Re: AD in the DMZ . . . OK?

From: Tomasz Onyszko (T.Onyszko_at_w2k.pl)
Date: 07/29/04

  • Next message: roger.smith_at_calyonfinancial.com: "Re: Lotus Notes Security"
    Date: Thu, 29 Jul 2004 10:34:28 +0200
    To: karl <opium@runningriver.co.uk>, security-basics@securityfocus.com
    
    

    karl wrote:

    > Hello
    >
    > One of the developers I work with has come up with a wild and crazy
    > notion to write a .NET app that sits on a DMZ Web server but gets user
    > information from the Active Directory on the other side of the firewall..
    >
    > I'm inexperienced with this, so did some research and found that this
    > kind of thing is possible (plenty of articles on putting Exchange
    > servers in the DMZ), but found myself wondering if this ever happens,
    > i.e. do people actually have their networks set up this way? Do folk
    > expose/replicate AD to the DMZ in practice?
    >
    > It's all very well that this stuff is possible, but if it's perceived as
    > insecure and not implementable in the real world . . . . . . .
    >
    > Thanks for any advice . . . . .
    >
    I will not recommend such configuration, this is not good from the
    security point of view and also it may caouse some problems with Your
    firewall configuration an produce another "exception" in firewall
    policy. Instead of this I will recommend using ADAM (AD in Application
    Mode) and if this application needs to get data from AD You can replicte
    data from AD to ADAM using MIIS (Feature Pack) or ADAM Synchronizer
    which are avilable for free form micrsofot site

    -- 
    Tomasz Onyszko [MVP]
    T.Onyszko@w2k.pl
    http://www.w2k.pl
    ---------------------------------------------------------------------------
    Ethical Hacking at the InfoSec Institute. Mention this ad and get $545 off 
    any course! All of our class sizes are guaranteed to be 10 students or less 
    to facilitate one-on-one interaction with one of our expert instructors. 
    Attend a course taught by an expert instructor with years of in-the-field 
    pen testing experience in our state of the art hacking lab. Master the skills 
    of an Ethical Hacker to better assess the security of your organization. 
    Visit us at: 
    http://www.infosecinstitute.com/courses/ethical_hacking_training.html
    ----------------------------------------------------------------------------
    

  • Next message: roger.smith_at_calyonfinancial.com: "Re: Lotus Notes Security"

    Relevant Pages

    • Re: AD in the DMZ - Any thoughts on this scenario?
      ... > within the network and not the actual perimeter network. ... > no reason for having internal servers in a DMZ. ... and we firewall them inside too. ... The ADAM suggestion made by both Simon and Paul intrigues me. ...
      (microsoft.public.win2000.active_directory)
    • Ang: RE: Firewall and DMZ topology
      ... Network Engineer ... Subject: Firewall and DMZ topology ... > The Gartner Group just put Neoteris in the top of its Magic Quadrant, ...
      (Security-Basics)
    • RE: Firewall and DMZ topology
      ... Subject: Firewall and DMZ topology ... Should the DMZ be behind the LAN and not split off at the firewall, ... > The Gartner Group just put Neoteris in the top of its Magic Quadrant, ...
      (Security-Basics)
    • RE: Firewall and DMZ topology
      ... Subject: Firewall and DMZ topology ... Also, when I say firewall, I mean Router + Firewall. ... Should the DMZ be behind the LAN and not split off at the firewall, ... > The Gartner Group just put Neoteris in the top of its Magic Quadrant, ...
      (Security-Basics)
    • Re: Unable to join AD domain from DMZ network
      ... To me that points to something outside the machine (Firewall most likely culprit) ... > the captured traffic between the server in DMZ to the DC from internal ... >>> authentication from DMZ to 2003 AD internal network. ...
      (microsoft.public.windows.server.active_directory)