SWG Authentication without log-in page

Hi experts!

 

Is there a way for a user to authenticate and determine the AD Group a user belongs to without going through the log-in page

 

Example, a user will log-in on its computer using the domain,the proxy IP will be then set to the network. Can F5 get the credentials and determine the AD Group using this method?

 

Thank you for the answers, very much appreciated.