Friday, Jul 28, 2017
When an wireless access point wants to advertise its available networks, it sends out 802.11 beacon frames. These frames are seen by other 802.11 receiving radios, and if you can capture those frames, you can use CloudShark’s Wireless Networks tool to see all of the wireless networks (named with their SSIDs) nearby. Alternatively, when Wifi stations come online, they may send out a frame called a “Probe Request”. An access point can respond to these requests with a “Probe Response”.