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RE: AD Child Domains
From: "Rhett Grant" <rgrant () nextsequence com>
Date: Wed, 23 Apr 2008 20:08:39 -0400

-----Original Message-----
From: listbounce () securityfocus com
[mailto:listbounce () securityfocus com] On Behalf Of Raoul Armfield
Sent: Wednesday, April 23, 2008 2:43 PM
To: security-basics () securityfocus com
Subject: AD Child Domains

We are in the process of making a modification to our AD structure.
For
PCI compliance we need to segregate a portion of our users to a
separate
domain.  This set of users do not need/want (and are very vocal about
it) to follow the stricter password policy that PCI mandates.

I understand that when you create a child domain it by default creates
a
two-way transitive trust between the two domains.  Is it possible to
limit this trust relationship to a one-way trust relationship?  If this
is possible it seems to me that it may be preferable to creating a new
forest just for a couple of hundred users.

Of course it is entirely possible that I am not thinking this through
completely and am missing some important factors to consider.  Your
thoughts would be greatly appreciated.

Raoul

There is no way (that I know of) to selectively configure the transitive
trust established between a parent/child domain.  I am not fully
understanding what you are trying to accomplish other than using a separate
password policy which a child domain will allow.  Only use a separate forest
to meet a security need.  And again I would be evaluating if it could be
done with a DACL.  It becomes much more complicated and time consuming to
manage two forests then to manage a parent/child Domain.


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