Hi Alan, Thanks for your advice. Is it possible to configure the DHCP module in freeRadius in such a way that at first the DHCP will gave ip address of from one subnet like 192.168.1.X and afterwards after authentication is done then DHCP will force to change the IP address to different IP subnet like 192.168.2.X. I am planing to write a small module in Java . Whn a device attached to Access Point. It will get IP from192.168.1.X and all the request from this ip range will go to the java program. It will get the user name and password from the user and then do the authentication with the Radius server. Afrer authentication is done then the DHCP server will change IP address of the that device. May be i am making it more complex. Thanks Raihan -- View this message in context: http://freeradius.1045715.n5.nabble.com/How-to-configure-FreeRadius-as-Capti... Sent from the FreeRadius - User mailing list archive at Nabble.com.