User's Manual Part 1

SCP-LPS20x-011-012-01H December 20, 2004
68 ADC Telecommunications, Inc.
WIRELESS PROTECTION PARAMETERS
Select the type of protection you want to use for the wireless network.
WPA
This option enables support for users with WPA client software.
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.
802.1x
This option enables support for users with 802.1x client software. The LPS-20x supports 802.1x client software that
uses EAP-TLS, EAP-TTLS, and PEAP.
Note that all authentication tasks are handled by the LPS-20x and not the wireless client station. This means that the
RADIUS server must be reachable via the downstream port.
RADIUS profile
Communications with the RADIUS server is handled via the access controller. This setting cannot be changed.
Dynamic WEP encryption
Enable the use of dynamic WEP keys for all 802.1x sessions. Dynamic key rotation occurs on key 1, which is the
broadcast key. Key 0 is the pairwise key. It is automatically generated by the LPS-20x.
Key length and key change interval are set in the Dynamic keys box.