Capturing wireless LAN traffic

Capturing options

If you are trying to capture traffic between a wireless station running Wireshark and other wired/wireless machines in the network, and interested only in regular network data, not in 802.11 control packets or radio/link-layer information, then you don't have to do anything special. Just open Wireshark, choose the specific wireless interface you are interested in, apply the necessary filters and run it in promiscuous mode.

Using Wireshark, if you want to capture traffic between different processes running within the wireless station, then the capture should be done on a loopback interface.

If you are trying to capture traffic that is not only sent to or from the wireless...