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AT-TQ2403 Management Software User's Guide 67
Field Description
Authentication The authentication algorithm defines the method used to determine whether a client
station is allowed to associate with an access point when static WEP is the security
m
ode. Specify the authentication algorithm you want to use by choosing one of the
following options:
Open System
Shared Key
Note: You can also select both the Open System and Shared Key checkboxes.
Open System: This authentication allows any client station to associate with the
access point whether that client station has the correct WEP key or not. This is
algorithm is also used in plaintext, IEEE 802.1x, and WPA modes. When the
authentication algorithm is set to Open System, any client can associate with the
access point.
Note that just because a client station is allowed to associate does not ensure it can
exchange traffic with an access point. A station must have the correct WEP key to be
able to successfully access and decrypt data from an access point, and to transmit
readable data to the access point.
Shared Key: This authentication requires the client station to have the correct
WEP key in order to associate with the access point. When the authentication
algorithm is set to Shared Key, a station with an incorrect WEP key will not be able
to associate with the access point.
When you select both Open System and Shared Key authentication algorithms:
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.
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.