8.12 Monitor Mode

The Monitor mode can be enabled on Linux using the following commands:

# modeprobe wilc-sdio.ko 
# ifconfig wlan0 up 
# iw dev wlan0 set type monitor 
# iw dev wlan0 set freq <freq> // eg. 2437 for channel 6

A capturing tool can then be used with the interface to dump the received packets. In the following example, tcpdump is used as follows:

# tcpdump -i wlan0 -n -w packets_dump.cap

Note: To use tcpdump, it must be enabled in buildroot's menuconfig under Target Packages> Network.

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