User's Manual Part 2

December 20, 2004 SCP-LPS20x-011-012-01H
ADC Telecommunications, Inc. 111
WIRELESS PROTECTION PARAMETER
The parameters that are visible depend on the settings you make for the Use dynamic key rotation.
Key Source
This option determines how the TKIP keys are generated.
RADIUS: The LPS-20x obtains the MPPE key from the RADIUS server. This is a dynamic key that changes each
time the user logs in and is authenticated. The MPPE key is used to generate the TKIP keys that encrypt the
wireless data stream. Select the appropriate RADIUS server.
WPA sessions are terminated by the LPS-20x. This means that the LPS-20x handles all authentication tasks and
must communicate with the RADIUS server or access controller to validate login credentials. The LPS-20x sends
this authentication traffic on the downstream port. Therefore, the RADIUS server or access controller must be
reachable via this port.
Preshared Key: The LPS-20x uses the key you specify in the Key field to generate the TKIP keys that encrypt the
wireless data stream. Since this is a static key, it is not as secure as the RADIUS option. Specify a key that is
between 8 and 64 characters in length. It is recommended that the preshared key be at least 20 characters long,
and be a mix of letters and numbers.
RADIUS Profile
Only valid value is Access Controller.