[VPN] Cannot find domain controller

[Russell Sakne]

Hi all, I hope you can help.

Having followed the advice of the very helpful people on this list, we had 
our remote site with its PIX-to-PIX VPN working fine, using WINS to find 
network resources here at home base. Then "something happened" and the 
remote machines can no longer find any domain controllers for our domain. 
They can connect to other servers (including our Terminal Serivces machine 
and our web proxy), but the primary machines they *need* to connect to are 
a PDC and a BDC and they can't see them at all. Weirdly, a "find" on the 
other BDC *does* get a result, which suggests they should be able to 
approach that machine for authentication.

I've checked their DNS settings haven't changed, and "ping" tests resolve 
the correct IP addresses (though we've never been able to get an ICMP 
packet through either PIX in any circumstances...). 

We wondered if the machine accounts downthere had somehow managed to 
expire, so have deleted them from the Domain and then both attempted to 
created them at a workstation rename-rejoin and manually to allow the 
workstation to reconect as that name, to no avail.

Can anyone offer any clues or informed speculation as to what might have 
gone wrong? We're wondering about the nature of an NT4 "Where's a DC" 
call. Is there some setting on the VPN that would refuse passage to such a 
multicast-thing which we may have inadvertently set?

Hopefully yours
RussellS



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