Here’s an article about how to set up 801.1x with
Active directory with a Mac client as a supplicant
The idea here is to configure 802.1x authentication on a network switch in such a way as to leverage the existing authentication infrastructure provided by Active Directory. Like it or not, Active Directory is a widely deployed directory service and leveraging it where we can will certainly provide an advantage. This process uses RADIUS to provide an interface between a Cisco Catalyst 3560G switch (the 802.1x authenticator in this scenario) and Active Directory. I could only test Mac OS X as the client (or 802.1x supplicant), but I’m confident that the configuration will work equally well with Windows XP Professional.
