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Monitor Mode - how?


michael_kent123
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I am trying to use Cookie Cadger: https://www.cookiecadger.com/

It requires an interface to be set in monitor mode.

I have never had a problem with this before. I use sudo airmon-ng start wlan0 which creates mon0.

I now have the wlan0 in managed mode plus:

mon0 IEEE 802.11bgn Mode:Monitor Frequency:2.437 GHz Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off

However, when I run the Cookie Cadger .jar file:

tshark: there are no interfaces on which a capture can be done.

Capture device search complete with 0 devices found.

I found a guide to Cookie Cadger here (https://ctrlaltnarwhal.wordpress.com/2012/11/04/using-cookie-cadger-for-live-packet-capture/) which also provides some different ways of using monitor mode (https://ctrlaltnarwhal.wordpress.com/2012/11/02/cookie-cadger-is-free-but-how-do-i-use-it/).

It suggests sudo iwconfig wlan0 mode monitor. However, if wlan0 is in use (connected to the network I want to sniff) I get:

sudo iwconfig wlan0 mode monitor
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; Device or resource busy.

So I sudo ifconfig wlan0 down then sudo iwconfig wlan0 mode monitor then sudo ifconfig wlan0 up. I then iwconfig and get:

wlan0 IEEE 802.11bgn Mode:Monitor Frequency:2.437 GHz Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on

But when I load the .jar file I get the same error as before.

Does any one have any ideas how I can successfully use this program. I can put wlan0 and mon0 in monitor mode but, for whatever reason, Cookie Cadger does not find them.

Or maybe I am missing something obvious and just can't see it?

Many thanks!

Edited by Sebkinne
Fixed title
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