Let's now set our wireless adapter into monitor mode.
Follow these instructions to get started:
- Boot Kali with your adapter connected. Once you are within the console, enter
iwconfigto confirm that your card has been detected and the driver has been loaded properly.
- Use the
ifconfig wlan1 upcommand to bring the card up (wherewlan1is your adapter). Verify whether the card is up by runningifconfig wlan1. You should see the wordUPin the second line of the output as shown in the following screenshot:
- To put our card into monitor mode, we will use the
airmon-ngutility that is available by default on Kali. First runairmon-ngcommand to verify whether it detects the available cards. You should see thewlan0interface listed in the output:
- Now enter
airmon-ng start wlan1command to create a monitor mode interface corresponding to thewlan0device. This new monitor mode interface will be namedmon0. (You can verify if it has been created by runningairmon-ngwithout arguments again).
- Also, running
ifconfig mon0should now display a new interface calledmon0.
We have successfully created a monitor mode interface called mon0. This interface will be used to sniff wireless packets off the air. This interface has been created for our wireless adapter.
It is possible to create multiple monitor mode interfaces using the same physical card. Use the airmon-ng utility to see how you can do this.
Awesome! We have a monitor mode interface just waiting to read some packets off the air. So let's get started.
In the next exercise, we will use Wireshark to sniff packets off the air using the mon0 monitor mode interface we just created.
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