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Re: DMZ and AD Authentication
From: "Mitchell Rowton" <mrowton () bdo com>
Date: Mon, 15 Dec 2003 15:11:29 -0500

Having multiple DMZ's helps in this situation.  One DMZ could be for the
external facing services.  Another could be for domain controllers that
the external servers need to authenticate with.  While your at it, throw
in a database DMZ, wireless DMZ, remote access DMZ, management DMZ,
etc...

The more DMZs you have, the more granular access controls you can
enforce.

Mitchell

<Geoff.Shatz () pchelps com> 12/12/03 10:32AM >>>
We are in a situation where we are currently planning the move of our
web server from an externally hosted solution to hosting the web server
in house. As part of this move we will be implementing a new internal
application that will run on the web server that will require
authentication based on Active Directory account info. Obviously this
will require that the web server has the ability to communicate with the
AD domain controllers. That being the case will it still be possible to
place this web server on a DMZ or will the amount of open ports required
between the DMZ and LAN for the required authentication process severely
mitigate the benefits of placing the server in the DMZ in the first
place? Any and all suggestions and or strategies to accomplish this in
the most secure fashion are welcome and appreciated. Thanks!

Geoff

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