First using the basic commands of iwconfig and tcpdump, and then the dedicated software Kismet. Here are some instructions for using my Samsung NC10 Ubuntu laptop to capture wireless LAN packets. I suggest reading/trying both iw seems to be more powerful and now works more often for me than iwconfig. Update : The following instructions use iwconfig to enable monitor mode on wireless LAN interfaces in Linux if written instructions for an alternative approach, using iw to enable monitor mode. Nowadays many more cards are supported, but most features of capturing are usually only possible under Unix-like operating systems (its hard/impossible in Windows). Then I used Cisco Aironet 350 PCMCIA cards, RedHat Linux and Ethereal (now called Wireshark). Then, as it is now, the major difficulty was having drivers for your wireless card that support capturing (i.e. I first tried capturing wireless LAN packets in 2002. By inspecting individual wireless LAN frames, you can see the detailed operation of the wireless LAN medium access control. Capturing Wireless LAN Packets on Ubuntu with tcpdump and KismetĬapturing packets on a wireless LAN interface can be fun because you can see what other nearby laptops and access points are sending.
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