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If I have a Windows 2008 or 2003 domain controller in a remote office (and its own AD site) that gets stolen, what sorts of things should I do to my main network or domain (if anything) in response?

The VPN is keyed off of the IP address of the network so there's nothing that would allow them to gain remote access to the primary network. I assume, at a minimum, I'd want everyone to change their passwords, but what else?

9

Microsoft has some recommendations for what to do if a read-only DC is stolen. I don't think they go far enough, though. I lean more toward the approach described here. The big enchilada IMHO is to make sure that you immediately force password changes for all domain accounts; that will go a long way towards reducing the impact.

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    +1 - I take Joe's opinions (the guy Paul linked to) under very serious advisement and I'd recommend you do as well. I recall that post going by in my feed reader. I just checked and I see that I "starred" it there. It's good stuff. – Evan Anderson Jul 20 '09 at 20:37
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Like the person said, change all passwords immediately. Also use NTDSUTIL and forcibly remove all traces of it from your AD. It may sound a bit extreme, but changing the site in question to a different IP subnet might not be a bad idea too.

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If you are using a pretty standard password policy then your users change their passwords every 30 days, so that shouldnt be a problem.

I'd change all the Administrator passwords, and like you already have: make sure that the VPN isnt re-initated from a rogue site.

Other than that I don't think there is much to do.

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