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Date:      Wed, 1 Dec 1999 13:36:21 -0800 (PST)
From:      Kris Kennaway <kris@hub.freebsd.org>
To:        Jason Hudgins <thanatos@incantations.net>
Cc:        freebsd-security@freebsd.org
Subject:   Re: logging a telnet session
Message-ID:  <Pine.BSF.4.21.9912011334370.26230-100000@hub.freebsd.org>
In-Reply-To: <Pine.BSF.4.10.9912011525590.16289-100000@eddie.incantations.net>

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On Wed, 1 Dec 1999, Jason Hudgins wrote:

> > The problem with using the cracked box to watch itself is kind of obvious
> > given that your intruder has the same level of privileges as you do. You
> > really want to be doing this from a safe secondary system.
> 
> And why is that exactly? Pardon me if I'm simply ignorant, but what is
> the "problem", and why would a secondary system be perferrable.

Because the attacker can simply disable all of your logging, and/or
replace them with false logs - you have to assume they know what you're
doing and will take steps against it (or they already have). A second
system watching the packet stream can't be subverted without also breaking
into _that_ one, which is much more difficult if you configure it
restrictively.

Kris



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