Isolated forests - DMZ

 We have an internal forest and an isolated perimeter DMZ forest.  There is no trust between the two forests. The Service Desk and Help Desk need the ability to administrate the resources in the perimeter DMZ forest on a limited basis.Can AD tools installed on a server joined to the internal forest be against domain controllers in the DMZ?   The primary reason is to deny them the ability to login locally and to have to put up a tools server in the DMZ.  They will have limited credentials to perform some resource administration.  
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With no Trust, it is not possible. You can accomplish what you are after by adding an "admin server" to the DMZ forest with RSAT/adminpak and working out the required delegations for the helpdesk group.
StrangeBrew2Author Commented:
Sigh, I was afraid of that with native RSAT tools.   Have you had luck with 3rd party tools?
No. I don't think a third party product can allow to go across to a different forest without a trust to update attributes and etc. FIM/ILM can potentially do this but it would be too much of an overhead for your need.

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