User Manual

Psion Teklogix 9160 Wireless Gateway User Manual 129
Chapter 13: Configuring Security
Static WEP
13.2.2.1 Rules To Remember For Static WEP
• 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
abc123 key as WEP key 3, then the client stations
must define that same string as WEP key 3.
• On some wireless client software (like Funk Odyssey), 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.
13.2.2.2 Example Of Using Static WEP
For a simple example, suppose you configure three WEP keys on the access point.
In our example, the Transfer Key Index for the AP is set to 3. This means that the
WEP key in slot “3” is the key the access point will use to encrypt the data it sends.
Figure 13.7 Setting The AP Transfer Key On The Access Point