I've been experimenting to use aircrack to test out Access Point(AP) security for about a month and a half now, and i used to do it with 3 wireless card that I own which is Broadcom(Built-in on my laptop), rt73usb(which is a USB wireless Device) and ZD1211rw(also a USB device).
Formerly, I have to patch my modules in order to make the cards to go into monitor mode so that it could be used with aircrack suite. All the hard work will paid out if you successfully patch your cards. But to find the right patch is the most hard part as not every patch is suitable with your chipset.
But, i notice somthing different on the latest linux kernel(maybe it might be working too on BSD's kernel), you dont have to patch your card to change your wireless mode into monitor-mode. But this is only tested on Mac80211 cards only. As far as I'm concern, b43(latest driver for broadcom), rt73usb and zd1211rw - all of this card happened to be mac80211 cards on kernel 2.6.24 and higher.
So al you need to do is install the iw application. So how to install 'iw'? It took a few steps to install 'iw'. But even a new linux user could install this without any problems. First all you have to do is install all the requirements needed by 'iw' in order to function.
sudo apt-get update && sudp apt-get install libnl-dev libnl1 libnl1-pre6Then when all the requirements has been installed, we may proceed to gathering the 'iw' source:
mkdir iw && cd iwAnd now proceed to the final step:
wget http://gunblade.fakap.net/tool/wireless/iw.tar.bz2 && tar xvjf iw.tar.bz2
make && sudo ln -s iw /usr/sbin/iwAnd we are done. So now you may try to install the aircrack from SVN by using subversion. There is a simpe tutorial on how to install this latest version of aircrack from by using subversion. But first you need to install subversion first by apt. More tutorial on how to install aircrack is on my previous post.