Search Linux Wireless

Re: bad packets in monitor mode with ar9170 devices

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Friday 01 April 2011 05:12:45 Realman Namingston wrote:
> ar9170-based devices record a fair amount of bad packets in monitor
> mode both with the old ar9170usb and new carl9170 drivers. The packets
> contain random BSSIDs, some measure of additional random data, and
> seem to scale proportional to the amount of traffic occurring on the
> observed channel. This behavior makes the devices rather unattractive
> for use in Kismet and site survey applications.
> 
> I assume this is due to a shortcoming of the hardware.. but is there
> any potential fix possible?
no, you misunderstood that completely: it's a shortcoming of kismet!

quote:
"Usually the wireless adapter is unable to transmit in monitor mode and
is restricted to a single wireless channel, though this is dependent on
the wireless adapter's driver, its firmware, and its chip set's features.
Also, in monitor mode the adapter does not check to see if the cyclic
redundancy check (CRC) values are correct for packets captured, so some
captured packets may be corrupted."

http://en.wikipedia.org/wiki/Monitor_mode
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Linux Host AP]     [ATH6KL]     [Linux Bluetooth]     [Linux Netdev]     [Kernel Newbies]     [Linux Kernel]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Device Mapper]
  Powered by Linux