Re: capturing on both interfaces simultaneously

[abhinav narain <abhinavnarain10 () gmail com>]

On Mon, Dec 12, 2011 at 4:10 PM, <dragorn () durandal kismetwireless net>wrote:

> On Mon, Dec 12, 2011 at 12:53:38PM -0800, Guy Harris wrote:
>
> > > Will I ever see HT40+,40- in case of beacons.
> >
> > Probably not.
>
> > > Ok. So, there is nothing as a N beacon..
> > > Only advertisements at 1,6 rate and then actual data at N speed.
> >
> > Right.  The beacons will generally be transmitted at low speed, so even
> older stations can see them.
>
> About the only time you'll see beacons on non-basic rates is a
> greenfield deployment, of which I've *never* found one in the wild
> despite all the manufacturers caring about it.
>
> Lets see

> Also under linux you will need to tune explicitly to CH+ or CH- to get
> 40mhz data packets, they will be silently ignored on just CH.  This
> means you must use netlink to set the channel as siochannel can't
> understand HT+ and HT-.
>
> Is CH+,CH- synonymous to HT+,HT-. I havent come across these terms as of
now.
iw talks about HT though


> I don't recall offhand if you'll still see basicrate packets on CH+ or
> CH- settings.
>
> Sniffing 11n in linux is a big mess.
>
> Any specific reason why?

Abhinav
-
This is the tcpdump-workers list.
Visit https://cod.sandelman.ca/ to unsubscribe.