
Introduction
valid employee while denying service to the war-driver sitting in the company parking lot
has become extremely important, creating a demand for the first two A’s of AAA (authen-
tication and authorization) technology even in an industrial setting.
Because the AAA requirements on 802.11 networks evolved rather than being incorporated
from the beginning, there has been an ad hoc approach to adding this technology to 802.11
networks. An early brute force, nonscalable approach to admission control in 802.11 access
points was to program statically an exhaustive list of every MAC address that would be
permitted to use the access point. This