Jotting down an easy recipe to get a 802.11 sniffer working on Ubuntu Linux. To be able to capture 802.11 packets, the first step is to figure out how to configure your wireless card to make it operate in monitor mode. That procedure differs from one vendor to other. We can take the guess work out by using the airmon-ng utility from the wonderful aircrack-ng software suite. It creates a new network interface which is automatically configured to operate in monitor mode. Its compatible with most wireless cards that are shipped with the laptops these days. You can check here, whether your card is compatible or not. Once we have the wireless interface capable of capturing, we can use Wireshark to capture the packets.Continue reading