full-disclosure - how to bypass rogue machine detection techniques

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Date: Tue Jul 12 14:55:49 2005
From: amrnems at hushmail.com (amrnems@...hmail.com)
Subject: how to bypass rogue machine detection techniques

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Great physical access is a must when dealing with rogue devices on
a physical network.  But using 802.1x, and disabling the unused
ports would probably be your best answer.  If you just implement
802.1x or as you first mentioned, some kind of port scanning, then
you would never be able to detect a person with a “receive” only
cable connected to you switch.

AmRnEmS

- -----Original Message-----
From: full-disclosure-bounces@...ts.grok.org.uk [mailto:full-
disclosure-bounces@...ts.grok.org.uk] On Behalf Of Gaurav Kumar
Sent: Monday, July 11, 2005 4:59 AM
To: full-disclosure@...ts.grok.org.uk
Subject: [Full-disclosure] how to bypass rouge machine detection
techniques

Friends,

There are several techniques available for detecting rouge (not
being a member of trusted domain) machines, such as active
scanning, active directory querying etc, but I guess most powerful
being the one used by epolicy orchestrator. Its agents (deployed on
each subnet) checks for L2 broadcasts like Arp broadcast etc. After
detecting a broadcast, it used the mac address and ip address to
proceed further to detect whether the machine is rouge or not.

http://www.networkassociates.com/us/local_content/white_papers/wp_ep
o3_5_rsdwhitepaper_july2004.pdf

I was wondering if this approach is foolproof and can be safely
deployed or if there is a way to bypass it?

Regards,
Gaurav
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