cannot capture packets from wifi router (Netgear WNDR3700).

[Philip Anil-QBW348 <anil.philip () motorolasolutions com>]

I am connected to my wifi network (Netgear WNDR3700) using ubuntu 10.10.
The NIC is Intel Centrino Advanced-N 6200 AGN.The protection is
WPA2-auto. I want to capture packets from it.

 

$ sudo iwconfig wlan0 mode monitor

$ sudo wireshark

 

I try to capture from wlan0. Am connected to the wifi network with an
android phone and browsing websites. However I am unable to see
unencrypted http packets. I select Edit|Preferences|Capture|Protocols
and select 802.11 and select check box to yes for 'decrypt packets'.
Still nothing. 

I tried again ensuring that I performed the above steps before
connecting to the wifi network from my phone. I see only mdns packets.
They are unencrypted - perhaps they are being decrypted correctly. In
the details pane, I see they are Queries: type PTR, class IN, "QM"
question I browse to a web server from my phone on the same network. I
bring up the website (http clear, not https). I browse successfully, but
do not see any http packets in wireshark. 

5 96.017187 10.42.43.1 224.0.0.251 

MDNS Standard query PTR _sane-port._tcp.local, "QM" question 

To troubleshoot, I try switching the channel from 1,2,3 since in Wifi
Analyzer on my phone, I can see that the network occupies channels 0-3 

sudo iwconfig wlan0 channel 1 

Still does not work. 

Any help appreciated.

Anil

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