission capacity of a given device or network.  
Beacon Interval - Data transmitted on your wireless network that keeps the network synchronized.  
Bit - A binary digit.  
Boot - To start a device and cause it to start executing instructions.  
Bridge - A device that connects different networks.  
Broadband - An always-on, fast Internet connection.  
Browser - An application program that provides a way to look at and interact with all the information on the  
World Wide Web.  
Buffer - A shared or assigned memory area that is used to support and coordinate different computing and  
networking activities so one isn't held up by the other.  
Byte - A unit of data that is usually eight bits long  
Appendix D: Glossary  
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Cable Modem - A device that connects a computer to the cable television network, which in turn connects to the  
Internet.  
CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) - A method of data transfer that is used to prevent  
data collisions.  
CTS (Clear To Send) - A signal sent by a wireless device, signifying that it is ready to receive data.  
Daisy Chain - A method used to connect devices in a series, one after the other.  
Database - A collection of data that is organized so that its contents can easily be accessed, managed, and  
updated.  
DDNS (Dynamic Domain Name System) - Allows the hosting of a website, FTP server, or e-mail server with a  
Default Gateway - A device that forwards Internet traffic from your local area network.  
DHCP (Dynamic Host Configuration Protocol) - A networking protocol that allows administrators to assign  
temporary IP addresses to network computers by “leasing” an IP address to a user for a limited amount of time,  
instead of assigning permanent IP addresses.  
DMZ (Demilitarized Zone) - Removes the Router's firewall protection from one PC, allowing it to be “seen” from  
the Internet.  
DNS (Domain Name Server) - The IP address of your ISP's server, which translates the names of websites into IP  
addresses.  
Domain - A specific name for a network of computers.  
Download - To receive a file transmitted over a network.  
DSL (Digital Subscriber Line) - An always-on broadband connection over traditional phone lines.  
DSSS (Direct-Sequence Spread-Spectrum) - Frequency transmission with a redundant bit pattern resulting in a  
lower probability of information being lost in transit.  
DTIM (Delivery Traffic Indication Message) - A message included in data packets that can increase wireless  
efficiency.  
Dynamic IP Address - A temporary IP address assigned by a DHCP server.  
Appendix D: Glossary  
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EAP (Extensible Authentication Protocol) - A general authentication protocol used to control network access.  
Many specific authentication methods work within this framework.  
EAP-PEAP (Extensible Authentication Protocol-Protected Extensible Authentication Protocol) - A mutual  
authentication method that uses a combination of digital certificates and another system, such as passwords.  
EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) - A mutual authentication method that  
uses digital certificates.  
Encryption - Encoding data transmitted in a network.  
Ethernet - A networking protocol that specifies how data is placed on and retrieved from a common transmission  
medium.  
Finger - A program that tells you the name associated with an e-mail address.  
Firewall - A set of related programs located at a network gateway server that protects the resources of a  
network from users from other networks.  
Firmware - The programming code that runs a networking device.  
Fragmentation -Breaking a packet into smaller units when transmitting over a network medium that cannot  
support the original size of the packet.  
FTP (File Transfer Protocol) - A protocol used to transfer files over a TCP/IP network.  
Full Duplex - The ability of a networking device to receive and transmit data simultaneously.  
Gateway - A device that interconnects networks with different, incompatible communications protocols.  
Half Duplex - Data transmission that can occur in two directions over a single line, but only one direction at a  
time.  
Hardware - The physical aspect of computers, telecommunications, and other information technology devices.  
HTTP (HyperText Transport Protocol) - The communications protocol used to connect to servers on the World  
Wide Web.  
Infrastructure - A wireless network that is bridged to a wired network via an access point.  
IP (Internet Protocol) - A protocol used to send data over a network.  
IP Address - The address used to identify a computer or device on a network.  
Appendix D: Glossary  
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IPCONFIG - A Windows 2000 and XP utility that displays the IP address for a particular networking device.  
IPSec (Internet Protocol Security) - A VPN protocol used to implement secure exchange of packets at the IP layer.  
ISM band - Radio bandwidth utilized in wireless transmissions.  
ISP (Internet Service Provider) - A company that provides access to the Internet.  
LAN - The computers and networking products that make up your local network.  
LEAP (Lightweight Extensible Authentication Protocol) - A mutual authentication method that uses a username  
and password system.  
MAC (Media Access Control) Address - The unique address that a manufacturer assigns to each networking  
device.  
Mbps (MegaBits Per Second) - One million bits per second; a unit of measurement for data transmission.  
mIRC - An Internet Relay Chat program that runs under Windows.  
Multicasting - Sending data to a group of destinations at once.  
NAT (Network Address Translation) - NAT technology translates IP addresses of a local area network to a different  
IP address for the Internet.  
Network - A series of computers or devices connected for the purpose of data sharing, storage, and/or  
transmission between users.  
NNTP (Network News Transfer Protocol) - The protocol used to connect to Usenet groups on the Internet.  
Node - A network junction or connection point, typically a computer or work station.  
OFDM (Orthogonal Frequency Division Multiplexing) - Frequency transmission that separates the data stream  
into a number of lower-speed data streams, which are then transmitted in parallel to prevent information from  
being lost in transit.  
Packet - A unit of data sent over a network.  
Passphrase - Used much like a password, a passphrase simplifies the WEP encryption process by automatically  
generating the WEP encryption keys for Linksys products.  
PEAP (Protected Extensible Authentication Protocol) - A mutual authentication method that uses a combination  
of digital certificates and another system, such as passwords.  
Appendix D: Glossary  
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Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online.  
POP3 (Post Office Protocol 3) - A standard mail server commonly used on the Internet.  
Port - The connection point on a computer or networking device used for plugging in cables or adapters.  
Power over Ethernet (PoE) - A technology enabling an Ethernet network cable to deliver both data and power.  
PPPoE (Point to Point Protocol over Ethernet) - A type of broadband connection that provides authentication  
(username and password) in addition to data transport.  
PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be  
tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe.  
Preamble - Part of the wireless signal that synchronizes network traffic.  
RADIUS (Remote Authentication Dial-In User Service) - A protocol that uses an authentication server to control  
network access.  
RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires.  
Roaming - The ability to take a wireless device from one access point's range to another without losing the  
connection.  
Router - A networking device that connects multiple networks together.  
RTS (Request To Send) - A networking method of coordinating large packets through the RTS Threshold setting.  
Server - Any computer whose function in a network is to provide user access to files, printing, communications,  
and other services.  
SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet.  
SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol.  
Software - Instructions for the computer. A series of instructions that performs a particular task is called a  
“program”.  
SOHO (Small Office/Home Office) - Market segment of professionals who work at home or in small offices.  
SPI (Stateful Packet Inspection) Firewall - A technology that inspects incoming packets of information before  
allowing them to enter the network.  
Appendix D: Glossary  
38  
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Spread Spectrum - Wideband radio frequency technique used for more reliable and secure data transmission.  
SSID (Service Set IDentifier) - Your wireless network's name.  
Static IP Address - A fixed address assigned to a computer or device that is connected to a network.  
Static Routing - Forwarding data in a network via a fixed path.  
Subnet Mask - An address code that determines the size of the network.  
Switch - 1. A data switch that connects computing devices to host computers, allowing a large number of  
devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an  
electrical circuit.  
TCP (Transmission Control Protocol) - A network protocol for transmitting data that requires acknowledgement  
from the recipient of data sent.  
TCP/IP (Transmission Control Protocol/Internet Protocol) - A set of instructions PCs use to communicate over a  
network.  
Telnet - A user command and TCP/IP protocol used for accessing remote PCs.  
TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password  
capability.  
Throughput - The amount of data moved successfully from one node to another in a given time period.  
TKIP (Temporal Key Integrity Protocol) - a wireless encryption protocol that provides dynamic encryption keys for  
each packet transmitted.  
Topology - The physical layout of a network.  
TX Rate - Transmission Rate.  
UDP (User Datagram Protocol) - A network protocol for transmitting data that does not require acknowledgement  
from the recipient of the data that is sent.  
Upgrade - To replace existing software or firmware with a newer version.  
Upload - To transmit a file over a network.  
URL (Uniform Resource Locator) - The address of a file located on the Internet.  
Appendix D: Glossary  
39  
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VPN (Virtual Private Network) - A security measure to protect data as it leaves one network and goes to another  
over the Internet.  
WAN (Wide Area Network)- The Internet.  
WEP (Wired Equivalent Privacy) - A method of encrypting network data transmitted on a wireless network for  
greater security.  
WINIPCFG - A Windows 98 and Me utility that displays the IP address for a particular networking device.  
WLAN (Wireless Local Area Network) - A group of computers and associated devices that communicate with  
each other wirelessly.  
WPA (Wi-Fi Protected Access) - a wireless security protocol using TKIP (Temporal Key Integrity Protocol)  
encryption, which can be used in conjunction with a RADIUS server.  
Appendix D: Glossary  
40  
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Wireless-G Notebook Adapter with SRX  
Appendix E: Specifications  
Model  
WPC54GX  
Standards  
IEEE 802.11g, IEEE 802.11b  
Power, Link  
LEDs  
Transmit Power  
Protocols  
20dBm for Wireless-B/14dBm for Wireless-G  
802.11b: CCK, QPSK, BPSK; 802.11g: OFDM  
WEP, WPA (AES, TKIP), 802.1x  
64, 128 Bit  
Security Features  
WEP Key Bits  
Dimensions  
Unit Weight  
4.80" x 2.13" x 0.39" (122 mm x 54 mm x 10.0 mm)  
1.76 oz. (0.05 kg.)  
Certifications  
Operating Temp.  
Storage Temp.  
Operating Humidity  
Storage Humidity  
FCC, IC-03, CE  
32ºF to 140ºF (0ºC to 60ºC)  
-13ºF to 149ºF (-20ºC to 65ºC)  
15-95% Maximum, Non-Condensing  
95% Maximum, Non-Condensing  
Appendix E: Specifications  
41  
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Appendix F: Warranty Information  
LIMITED WARRANTY  
Linksys warrants to You that, for a period of three years (the “Warranty Period”), your Linksys Product will be substantially  
free of defects in materials and workmanship under normal use. Your exclusive remedy and Linksys' entire liability under  
this warranty will be for Linksys at its option to repair or replace the Product or refund Your purchase price less any  
rebates. This limited warranty extends only to the original purchaser.  
If the Product proves defective during the Warranty Period call Linksys Technical Support in order to obtain a Return  
Authorization Number, if applicable. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. If You are  
requested to return the Product, mark the Return Authorization Number clearly on the outside of the package and include a  
copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. You  
are responsible for shipping defective Products to Linksys. Linksys pays for UPS Ground shipping from Linksys back to You  
only. Customers located outside of the United States of America and Canada are responsible for all shipping and handling  
charges.  
ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED  
TO THE DURATION OF THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND  
WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED. Some jurisdictions do not  
allow limitations on how long an implied warranty lasts, so the above limitation may not apply to You. This warranty gives  
You specific legal rights, and You may also have other rights which vary by jurisdiction.  
This warranty does not apply if the Product (a) has been altered, except by Linksys, (b) has not been installed, operated,  
repaired, or maintained in accordance with instructions supplied by Linksys, or (c) has been subjected to abnormal  
physical or electrical stress, misuse, negligence, or accident. In addition, due to the continual development of new  
techniques for intruding upon and attacking networks, Linksys does not warrant that the Product will be free of  
vulnerability to intrusion or attack.  
TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE OR PROFIT,  
OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, REGARDLESS OF THE THEORY OF  
LIABILITY (INCLUDING NEGLIGENCE), ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE THE PRODUCT  
(INCLUDING ANY SOFTWARE), EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT  
WILL LINKSYS’ LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT. The foregoing limitations will apply even  
if any warranty or remedy provided under this Agreement fails of its essential purpose. Some jurisdictions do not allow the  
exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You.  
Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623.  
42  
Appendix F: Warranty Information  
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Wireless-G Notebook Adapter with SRX  
Appendix G: Regulatory Information  
FCC STATEMENT  
This product has been tested and complies with the specifications for a Class B digital device, pursuant to Part 15  
of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a  
residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not  
installed and used according to the instructions, may cause harmful interference to radio communications.  
However, there is no guarantee that interference will not occur in a particular installation. If this equipment does  
cause harmful interference to radio or television reception, which is found by turning the equipment off and on,  
the user is encouraged to try to correct the interference by one or more of the following measures:  
Reorient or relocate the receiving antenna  
Increase the separation between the equipment or devices  
Connect the equipment to an outlet other than the receiver's  
Consult a dealer or an experienced radio/TV technician for assistance  
FCC Radiation Exposure Statement  
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This  
equipment should be installed and operated with minimum distance 20cm between the radiator and your body.  
INDUSTRY CANADA (CANADA)  
This device complies with Canadian ICES-003 and RSS210 rules.  
Cet appareil est conforme aux normes NMB-003 et RSS210 d'Industry Canada.  
The use of this device in a system operating either partially or completely outdoors may require the user to obtain  
a license for the system according to the Canadian regulations.  
EC DECLARATION OF CONFORMITY (EUROPE)  
Linksys declares that this product conforms to the specifications listed below, following the provisions of the  
European R&TTE directive 1999/5/EC:  
EN 301 489-1, 301 489-17 General EMC requirements for Radio equipment.  
EN 609 50 Safety  
Appendix G: Regulatory Information  
43  
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EN 300-328-1, EN 300-328-2 Technical requirements for Radio equipment.  
Caution: This equipment is intended to be used in all EU and EFTA countries. Outdoor use may be restricted to  
certain frequencies and/or may require a license for operation. Contact local Authority for procedure to follow.  
Note: Combinations of power levels and antennas resulting in a radiated power level of above 100 mW equivalent  
isotropic radiated power (EIRP) are considered as not compliant with the above mentioned directive and are not  
allowed for use within the European community and countries that have adopted the European R&TTE directive  
1999/5/EC.  
For more details on legal combinations of power levels and antennas, contact Linksys Corporate Compliance.  
Linksys vakuuttaa täten että dieses produkt tyyppinen laite on direktiivin 1999/5/EY oleellisten vaatimusten ja  
sitä koskevien näiden direktiivien muiden ehtojen mukainen.  
Linksys Group déclare que le produit est conforme aux conditions essentielles et aux dispositions relatives à la  
directive 1999/5/EC.  
Belgique:  
Dans le cas d'une utilisation privée, à l'extérieur d'un bâtiment, au-dessus d'un espace public, aucun  
enregistrement n'est nécessaire pour une distance de moins de 300m. Pour une distance supérieure à 300m un  
enregistrement auprès de l'IBPT est requise. Pour une utilisation publique à l'extérieur de bâtiments, une licence  
de l'IBPT est requise. Pour les enregistrements et licences, veuillez contacter l'IBPT.  
France:  
2.4 GHz Bande : les canaux 10, 11, 12, 13 (2457, 2462, 2467, et 2472 MHz respectivement) sont complétement  
libres d'utilisation en France (en utilisation intérieur). Pour ce qui est des autres canaux, ils peuvent être soumis à  
autorisation selon le départment. L'utilisation en extérieur est soumis à autorisation préalable et très restreint.  
amples renseignements.  
SAFETY NOTICES  
Caution: To reduce the risk of fire, use only No.26 AWG or larger telecommunication line cord.  
Do not use this product near water, for example, in a wet basement or near a swimming pool.  
Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lightning.  
Appendix G: Regulatory Information  
44  
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FCC PART 68 STATEMENT  
This equipment complies with Part 68 of the FCC Rules. A label is attached to the equipment that contains,  
among other information, its FCC registration number and ringer equivalence number. If requested, this  
information must be provided to the telephone company.  
This equipment uses the following USOC Jack: RJ-11.  
An FCC compliant telephone cord and modular plug is provided with this equipment. This equipment is designed  
to be connected to the telephone network or premises wiring using a compatible modular jack, which is FCC Part  
68 compliant. Connection to the telephone network should be made by using the standard modular telephone  
jack.  
The REN is useful to determine the quantity of devices that may be connected to the telephone line and still have  
all of those devices ring when your telephone number is called. In most, but not all areas, the sum of RENs  
should not exceed 5. To be certain of the number of devices that may be connected to the line, as determined by  
the total RENs, contact the telephone company to determine the maximum REN for the calling area.  
If this equipment causes harm to the telephone network, the telephone company may discontinue your service  
temporarily. If advance notice is not practical, the telephone company will notify the customer as soon as  
possible. Also, you will be advised of your right to file a complaint with the FCC if you believe it is necessary.  
The telephone company may make changes in its facilities, equipment, operations, or procedures that could  
affect the operation of the equipment. If this happens, the telephone company will provide advance notice in  
order for you to make the necessary modifications in order to maintain uninterrupted service.  
In the event this equipment should fail to operate properly, disconnect the unit from the telephone line. Try using  
another FCC approved device in the same telephone jack. If the trouble persists, call the telephone company  
repair service bureau. If the trouble does not persist and appears to be with this unit, disconnect the unit from  
the telephone line and discontinue use of the unit until it is repaired. Please note that the telephone company  
may ask that you disconnect the equipment from the telephone network until the problem has been corrected or  
until you are sure that the equipment is not malfunctioning. The user must use the accessories and cables  
supplied by the manufacturer to get optimum performance from the product.  
No repairs may be done by the customer. If trouble is experienced with this equipment, please contact your  
authorized support provider for repair and warranty information. If the trouble is causing harm to the telephone  
network, the telephone company may request you remove the equipment from the network until the problem is  
resolved. This equipment cannot be used on telephone company provided coin service. Connection to Party Line  
Service is subject to state tariffs.  
Appendix G: Regulatory Information  
45  
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Appendix H: Contact Information  
Need to contact Linksys?  
Visit us online for information on the latest products and updates  
to your existing products at:  
ftp.linksys.com  
Can't find information about a product you want to buy  
on the web? Do you want to know more about networking  
with Linksys products? Give our advice line a call at:  
Or fax your request in to:  
800-546-5797 (LINKSYS)  
949-823-3002  
If you experience problems with any Linksys product,  
you can call us at:  
800-326-7114  
Don't wish to call? You can e-mail us at:  
If any Linksys product proves defective during its warranty period,  
you can call the Linksys Return Merchandise Authorization  
department for obtaining a Return Authorization Number at:  
(Details on Warranty and RMA issues can be found in the Warranty  
Information section in this Guide.)  
949-823-3000  
46  
Appendix H: Contact Information  
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