Ethereal-dev: Re: [Ethereal-dev] Want to capture WLAN packets

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From: Guy Harris <guy@xxxxxxxxxxxx>
Date: Fri, 28 Jul 2006 10:45:03 -0700
madhur wrote:

I want to capture 802.11 WLAN packets from Ethereal. But when I tried with NetGear wireless card, I was able to capture Ping packets
But It was not showing any WLAN packets like

1)       Beacon frames

2)       Authentication request/response

3)       Association request/response

So please any buddy can tell me how to capture these packets.
Step 1: do *NOT* run Windows on your machine.  NDIS (which is what the 
WinPcap driver uses), and the standard 802.11 drivers on Windows, have 
no mechanism to allow a driver or application to request that it see 
802.11 management frames.
Which NetGear card do you have?  Linux and/or one or more of the 
free-software BSDs might support the card and support putting it into 
monitor mode.  (Note that, in monitor mode, most if not all network 
adapters do *not* support being associated with a network, so you can 
only do passive traffic capture.)
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