Disable Cross-Domain Logins

The organization has one parent domain and three child domains.
In these domains, there are a few location specific "generic" logins for multiple users to share.
How do I disable logins between child domains on a specific set of computers. For example: If Computer1 is joined to child DomainA... how do I disable users on a Computer2 in child DomainB from logging in using credentials in DomainA? Basically, I don't want them to be able to hit the drop-down box and choose a domain other than the one the PC is joined to.

Thanks,
sometechguyAsked:
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LauraEHunterMVPCommented:
You cannot remove a partial list of trusted domains from the drop-down box. If you wanted to pursue this option, you would need to make a Registry change on your clients that would disable the drop-down entirely; your users would need to log in by entering "Domain\Username" or "user@domain.com" in the username field.

A better choice in my opinion would be to confgure the "Logon Locally" user right within Group Policy to control who can log in where.  So you might configure a GPO for workstations in DomainA so that only DomainA\Domain Users have the logon locally right, and similarly for your other domains.

Hope this helps.

Laura E. Hunter - Microsoft MVP: Windows Server - Networking
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sometechguyAuthor Commented:
Of Course! Why didn't I think of that! Thank you very much.
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Windows Server 2003

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