OK, I am not sure if this is possible, but I am trying to query the FreeRadius MySQL radacct table, to get a general idea of who has been authenticated, and is still logged in, and if possible who has multiple logins with the same username.
I am not sure how to write the query to do that... so far, the radacct table is about 4billion lines and growing...
Can anyone either explain how i can do this, or point me in the right direction?
basically, what I am looking to do, is search the MySQL table, where the sessionid doesn't have a matching sessionid.
Thanks in advance