I have configure free radius to authenticate users (using LDAP as back-end DB) it worked very well but there is a logging probem: the logged-in log:(radius.log) Sat Aug 16 13:53:29 2014 : Auth: Login OK: [Mark/<via Auth-Type = EAP>] (from client private-network-1 port 0 via TLS tunnel) Sat Aug 16 13:53:29 2014  : Auth: Login OK: [Mark/<via Auth-Type = EAP>] (from client private-network-1 port 5 cli F0-4D-A3-B1-34-16) Accounting: Sat Aug 16 14:02:56 2014    NAS-IP-Address =    .    .    .    .    .    . why the start-time record is different from the Timestamp in radius.log, or in other words when accounting logs start? another problem is when I logout as "Mark" and login as "Mike", it logs it successfully in radius.log: Sat Aug 16 13:53:29 2014 : Auth: Login OK: [Mark/<via Auth-Type = EAP>] (from client private-network port 0 via TLS tunnel) Sat Aug 16 13:53:29 2014  : Auth: Login OK: [Mark/<via Auth-Type = EAP>] (from client private-network port 5 cli F0-4D-A3-B1-34-16) Sat Aug 16 14:06:26 2014 : Auth: Login OK: [Mike/<via Auth-Type = EAP>] (from client private-network port 0 via TLS tunnel) Sat Aug 16 14:06:26 2014  : Auth: Login OK: [Mike/<via Auth-Type = EAP>] (from client private-network port 5 cli F0-4D-A3-B1-34-16) but it didn't log any thing in raddact that according to Mike, even after a while? what should I do?