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Posted by:cutter409
Subject:ath9k w/ kismet
Date:23:35:52 30/08/2010


I'm having some difficulty getting kismet to work with an ath9k card on OpenWRT using 2010-07-R1.

In my kismet.conf, I'm simply using "ncsource=wlan0".

My /etc/config/wireless is:
config wifi-device radio0
option type mac80211
option macaddr 00:15:6d:84:66:2a
option diversity 0
option rxantenna 1
option txantenna 1

config wifi-iface
option device radio0
option mode monitor

That gives me a monitor mode interface:
wlan0 IEEE 802.11abgn Mode:Monitor Tx-Power=0 dBm
RTS thr:off Fragment thr:off
Power Management:off

This is what kismet_server gives me:
INFO: Matched source type 'ath9k' for auto-type source 'wlan0'
INFO: Using hardware channel list 1:3,2,3,4,5,6:3,7,8,9,10,11:3,36,40,44,48
165, 32 channels on source wlan0
INFO: Source 'wlan0' will attempt to create and use a monitor-only VAP
instead of reconfiguring the main interface
INFO: Created source wlan0 with UUID 1effe8ca-b48e-11df-b4c2-156103c30632
INFO: Will attempt to reopen on source 'wlan0' if there are errors
INFO: Created TCP listener on port 2501
INFO: Kismet drone framework disabled, drone will not be activated.
INFO: Inserting basic packet dissectors...
INFO: Allowing Kismet frontends to view WEP keys
INFO: Starting GPS components...
INFO: GPS support disabled in kismet.conf
INFO: Creating network tracker...
INFO: Creating channel tracker...
INFO: Registering dumpfiles...
INFO: Pcap log in PPI format
INFO: Kismet starting to gather packets
ERROR: Not creating a VAP for wlan0 even though one was requested, since
the interface is already in monitor mode. Perhaps an existing
monitor mode VAP was specified. To override this and create a new
monitor mode vap no matter what, use the forcevap=true source option
ERROR: Source 'wlan0': channel get ioctl failed 22:Invalid argument
INFO: Started source 'wlan0'

Here's the strange thing. If I change /etc/config/wireless so that the Mode is "sta" (station), and give it an ssid, kismet actually creates works, but I detect my own probe requests even with txpower set to zero. I still get that invalid argument error though..
INFO: Kismet starting to gather packets
INFO: Source 'wlan0' attempting to create mac80211 VAP 'wlan0mon'
ERROR: Source 'wlan0': channel get ioctl failed 22:Invalid argument
INFO: Started source 'wlan0'
INFO: Detected new probe network "test_ap", BSSID 00:15:6D:84:66:2A,
encryption no, channel 0, 54.00 mbit

Any insight?

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