Setting up a geographically distant domain controller and DNS using Microsoft server technologies

Posted on 2008-06-22
Last Modified: 2010-04-21
I wish to set up a domain controller and DFS on a system that is located 1000 miles south of my primary server installation.

I am wondering a few things:
1) What the prerequisites are in terms of the DNS "zone" the server will fit into? Does it need to be a "public" zone or set up in a particular way?

2) Does DFS replication demand that the replicate-ee be a DC?

3) Are there any common connectivity failures I should watch out for to make this work?

Question by:kennethfine
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Expert Comment

ID: 21843703
The fact that the machines are geographically seperate makes little difference, assuming you have physical connectivity between the sites. There is no need to create a new domain and DNS is no different, you can use AD Integated DNS (the default) by simply insalling DNS once you have promoted the the new DC, DNS will then replcate with Active Directory.

What you do need to do is use a different subnet for each location, define the subnets in AD Sites and Services and create a new site for tthe new romote location, and then assocuate each site with its subnets(s).

You sould also make the new DC a global catalog server, once ith new DC is placed in the remote site all the clients in the site should be configured to use this as their preferred DNS server, they will then authenticate with this DC.

Author Comment

ID: 21843723
Thanks, KCTS.
If the DC at site A is behind a firewall, how will it communicate properly with the DC at site B? Is this a simple q of port forwarding being set up on the firewall, or does the communcation happen by some other means?
LVL 70

Accepted Solution

KCTS earned 500 total points
ID: 21843736
Opps missed the other 2 bits..

DFS - no machines do not have to be DCs

Conectivity, if you set this up as indicated and make the new DC both DNS and Global Catalog server, then providing clients on each site use their local DC as the preferred DNS server they will be able to authenticate and log on even if the link between the sites is down
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Author Comment

ID: 21843742
Ah, great. Thanks for the help, this is exactly waht I was looking for, KCTS.

Author Closing Comment

ID: 31469638
many thanks KCTS!
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Expert Comment

ID: 21843744
You coould have port forwarding - its a lot of ports though, Why not have a site-to site VPN between to two DCs

Author Comment

ID: 21843750
Please see my next question on site-to-site VPN.  This knowledge is key I think.

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