Re: libpcap and 802.11

[Edin Dizdarevic <edin.dizdarevic () interActive-Systems de>]

Hi Francis,

Francis IELSCH wrote:
> hi,
>
> We are 3 students trying to write a 802.11 sensor for Prelude IDS. We
> are beginners in paquet capturing and we would like to know if it is
> possible to capture 802.11 frames with libpcap ?

This question came up a few times already. Guys read the old postings first...

Regards,

Edin

Guy Harris wrote on this:

On Thu, Apr 10, 2003 at 11:11:52AM +0200, Thomas Rulmont wrote:

> > I'm working on a small sniffer for 802.11 monitoring. The problem is that I
> > need to intercept all management and beacon frames that normally stop at MAC
> > sublayer. I would like to know how I can catch this frames, with all the
> > addresses (that can be up to 4).
> > I'm using a linksys 802.11b card under Linux 2.4.20


        http://www.ethereal.com/faq.html#q5.25

whcih refers to Ethereal, but the issues are really generic issues for
*all* libpcap-based applications trying to capture all 802.11 packets.

> thanks for your help :-)
> Francis IELSCH
> ESIEA (http://www.esiea.fr)

-- 
Edin Dizdarevic

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