Penetration Testing mailing list archives

Re: Exploit through firewall question


From: "Gary E. Miller" <gem () rellim com>
Date: Wed, 19 Jul 2006 11:11:18 -0700 (PDT)

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Yo mr.nasty!

On Wed, 19 Jul 2006, mr.nasty () ix netcom com wrote:

What would be the reason to test behind the firewall?

Lots of reasons.  How about this one:

1. admin takes laptop home for weekend.

2. admin works at home, and while web serving gets infected with a
   trojanC from a web ad.

3. admin returns to work and plugs his laptop in behind the firewall.

4. the trojan in admin's laptop downloads a rootkit, a port scanner
   and a reverse shell.

5. the trojan installs rootkit to hide itself then scans the local net
   for easy targets.

6. the trojan phones home with the reverse shell and uploads the
   list of new found vulnerable hosts/ports.

7. hacker now has unlimited access to your network from behind the
   firewall.

Happens ALL the time.

Some folks would call a network like yours an M&M network.  Hard and
crunchy  on the outside, but soft and chewy on the inside.

RGDS
GARY
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Gary E. Miller Rellim 20340 Empire Blvd, Suite E-3, Bend, OR 97701
        gem () rellim com  Tel:+1(541)382-8588

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