Configuring SSID Settings 103
5 Configuring Access Point Settings
Static WEP Rules
If you use Static WEP, the following rules apply:
• All client stations must have the Wireless LAN (WLAN) security set to WEP and all
clients must have one of the WEP keys specified on the AP in order to de-code AP-to-
station data transmissions.
• The AP must have all keys used by clients for station-to-AP transmit so that it can de-code
the station transmissions.
• The same key must occupy the same slot on all nodes (AP and clients). For example if the
AP defines
abc12 key as WEP key 3, then the client stations must define that same string
as WEP key 3.
• Client stations can use different keys to transmit data to the access point. (Or they can all
use the same key, but this is less secure because it means one station can decrypt the data
being sent by another.)
• On some wireless client software, you can configure multiple WEP keys and define a
client station “transfer key index”, and then set the stations to encrypt the data they
transmit using different keys. This ensures that neighboring APs cannot decode each
other’s transmissions.
• You cannot mix 64-bit, 128-bit, and 152-bit WEP keys between the access point and its
client stations.
Using WPA/WPA2 Personal or Enterprise
WPA and WPA2 are Wi-Fi Alliance IEEE 802.11i standards, which include AES-CCMP and
TKIP mechanisms. The WPA/WPA2 Personal employs a pre-shared key to perform an initial
check of credentials. The WAP/WPA2 Enterprise uses a RADIUS server to authenticate users.
WEP Key Length Specify the length of the key by clicking one of the radio buttons:
•64 bits
•128 bits
•152 bits
Tx The Transfer Key Index indicates which WEP key the access point uses to
encrypt the data it transmits. To select a transfer key, click the button located
between the key number and the field where you enter the key. In Figure 45,
the transfer key is 3.
WEP Keys You can specify up to four WEP keys. In each text box, enter a string of
characters for each key. These are the RC4 WEP keys shared with the
stations using the access point.
Use the same number of characters for each key. The number of keys you
enter depends on the Key Type and Key Length. The following list shows the
number of keys to enter in the field:
• 64 bit—ASCII: 5 characters; Hex: 10 characters
• 128 bit—ASCII: 13 characters; Hex: 26 characters
• 152 bit—ASCII: 16 characters; Hex: 32 characters
Each client station must be configured to use one of these same WEP keys in
the same slot as specified here on the AP.
Table 13. Static WEP
Field Description
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