Schema vs. Enterprise vs. Domain Admins

You have to choose who will be your domain admins very carefully, even in a multi-domain environment. That’s because there are exploits that can enable Domain Admins to make themselves into Enterprise Admins or even Schema Admins! And this works even if you are a Domain Admin in a child domain! What this means that if you need true separation of admin powers, you need to deploy multiple forests. That’s because the forest is the only real security boundary in Active Directory. Domains are not true security boundaries. And this is also reason that Microsoft has stopped promoting the idea of an empty forest root domain where only Enterprise Admins reside, since these exploits can enable a Domain Admin in a child domain to easily become an Enterprise Admin and own the forest.


Mitch Tulloch was lead author for the Windows Vista Resource Kit from Microsoft Press, which is THE book for IT pros who want to deploy, maintain and support Windows Vista in mid- and large-sized network environments. For more information see

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