actually you go to terminal once again and type airmon-ng
start wlan0 - This should activate monitoring mode on Mon0 (just a monitoring device..use this when using other comands) then airodump-ng mon0 - which should show all working networks in your area.
after you select the one you want you put this in terminal
airodump-ng -c 11 --bssid 00:01:02:03:04:05 -w dump rausb0
-c is the channel, in this instance i just put channel eleven
It depends on what you want...it should show the channel the network is on in airmon
you can put -c 6 for channel six.. i think you get the point
--bssid is just the MAC address you want to use
--bssid 00:00:00:00 (replace the 00:00blabla with the mac address youve found.
Now it will start caputring packets/ivs (this basically is making it capure all data sent and receieved on the network trying to decode the WEP key)
now you need to caputre about 40,000 or #DATA before you can actualyl crack the WEP key..this is just saving all the data.
Now after you caputre 40,000 iv's you use the following command
aircrack-ng -b 00:01:02:03:04:05 dump-01.cap
-b is once is just the mac address..and dump-o1 you can nameit anything as long as you name it .cap
Sometimes you might need 7 million or so packets though because some packets are weak but some are strong...
and if you want to do active injection use this command
active injection just makes the packets go faster to create network traffic.
aireplay-ng --fakeauth 0 -e "your network ESSID" -a 00:01:02:03:04:05 mon0
once again essid is the network name, such as Linksys or HOMENETWORK, whatever the wireless connection is.. -a is the mac address followed after that.
any questions ask me on msn - email@example.com
theres also a link here http://www.aircrack-ng.org/doku.php?id=newbie_guide
- which is a pretty decent tutorial when it comes to it...but some parts are hard to understand if your new to linux.