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59
Appendix B: Wireless Security
Security Threats Facing Wireless Networks
Wireless-G Broadband Router with 2 Phone Ports
WPA Personal
. If you do not have a RADIUS server, Select the type of algorithm, TKIP or AES, enter a
password in the Pre-Shared key field of 8-64 characters, and enter a Group Key Renewal period time between
0 and 99,999 seconds, which instructs the Router or other device how often it should change the encryption
keys.
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.) First, select the type of WPA algorithm,
TKIP
or
AES
. Enter
the RADIUS server’s IP Address and port number, along with a key shared between the device and the server.
Last, enter a Group Key Renewal period, which instructs the device how often it should change the 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.) First, enter the RADIUS server’s IP Address and port number, along
with a key shared between the device and the server. Then, select a WEP key and a level of WEP encryption,
and either generate a WEP key through the Passphrase or enter the WEP key manually.
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.
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60
Appendix C: Upgrading Firmware
Wireless-G Broadband Router with 2 Phone Ports
Appendix C: Upgrading Firmware
The Router's firmware is upgraded through the Web-based Utility's Administration tab. Follow these instructions:
1.
Download the firmware from Linksys's website at
www.linksys.com
.
2.
Extract the firmware file on your computer.
3.
Open the Router’s Web-based Utility, and click the
Administration
tab.
4.
Click
Firmware Upgrade
, and the
Upgrade Firmware
screen will appear.
5.
Enter the location of the firmware's file or click the
Browse
button to find the file.
6.
Then click the
Upgrade
button and follow the on-screen instructions.
Figure C-1: Upgrade Firmware
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61
Appendix D: Windows Help
Wireless-G Broadband Router with 2 Phone Ports
Appendix D: Windows Help
Almost Linksys 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 the 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.
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62
Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter
Windows 2000 or XP Instructions
Wireless-G Broadband Router with 2 Phone Ports
Appendix E: Finding the MAC Address and IP Address for
Your Ethernet Adapter
This section describes how to find the MAC address for your computer’s Ethernet adapter so you can use the MAC
filtering and/or MAC address cloning feature of the Router. You can also find the IP address of your computer’s
Ethernet adapter. This IP address is used for the Router’s filtering, forwarding, and/or DMZ features. Follow the
steps in this appendix to find the adapter’s MAC or IP address in Windows 2000, XP or Vista.
Windows 2000 or XP Instructions
1.
Click
Start
and
Run
. In the
Open
field, enter
cmd
. Press the
Enter
key or click the
OK
button.
2.
At the command prompt, enter
ipconfig /all
. Then press the
Enter
key.
3.
Write down the Physical Address as shown on your computer screen (Figure E-1); it is the MAC address for
your Ethernet adapter. This appears as a series of numbers and letters.
The MAC address/Physical Address is what you will use for MAC address cloning or MAC filtering.
The example in Figure E-1 shows the Ethernet adapter’s IP address as 192.168.0.100. Your computer may
show something different.
Windows Vista Instructions
1.
Click
Start
. Enter
cmd
in the
Start Search
field. Press the
Enter
key.
2.
At the command prompt, enter
ipconfig /all
. Then press the
Enter
key.
3.
Write down the Physical Address as shown on your computer screen (Figure E-1); it is the MAC address for
your Ethernet adapter. This appears as a series of numbers and letters.
Figure E-2: MAC Address Filter List
Figure E-1: MAC Address/Physical Address
Note:
The MAC address is also called the Physical Address.
The Wizard is not compatible with Mac
®
computers. Refer to Chapter 4: Connecting the Wireless-G
Broadband Router with 2 Phone Ports and Chapter 5: Configuring the Wireless-G Broadband Router
with 2 Phone Ports.
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63
Appendix E: Finding the MAC Address and IP Address for Your Ethernet Adapter
For the Router’s Web-based Utility
Wireless-G Broadband Router with 2 Phone Ports
The MAC address/Physical Address is what you will use for MAC address cloning or MAC filtering.
The example in Figure E-1 shows the Ethernet adapter’s IP address as 192.168.0.100. Your
computer may show something different.
For the Router’s Web-based Utility
For MAC filtering, enter the 12-digit MAC address in this format, XXXXXXXXXXXX, WITHOUT the hyphens. See
Figure E-2.
For MAC address cloning, enter the 12-digit MAC address in the
MAC Address
fields provided, two digits per field.
See Figure E-3.
Note:
The MAC address is also called the Physical Address.
Figure E-3: MAC Address Clone
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