RE: wireless access point

["Bo Mendenhall" <Bo.Mendenhall () hsc utah edu>]

Please correct me if I'm wrong:

Marvin's Statement below is true because eventually someone who has the SSID for an AP will hop on the AP, at which 
time it broadcasts the SSID, so Netstumbler would potentially pick it up the SSID at that point.

> > > "Myers, Marvin" <MRMyers () anteon com> 06/06/03 12:34PM >>>
That is not entirely true. Netstumbler does in fact detect AP's that do not broadcast their SSID, it just takes longer. 
I have proven this on more than one occasion using NetStumbler on XP with both Orinoco and Netgear cards.

-----Original Message-----
From: Christopher Harrington [mailto:charrington () syseng com] 
Sent: Friday, June 06, 2003 1:23 PM
To: lod () acmesecurity org; security-basics () securityfocus com 
Subject: RE: wireless access point

Netstumbler does not detect AP's that do not broadcast their SSID. I know Kismet and Wellenreiter do, I cant speak for 
the others.

--Chris


-----Original Message-----
From: Luiz Otávio Duarte [mailto:lod () acmesecurity org] 
Sent: Thursday, June 05, 2003 9:54 PM
To: security-basics () securityfocus com 
Subject: RE: wireless access point


Hi,

> Is there any way of detecting wireless access point that doesn't 
> broadcast
> the SSID?

Yep, It's possible. I will tell you why:

   We have two probing modes for channels in a 802.11 network.

  - Activing probe - Is when the prober machine exchange some probe frames 
with the AP.

  - RFMON - Radio Frequency Monitor (Passive probe) - when the probe machine 
capture all data in the channel and try to find some SSID (Service Set 
Identification)

  You can find AP that does not broadcast the SSID using any probe technique.

  You can use: Netstumbler, DStumbler, Kismet, Wellenreiter, THC-RUT, 
WEPCrack, AirSnort, .... 

That's All Folks! 

-- 
##
# Luiz Otávio Duarte (lod at acmesecurity dot org)
# www.acmesecurity.org/~lod 
##
# ACME! (Computer Security Research)
# www.acmesecurity.org 
##
# Unesp - São José do Rio Preto - São Paulo - Brazil
##

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