My company will implement WPA2-Enterprise as wireless user authentication method. We already use Active Directory so we want use that AD as authentication service for freeradius too. I already config the freeradius based on these link :

http://wiki.freeradius.org/guide/FreeRADIUS-Active-Directory-Integration-HOWTO#Configuration-of-clients.conf and this link
http://deployingradius.com/documents/configuration/active_directory.html
https://www.eduroam.us/node/44