I'm facing a small problem when working with ISA 2004 on SBS 2003. I know that ISA creates an Internet Users group and all my users are a member of this group. I'm trying to set my network in such a way that only specific users have access to internet and everyone has access to only POP and SMTP.
To do that, I created a new Security Group called Mail Users, and I removed all the users I did not want to give internet access to from Internet Users and moved them to Mail Users.
I then created a rule on ISA to Block all HTTP and HTTPS requests from Mail Users, and created a rule to Allow POP right before that. See screenshot attached.
However, as soon as I do that, ISA blocks the Internet for Internet Users as well, so no one has internet working.
Does that make sense?
Do let me know what you think!
Thanks a lot