SMC Networks SMC2555W-AG - Manual (Page 68)

System Configuration
5-12
Authentication
Wireless clients can be authenticated for network access by
checking their MAC address against the local database
configured on the access point, or by using the IEEE 802.1x
network access authentication protocol to look up their MAC
addresses on a RADIUS server. The 802.1x protocol can also be
configured to check other user credentials such as a user name
and password.