Dear Friends, We have customized module (lib) written for freeRadius version freeradius-server-2.2.0. The same code can be reused for latest version of free Radius (say 3.0.9). Provided all basic message structures are remain same (in both versions of free Radius). One basic questions, We were having child hung issue at free Radius due to slow response from external module. once free Radius server (version 2.2.0) goes to child hung state then we have to restart the server (though the external module resumed after 1-2 minutes). Is there any throttling done at Free Radius server (latest version 3.0.9)? so that when external module response is slow, Radius server would not fill the queue with incoming messages (from NAS). i.e. taking messages into queue and run into child hung issue. It uses throttling to have control over pending request queue when there is a slowness in the external system and queue size increases (since NAS is flooding the radius server). Thanks a lot for your response in advance. -- Regards, Srithar Durairaj Alternate Mail I.D: srijeevadurai1@yahoo.co.in Mobile: +919886251852