Anyone out there know what ports I need to block on a Linksys router in order to force use of the existing proxy.

I'm too lazy to go Policy Editing crazy on a mixed bag of 98 and XP machines right now, and a collegue of mine sent me something on what ports to block to disallow surfing, yet still allow it to be a default gateway for email.

However, I don't have the info available to me right now.

TIA