maybe you can't get what you want. i think the begin is reading RFC2865.
and then you can download the freeradius' source code. reading src/README, FAQ. etc. doc/README, aaa.txt, configurable_failover, module_interface, processing_users_file. and then you can practise with special rlm_XXX modules(google it for some chinese article), watching output of radiusd -X, watching the code, ask to this list. just in my option. :) good luck. Hello World! = = = = = = = = = = = = = = = = = = = = ylei [EMAIL PROTECTED] - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html