Hello, I'm trying to figure out how to prevent a user from initiating multiple sessions. For example, if username jdoe logs in and is actively using resources I do not want user jdoe to initiate a second session. Some of my users have access to resources others do not so I am trying to prevent username sharing. Does anyone know how to tell squid to block logins from a user that is already logged in? I know squid has the auth_param basic credentialsttl ** minutes item, but how do you check if a credential is already in use? Thanks!