Thank you Fajar, it works. i included sqlcounter.conf in module section of radiusd.conf. Then I inserted into radcheck a user with the attributes User-Password:="password" Service-Type:="Framed-User" Max-Daily-Session:="240" Debug logs. rlm_sqlcounter: (Check item - counter) is less than zero rlm_sqlcounter: Rejected user student, check_item=240, counter=242 modcall[authorize]: module "dailycounter" returns reject for request 15 modcall: leaving group authorize (returns reject) for request 15 Invalid user (rlm_sqlcounter: Maximum hourly usage time reached): [student] (from client C2960_NOC_LAN1 port 50009 cli 00-1E-33-D5-7A-68) Delaying request 15 for 1 seconds Finished request 15 Going to the next request Waking up in 6 seconds... rad_recv: Access-Request packet from host 10.1.5.4:1645, id=81, length=197 Sending Access-Reject of id 81 to 10.1.5.4 port 1645 Reply-Message = "Your maximum hourly usage time has been reached" Once again thank you Pamela Pomary ICTD University of Ghana Email: ppomary@gmail.com