Virus/trojan tunnel out from behind firewall?

From: David Carmean (dlc@halibut.com)
Date: 02/24/02


Date: Sun, 24 Feb 2002 11:15:25 -0800
From: David Carmean <dlc@halibut.com>
To: incidents@securityfocus.com


Greetings. New to the list; have looked through a few months of
the archives and hadn't seen this come up:

Have there been any cases of a trojan/virus/etc tunnelling out from
behind a firewall and thus providing an attacker a way into the
"chewy center"?

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