tonylog: How to install and configure kismet on ubuntu feisty fawn

The sniffer Kismet, anti-intrusion software In this little how-to I am going to see hot to install and configure one of the most famous detector, sniffer, and intrusion detection system for wireless networks, Kismet. Kismet recently has been downloaded thousands of times from its website , because of that ubuntu developers decided to make it available for download from the universe repository, this assures the fact that they will keep the packet up to date and that the ubuntu team, is actually looking after and solving dependencies. Before proceeding to install kismet we need to check 2 things: is the wireless card recognised by the system ? does our wireless card support the method monitor ? If you can not answer to any of this question please send a message.Start the installation from a terminal:

sudo apt-get install kismet

Obviously you need to be connected to the internet. After installation we need to configure the kismet server, to do that we need to:

sudo gedit /etc/kismet/kismet.conf

The voice that will make your kismet server run correctly is:

source=type,interface,name[,channel]

It needs to be changed into:

source=ipw3945,eth0,Wireless Card

DONE! Now to run your kismet you need to turn on your wireless card in monitor mode with the command:

sudo iwconfig eth0 mode monitor

After that to run the kismet application:

sudo kismet

To turn off the kismet server you need to write a capital Q and to turn off the mode monitor of your wireless card:

sudo iwconfig eth0 mode managed

MIND: Not all wireless cards come out clean from the monitor mode, in case your wireless does not work properly after switching back to managed mode a restart of your ubuntu linux machine will fix everything.