Block websites in Win2003 SBS?

[kyuuzo]

I'd like to block access to all websites except for a specified few (essentially a whitelist) using a Group Policy in Win2003 Small Business Server. Can anyone give me some brief tips on doing this?

[tguy]

GPO's are not really the way to go about doing what you are trying to do. I would suggest installing the ISA server portion of SBS and using ISA to filter out websites you don't want people to visit.