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Re: Tool for Identifying Rogue Linksys Routers

from [Dave Hull] Network Security [Permanent Link]
Subject: Re: Tool for Identifying Rogue Linksys Routers
Date: Fri, 26 Aug 2005 14:29:11 -0500 
If the Linksys devices are DHCP clients themselves, you might be able
to use DHCPFingerprint to locate them when they renew their leases.

You may want to contact the folks at http://www.packetfence.org. They
may have a more comprehensive list of signatures.

Also, nmap may work, see
http://seclists.org/lists/nmap-dev/2003/Apr-Jun/0010.html for more
details.

Examining TTLs of packets coming from edge devices may also give you
some indication of who's sitting behind an extra hop, though some
folks may be savvy enough to tweak this on their workstations to avoid
detection.

Good luck.

On 8/25/05, Martin Mkrtchian <dotsecure@gmail.com> wrote:

Dear Group Members

We are migrating from Lucent QIP to MetaIP for DHCP services and so
far we have had two issues when MetaIP has been implemented for  VLAN
that has an unauthorized Linksys router giving out IP addresses.

Is there a scanning tool out there that can determine if there are
unauthorized Linksys (type) routers in a specific VLAN?

Your input is appreciated

Thank You

Martin  M
http://dotsecure.blogspot.com




-- 
Dave Hull
ireadit@gmail.com
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