Hi All, I am trying to configure the "Session Timeout" in Freeradius , so that it can follow the text below from specs. https://www.ietf.org/rfc/rfc3580.txt When sent in an Access-Challenge, this attribute represents the maximum number of seconds that an IEEE 802.1X Authenticator should wait for an EAP-Response before retransmitting. In this case, the Session-Timeout attribute is used to load the suppTimeout constant within the backend state machine of IEEE 802.1X I tried changing the sites-available/default and added the "Session-Timeout := 7200" in below section, but still i can't see "Session-timeout" parameter in "Access Challenge" request. After doing that I restarted the freeradius . I am using freeradius 3.0.16. Is it the correct path, i am following? post-auth { # # If you need to have a State attribute, you can # add it here. e.g. for later CoA-Request with # State, and Service-Type = Authorize-Only. # # if (!&reply:State) { # update reply { # State := "0x%{randstr:16h}" # } # } # # For EAP-TTLS and PEAP, add the cached attributes to the reply. # The "session-state" attributes are automatically cached when # an Access-Challenge is sent, and automatically retrieved # when an Access-Request is received. # # The session-state attributes are automatically deleted after # an Access-Reject or Access-Accept is sent. # update { &reply: += &session-state: Session-Timeout := 7200 } Sumant