What is the proper way to set up DNS for my Firewall?
Scenario: I have a DNS server on my internal LAN, IP 192.168.10.9
I will have an ISA firewall set up with 192.168.10.10 on the internal interface and 11.x.4.2 on my external interface. This machine is also running DNS and is referenced by NetworkSolutions as my primary name server.
This is an NT 4.0 Domain and the ISA 2000 server and DNS will be running on Win2K. My internal DNS is running on NT 4.0.
I am trying to get the DNS structure working correctly before I install ISA.
How should I set up DNS on this server to accurately resolve internal names for internet requests such as mail, metaframe, web, etc.? How should I set up DNS on this server to accurately resolve external fqdn's for internet sites? Does my external interface need to use my ISP's DNS servers? Does my internal interface need to use the local DNS server or the DNS server at 192.168.10.9? Do I need to set up forwarding from one of these servers to another? Which DNS server should my desktop clients be querying; the internal or firewall DNS?