Dear List Members, i have working setup of FreeRadius 2x (freeradius-2.1.12-4.el6_3.x86_64) including "rlm_sqlcounter" (Max-Daily-Session). User are logged off alright when "Max Session Timeout" is reached. But users can re login to gain access. The username and passwords are for hotspot. We do not want the username and password to work again once it has been used. For example: prepaid voucher (MySQL username & password) has 1 hour access. User should be able to use sum of one hour, either continuously once they are logged in or in parts (30min today & 30min tomorrow so on) username & password must never work for more than 1 hour to access our network. i am bit confuse attribute to use, i would grateful if someone can advice the correct attribute to use for the purpose. Thanks Hi Members, after working for four days still unable to make it work. Alan Buxey advised me to implemented "Expiration" Attribute. Expiration works just fine. If i specify any date (01 Sep 2013). But i am working to expire username after certain amount of time, such as one hour (not one hour after first log in) sum of one hour internet used either by one time login or multiple logins (30Min morning & 30min afternoon etc..). i understand i would need sql_counter to achieve. I am trying but not working. my configuration. 1.) Created Counter: sqlcounter expiration { count-attribute = "Acct-Session-Time" counter-name = "Max-Allowed-Session" check-name = "Expiration" sqlmod-inst = "sql" key = "User-Name" reset = "never" query = "SELECT IFNULL(TIME_TO_SEC(TIMEDIFF(NOW(), MIN(AcctStartTime))),0) FROM radacct WHERE UserName='${key}' ORDER BY AcctStartTime LIMIT 1;" 2.) Added in radiusd.conf instantiate { expiration } 3.) Added under auth section: authorize { expiration } When we expire account with expiration attribute which kind of value can we define to the attribute so that account gets expire after 1 hour of internet use (using sql counter). Date format is working alright (01 Sep 2013). Thanks everyone for attending to this material.