I have found the following URL very useful: http://www.missl.cs.umd.edu/~adam/802/
jsl -- John Lindsay - Engineering Services Manager Internode Professional Access ph +61 8 8223 2999 fx +61 8 8223 1777 31 York St Adelaide, PO BOX 284 Rundle Mall SA 5000 - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html