Please advice , My customer using MWG 6.9 to access outside corporate/internet. currently on policy setting to allow yahoo messanger and block facebook(web/chat). my customer report me that now yahoo mess can connect to facebook chat and many of them already using it. my question how to block facebook chat that linked to yahoo messanger.
please have a look into the access.log and try to see what URL the messenger is connecting to. My local messenger (not Yahoo) provides this feature as well, and talks to "chat.facebook.com". If I block this URL, access is no longer allowed.