Wireless Security.pdf - PDF Archive

Implementing Basic Wireless Security 473
Figure 20.8 : Generating WEP keys
Leave the Mode set to HEX and choose a strong passphrase to generate your keys. A
strong passphrase consists of a combination of upper- and lowercase letters, numbers, and
special characters. Once chosen, enter your passphrase in the Passphrase text box and
click Generate . This will create four WEP keys. See Figure 20.8 .
Since four keys are generated, you need to decide which one your client should use. Set
the Default TX Key to the number (1–4) that you want to use on your network. Once you
have generated your WEP keys and chosen the key to transmit, click Apply to save your
settings.
Information on configuring your client software is provided later in the “ Configuring
Security Features on Wireless Clients ” section of this chapter.
20.3 Filtering by Media Access Control (MAC) Address
Once you have set a unique SSID, disabled SSID broadcast, and required the use of WEP
encryption, you should take at least one more step: filtering by Media Access Control
(MAC) address. To enable MAC address filtering on the Linksys WAP11, from the main
setup screen click the Advanced tab to display the Advanced wireless settings ( Figure 20.9 ).
Click the Enabled radio button to enable MAC address filtering. Next, select the radio
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