Authentication across multiple domains

Posted on 2013-02-07
Last Modified: 2013-02-14
We have two separate domains, connected via VPN, and I'm wanting to authenticate on one server with users from the other domain. We're running a web server which would need to authenticate in IIS. I'm hoping this would be possible. We cannot join the domains as they are two separate legal entities.
Question by:andrew_2706
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LVL 38

Expert Comment

by:Justin Smith
ID: 38865473
Is this a SharePoint question?  Is there a trust betwen the domains?  Have you talked about ADFS?

Author Comment

ID: 38865521
We intend to install SharePoint and to also try and authenticate for that service too. I do not know how to implement a trust between the domains and have not looked at ADFS - what would you suggest?
LVL 38

Expert Comment

by:Justin Smith
ID: 38865612
If you are wanting users to authenticate with their domain credentials, you will have to create a trust between the domains (possible since you have VPN connection), or implement an ADFS solution (allows you to use internet connection between the sites).
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Author Comment

ID: 38865720
That sounds like exactly what we need to do, how difficult is it to set up the trust between the two domains? we have admin access to both DC's
LVL 38

Expert Comment

by:Justin Smith
ID: 38866115
Not that hard.  Just do some Google searches.  If you have a sys admin team, it's a fairly common task that they should know how to do.
LVL 18

Accepted Solution

sarang_tinguria earned 500 total points
ID: 38866919
Create conditional forwarders in both of your forest DNS server pointing to each other

How to Configure DNS Conditional Forwarding in Windows Server ...

Then follow below link to create trust

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