the easiest way to get aircack-ng and reaver working on ubuntu 12.04
neither aircack-ng nor reaver is in the repos in ubuntu 12.04. aircrack was dropped in the precise cycle because it was dropped by debian temporarily in order to sort out some licensing and maintenance issues, and reaver is fairly new and just didn't make it in time. fortunately both packages are in 12.10. by far the easiest way to get these packages to work in 12.04 is to download the quantal versions and install them in precise. i've done so, and i haven't run into any problems. :) the packages can be found here: http://packages.ubuntu.com/quantal/aircrack-ng http://packages.ubuntu.com/quantal/reaver once installed, run: ifconfig to figure out your wifi interface. then put it in monitor mode: sudo airmon start wlan1 next, run 'airodump' to figure out the BSSID of the network you are aiming to penetrate: sudo airodump mon0 when you have found it, cntr-c to exit. then run 'wash' on it to see if reaver is possibly going to be successful.