Cisco WPC54GX User guide

®
A Division of Cisco Systems, Inc.
2.4 GHz Wireless-G
802.11g
Notebook Adapter
WIRELESS
Model No.
WPC54GX
with SRX
User Guide
Wireless-G Notebook Adapter with SRX
Copyright and Trademarks
Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco
Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2005 Cisco Systems, Inc. All
rights reserved. Other brands and product names are trademarks or registered trademarks of their respective
holders.
WARNING: This product contains chemicals, including lead, known
to the State of California to cause cancer, and birth defects or other
reproductive harm. Wash hands after handling.
This User Guide
The User Guide to the Wireless-G Notebook Adapter with SRX has been designed to make understanding
networking easier than ever. Look for the following items when reading this guide:
This checkmark means there is a note of interest and
is something you should pay special attention to while
using the Adapter.
This exclamation point means there is a caution or
warning and is something that could damage your
property or the Adapter.
This question mark provides you with a reminder about
something you might need to do while using the Adapter.
In addition to these symbols, there are definitions for technical terms that are presented like this:
word: definition.
Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like
this:
Figure 0-1: Sample Figure Description
Figure numbers and descriptions can also be found in the “List of Figures” section in the “Table of Contents”.
WPC54GX-UG-50527C BW
Wireless-G Notebook Adapter with SRX
Table of Contents
Chapter 1: Introduction
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Welcome
What’s in this Guide?
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Chapter 2: Planning Your Wireless Network
Network Topology
Roaming
Network Layout
Chapter 3: Getting to Know the Wireless-G Notebook Adapter with SRX
The LED Indicators
Chapter 4: Setting up the Wireless-G Notebook Adapter with SRX
Running the Setup Wizard
Chapter 5: Using the Wireless Network Monitor
Accessing the Wireless Network Monitor
Link Information
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
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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Wireless-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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.
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.
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.
adapter: a device that adds network functionality
to your PC.
802.11b: an IEEE wireless networking standard
that specifies a maximum data transfer rate of
11Mbps and an operating frequency of 2.4GHz.
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
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Wireless-G Notebook Adapter with SRX
• 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?
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Wireless-G Notebook Adapter with SRX
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.
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.
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.
ad-hoc: a group of wireless devices
communicating directly with each other (peerto-peer) without the use of an access point.
infrastructure: a wireless network that is
bridged to a wired network via an access point.
Roaming
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.
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
roaming: the ability to take a wireless device
from one access point's range to another without
losing the connection.
ssid: your wireless network's name.
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Wireless-G Notebook Adapter with SRX
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
www.linksys.com for more information about wireless products.
Chapter 2: Planning Your Wireless Network
Network Layout
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Wireless-G Notebook Adapter with SRX
Chapter3:GettingtoKnowtheWireless-GNotebookAdapter
with SRX
The LED Indicators
The Adapter's LEDs display information about network activity.
Figure 3-1: Front Panel
Power
Green. The Power LED lights up when the Adapter is powered on.
Link
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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Wireless-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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 adhoc 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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Wireless-G Notebook Adapter with SRX
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.
Figure 5-2: More Information - Wireless Network Status
IP Address - The IP Address of the Adapter.
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-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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.
Figure 5-4: Site Survey
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.
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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Wireless-G Notebook Adapter with SRX
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:
Figure 5-5: Profiles
Wireless Mode - The mode of the wireless network currently in use.
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.
Connect - To connect using a specific profile, select the profile, and click the Connect button.
Figure 5-6: Importing a Profile
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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Wireless-G Notebook Adapter with SRX
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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Wireless-G Notebook Adapter with SRX
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.
Figure 5-10: Network Settings
Click the Next button to continue, or click the Back button to return to the previous screen.
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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Wireless-G Notebook Adapter with SRX
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, WPAPersonal 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.
Chapter 5: Using the Wireless Network Monitor
Creating a New Profile
Figure 5-13: Wireless Security - WEP for New Profile
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Wireless-G Notebook Adapter with SRX
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
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Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
22
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
27
Wireless-G Notebook Adapter with SRX
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 SpreadSpectrum (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
28
Wireless-G Notebook Adapter with SRX
(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
29
Wireless-G Notebook Adapter with SRX
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.
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.
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.
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
30
Wireless-G Notebook Adapter with SRX
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
3. Change your WEP key regularly
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.
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
31
Wireless-G Notebook Adapter with SRX
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
32
Wireless-G Notebook Adapter with SRX
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
33
Wireless-G Notebook Adapter with SRX
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
34
Wireless-G Notebook Adapter with SRX
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
fixed domain name (e.g., www.xyz.com) and a dynamic IP address.
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
35
Wireless-G Notebook Adapter with SRX
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
36
Wireless-G Notebook Adapter with SRX
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
37
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
Appendix E: Specifications
Model
WPC54GX
Standards
IEEE 802.11g, IEEE 802.11b
LEDs
Power, Link
Transmit Power
20dBm for Wireless-B/14dBm for Wireless-G
Protocols
802.11b: CCK, QPSK, BPSK; 802.11g: OFDM
Security Features
WEP, WPA (AES, TKIP), 802.1x
WEP Key Bits
64, 128 Bit
Dimensions
4.80" x 2.13" x 0.39" (122 mm x 54 mm x 10.0 mm)
Unit Weight
1.76 oz. (0.05 kg.)
Certifications
FCC, IC-03, CE
Operating Temp.
32ºF to 140ºF (0ºC to 60ºC)
Storage Temp.
-13ºF to 149ºF (-20ºC to 65ºC)
Operating Humidity
15-95% Maximum, Non-Condensing
Storage Humidity
95% Maximum, Non-Condensing
Appendix E: Specifications
41
Wireless-G Notebook Adapter with SRX
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
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
Wireless-G Notebook Adapter with SRX
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.
Vous pouvez contacter l'Autorité de Régulation des Télécommunications (http://www.art-telecom.fr) pour de plus
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
Wireless-G Notebook Adapter with SRX
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
Wireless-G Notebook Adapter with SRX
Appendix H: Contact Information
Need to contact Linksys?
Visit us online for information on the latest products and updates
to your existing products at:
http://www.linksys.com or
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:
Don't wish to call? You can e-mail us at:
800-326-7114
support@linksys.com
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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