First step to begin hacking the WEP networks is to put your wireless network card into monitor mode. For this we will use ifconfig and iwconfig. As I wrote in last post, these instructions may not work for your card. I will explain how to set it up with atheros chipset cards in a separate post. This is for Broadcoms or RT2500 and many other cards.
Step 1: Open a Konsole shell by clicking on the little black monitor icon on the bottom left hand corner of the screen.
Now we want to see what the cards installed on our computer are known as.
Step 2: At the prompt type iwconfig
You will see something like this:
lo no wireless extensions
eth0 IEEE 802.11b/g ESSID:Off/any Nickname: "Broadcom 4311"
Mode: Managed Frequency=2.437 GHz...
And some more lines.....
Disregard the 'lo' card. Your card is the one or more other cards listed. In my case the card is known as 'eth0'. As we can also see in the second line, the card is currently in managed mode, we must get it into monitor mode.
We also need our card to be "UP". To check the up and down status, we
Type : ifconfig
The results should show your card and the second line of the cards information should start with 'UP'. If your card is not shown or if it is not showing it with the word 'UP', then we must put it up. If you're not sure, you can also put it up and there will be no harm done. Here's how we do it.
Type : ifconfig eth0 up (replacing 'eth0' with your card).
That's it. Easy , wasn't it?
Now type ifconfig again and you should see your card and marked as up. Here's a screenshot of the steps so far:
Type : iwconfig eth0 mode monitor
In case you couldn't tell, this places the card into monitor mode. Doing iwconfig again should now show mode as monitor, as shown in this screenshot:
If you followed all these simple steps, you should be ready to start with airodump. If you have an atheros based card, stand by...