Hello,
I have a question about sniffing 802.11 wireless traffic;
I am running wireshark-1.0.0-2 on Fedora Core.
I had set my wireless nic (ZD1211) to be in monitor mode;
iwconfig wlan0 shows:
wlan1 IEEE 802.11 Mode:Monitor Frequency:2.412 GHz Tx-Power=0 dBm
Retry min limit:7 RTS thr:off Fragment thr=2352 B
Encryption key:off
Link Quality:0 Signal level:0 Noise level:0
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
I had started sniffing with wireshark by selecting wlan1 in
capture->options (and also selecting
promiscuous mode).
I can sniff only probe requests packets. Any idea why I cannot see beacons from
an Access Point ? There is an Access Point near me to which I can
associate from
other machines near me (and also from my machine when changing to managed mode).
It seems strange to me, because I scan for more than 5 minutes and
no beacon fragments. (As far as I know, an access point sends usually 10
beacons per second, or more )
What could be the reason? I simply don't believe that an Access Point does
not send beacons!
Regards,
Mark
