I am looking at having to span an NT domain across multiple physical locations using a WAN. The WAN consists of T1's and T3's for our corporate backbone. The PDC will reside in one location with every other location having a BDC. I need to be able to replicate WINS, map drives, share files, authenticate users ... all the usual stuff as it would work inside a LAN. However, I am faced with having to configure routers and firewalls.

Does anyone have experience doing this? I am looking at opening ports 42, 53, 135, 137, 138, and 139. Microsoft makes reference to all ports above 1024 needing to be open for RPC communication, but if I open up 137-139 and enable NETBios over TCP, will it work?

Your help would be greatly appreciated!

Thank you,
Brian