Quick Reference Guide to Configuring ISA Server Interfaces Part 1 - Configuring the Internal Interface.
“How do I configure the ISA Server interfaces?”
There are many opinions on how the ISA Server interfaces should be configured. Many of them are right; some of them are wrong. If you want the definitive guide on how to configure DNS for ISA Server, check out Jim Harrison’s seminal article on ISA Server and DNS at http://www.isaserver.org/pages/tutorials/dns-4-isa.htm.
Configuring ISA Server 2000 : Building Firewalls for Windows 2000
By Deb and Tom Shinder
Nothing significant you need to deal with here. Note that there are no gateways configured. This is as it should be.
Click on the DNS tab.
If you need to add more internal network DNS servers, you can do it here.
You should always have a WINS server on the internal network. Even though Windows 2000 putatively does not require NetBIOS and WINS, there are just too many Windows features that are dependent on NetBIOS name resolution. Therefore, unless you’ve completely sanitized your network against NetBIOS, tested your design, and confirmed that everything works without NetBIOS, you should include a WINS server.