The purpose of this article is to provide information on how to include client hostname information in the Access Logs of a ProxySG.
By default, the ProxySG has an access log called "main". This log doesn't contain information on the client's hostname obtained by the proxy through a reverse DNS lookup.
The "main" Log Format can be modified to include the hostname field, which is "x-cs-dns".
The full list of available log fields can be found in the CPL (Code Policy Language) Reference Guide of your current SGOS version within Symantec's Documentation site.