http://www.chinaunix.net/salon_doc/How_to_Configure_PEAP_on_FreeRADIUSnew.pdf
brandon.penglase.net/index.php?title=Setup_FreeRADIUS_for_802.1x_PEAP/MSCHAPv2_Auth_against_OpenLDAP
http://www.tldp.org/HOWTO/8021X-HOWTO/freeradius.html
http://wiki.freeradius.org/guide/FreeRADIUS-Active-Directory-Integration-HOWTO