I am going to have a network something like this
Internet ----------Hardware Firewall-----------------Internal Network (10.0.20.0)
I will be placing ISA 2004 in DMZ. I want to allow the users to have internet access based on Domain Username. Do I need to have 2 NIC cards (1 for DMZ & 1 for Internal) on ISA server or only 1 will do. If I use only one, then how the clients in Internal Network will communicate with the ISA Server? WHAT PORTS SHOULD BE OPEN on the firewall for Internal & External networks communication?
Do not want to make ISA server as firewall and place the DMZ in between 2 firewalls.
Any other suggestions will be highly recommended.