ratna kumar wrote: > i wann write a plugin for free radius please help me the procedure The link below is a good start. http://www.freeradius.org/radiusd/doc/module_interface You could learn from the module 'rlm_example', too. http://www.freeradius.org/cgi-bin/cvsweb.cgi/radiusd/src/modules/rlm_example/ -- Nicolas Baradakis