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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 decode
AP-to-station data transmissions.
The AP must have all keys used by clients for station-to-AP transmit so that it can
decode 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.
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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.
You must then set all client stations to use WEP and provide each client with one of the
slot/key combinations you defined on the AP.
For this example, we’ll set WEP key 1 on a Windows client.
(Please see the next page.)
Setting the AP Transfer Key on the Access Point
Field
Description
Configuring Security
Client stations configured to use WEP in
shared key mode must have a valid WEP key
in order to associate with the access point.
Client stations configured to use WEP as an
open system (shared key mode not enabled)
will be able to associate with the access point
even if they do not have the correct WEP key.
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