I have 4 sites (HQ and 3 branches) each running Proxy Server 2. Single CPU at each location. They each have independent access to the Internet but are connected to one another by Frame Relay.. If I want to manage all of them and set up an enterprise policy from the HQ location what do I need to purchase for all the sites? Just the Enterprise Edition? Enterprise and 3 Standard Editions?
You need to buy 4 Enterprise Edition Licenses.
FAQ answered by Tom Shinder. Check out his tutorials, tips and books about ISA Server: http://www.isaserver.org/shinder/