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Posted by:jasonmc
Subject:channel bleeding
Date:02:36:12 17/12/2012

weird cause it always happens... on channel 11 i see even channel 9 sometimes.

but the packets wouldn't fail an fcs check if they were heard right, they'd just be heard on the wrong channel.

can't there be a check for the packet's own channel it says it belongs to, and the channel you're on as an option?

it's come down to kismet as as the only thing to use so far for me with the validatefcs choice it has.. and nice gui.

i'm using the newest linux kernel and the ath9k driver still has no choice of not giving you bad packets. but with that is everything that can be heard on the radio waves hehe. it's even the only adapater to buy at hakshop, it's so recommended for wireless fun.



> > just wanted to say... with all the trouble i'm having with my awesome alfa AWUS036NHA hacker friendly wifi adapter, kismet is by far the best tool for capturing packets :)
> >
> > i'm having a problem with good packets that pass validatefcs from other channels 1 above or beneath.... guess the adapater is being too sensitive.
> >
> > don't packets say what channel they belong on in 802.11 ? not sure if they do.
>
> Only beacons.
>
> >
> > that'd be cool if there was a choice to take that from the packet and ensure you're on the channel tool, or reject it.
>
> There is not.
>
> 802.11 channels are 22mhz wide on 2.4ghz, and only 5ghz apart. There is significant overlap.
>
> This is why everyone says only use channels 1, 6, 11 in dense environments. Those are the only 3 channels which do not overlap.


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