How to get two seperate remote domain controllers with same IP to work?

Posted by Mr. Mister on Server Fault See other posts from Server Fault or by Mr. Mister
Published on 2011-03-01T00:02:52Z Indexed on 2011/03/12 16:12 UTC
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Filed under:

vpn

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cisco

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domain-controller

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ip-conflict

Hi,

I have a VPN setup between multiple locations. Between each location and the central point (me), is a trust between our domain controllers. It all works great..

A new location wants to join, but their AD controller is using an IP address that is already in use by another AD in a separate location.

Neither locations can change their IP addresses, but apparently there is a NAT rule that could be used to allow communication between each AD controller? The central site has a Cisco 5510 firewall which could perform the NAT, but I am unsure of the logic behind the NAT rule.

Is anyone able to explain or help out? Thanks.

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