A policy for specifying cookie persistence in authentication is a new feature available starting in SGOS 18.104.22.168.
It's now possible to now control cookie persistence during user authentication. The following CPL action was added:
Please reference the 6.7.3.x Release Notes which can be downloaded at https://support.symantec.com > Downloads > Network Protection (BlueCoat) Downloads - and navigate to the 6.7.3 release notes for the Proxy or Advanced Secure Gateway for more information on this.
Also, view the "What's New" section in the following article on 22.214.171.124: SGOS 126.96.36.199 (GA)
The following example specifies that persistent cookies are used in requests to ‘mycompany’ web pages. Users do not have to log in again on other ‘mycompany’ web pages after the user is already authenticated.