The backdoor could easily only accept connections from non local sources, or
a specific source. It's probably easier to just run netstat, lsof, etc.
from a clean. trusted media... or also boot into single user mode from a
trusted kernel image. In fact, you should always have trusted kernel images
on the server anyway, for purposes of being able to boot if the other image
is corrupted or modified. As for LKM, I don't compile with lkm support in
my kernels for many reasons (security being one of them), but a lot of
people do, so...
--
Regards,
Tim Greer chatmaster@charter.net
Server administration, security, programming, consulting.
----- Original Message -----
From: "Daniel B. Cid"
To:
Sent: Thursday, July 31, 2003 1:18 PM
Subject: Finding hidden backdoors
> I saw some people talking about rootkits that hidden process/ports.
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Received on Fri Aug 1 12:12:41 2003
