Time for action – cracking WEP

Follow the given instructions to get started:

1. Let us first connect to our access point Wireless Lab and go to the settings area that deals with Wireless Encryption mechanisms:

   

2. On my access point, this can be done by setting the Security Mode to WEP. We will also need to set the WEP key length. As shown in the following screenshot, I have set WEP to use 128 bit keys. I have set the Default WEP Key to WEP Key 1 and have set the value in hex to abcdefabcdefabcdefabcdef12 as the 128 bit WEP key. You can set this to whatever you choose:

   

3. Once the settings are applied, the access point should now be offering WEP as the encryption mechanism of choice. Let us now set up the attacker machine.

4. Let us bring up Wlan0 by issuing the command ifconfig wlan0 up. Then we will run airmon-ng start wlan0 to create mon0, the monitor mode interface, as shown in the following screenshot. Verify the mon0 interface has been created using iwconfig command:

   

5. Let's run airodump-ng to locate...