Jon,

Just to clarify, you keep talking about APs of a different color:

http://dictionary.reference.com/browse/rouge?s=t

http://dictionary.reference.com/browse/rogue?s=t

The Net Disco tool isn't too difficult to set up if you know your way around Linux
http://www.netdisco.org/

It'll SNMP walk your entire network and tell you what's connected, and where. If the rogue AP has SNMP enabled, it'll find it and tell you the make/model and which switch port it's hanging off.

-Mike

-----Original Message-----
From: listbounce (at) securityfocus (dot) com [email concealed] [mailto:listbounce (at) securityfocus (dot) com [email concealed]] On Behalf Of Jon D
Sent: Tuesday, May 15, 2012 1:28 PM
To: security-basics (at) securityfocus (dot) com [email concealed]
Subject: Re: Tool to find rouge wireless access points?

Sorry Felipe. Basically the core question is 'how to find rouge access points'.
For example, if an end user plugs in a linksys wireless router under
their desk, how do you detect it?

Expanding on the question, is that usually from what I've seen, just
scanning with nmap or something might not pick it up if the AP is
configured not to respond to pings, and doesn't have ports open, etc.
And without knowing the encryption password, sniffing wireless traffic
seems out of the question too. Simply scanning with something like
kismet will only tell you that there's an AP in the area, but you
don't know if it's an AP plugged into your network, or if it's another
companies AP.
The link that was posted about sniffing the encrypted wireless traffic
for netbios requests that aren't encrypted seems interesting.
Something I'll try.

Thanks,
Jon

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