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Date:      Thu, 22 Nov 2001 20:55:30 +0100 (CET)
From:      Krzysztof Zaraska <kzaraska@student.uci.agh.edu.pl>
To:        cjclark@alum.mit.edu
Cc:        security@FreeBSD.ORG
Subject:   Firewall design [was: Re: Best security topology for FreeBSD]
Message-ID:  <Pine.BSF.4.21.0111222046180.636-100000@lhotse.zaraska.dhs.org>
In-Reply-To: <20011122031739.A226@gohan.cjclark.org>

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On Thu, 22 Nov 2001, Crist J. Clark wrote:

<snip>
> It is sad to see this poor design,
> 
>      Internet
>         |
>         |
>       Firewall--"DMZ"
>         |
>         |
>      Internal
> 
> Used so very, very much these days (I think thanks to several firewall
> vendors pushing this as a standard design).
> 
> A much better design, is
> 
>       Internet
>          |
>          |
>       Firewall1
>          |
>          |
>         DMZ
>          |
>          |
>       Firewall2
>          |
>          |
>       Internal
> 
> (This design is actually where the term "DMZ" comes from since it
> actually looks like one here.)

Could you please explain why the second design is better? I know it's
harder to properly construct the correct ruleset for the first topology,
but what are other problems?

Thanks in advance,

Krzysztof


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