WiFi Sniffing, what sees what, and why do I only see broadcasts in Promiscuous mode

[jwright at hasborg.com (Joshua Wright)]

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Don Berry wrote:
> 802.11b devices CANNOT decode 802.11g frames since they use different RF
> modulation. DSSS vs. OFDM 

I stand corrected; I was under the impression that 802.11g clients used
DSSS for backward-compatibility for rates 802.11b data rates.  This
appears to be true only for broadcast frames that must be decoded by all
clients.  Unicast frames will be send using OFDM modulation, which an
802.11b client will not be able to demodulate.

I would also note that an 802.11b card in monitor mode would see
management and control frames from 802.11g STA's since these frames are
sent at a lower data rate for backward-compatibility.

Thanks Don!

- -Josh
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