(?WinAirCrackPack toolkit is a wireless LAN scanning and key cracking tool, mainly including tools such as airodump and aircrack. It can monitor the data transmitted in the wireless network, collect data packets, and can calculate the WEP/WPA key. ?NetStumbler is a tool specially used to find wireless AP, it is the most popular wireless search tool at present, and it is completely free and can be downloaded from down1.tech.sina/do for free. As long as NetStumbler is opened, the wireless APs detected in the vicinity can be automatically displayed, and the SSID, MAC address, frequency band, speed, encryption and other information of these wireless APs can be displayed. It is worth mentioning that NetStumbler can display the wireless AP with the hidden SSID set, and in the software interface, you can see that the green light of the AP is constantly flashing. The wireless APs detected in each frequency band are listed in the tree structure on the left side of NetStumbler. Since NetStumbler performs a comprehensive scan, nearby wireless APs will be seen at a glance. Because it is a software developed by Americans, it can only detect 11 frequency bands between 1 and 11, and the domestic wireless frequency band is divided into 13 frequency bands, so the wireless APs in the 12 to 13 frequency bands will not be able to search. With NetStumbler, you can detect the IP address, MAC address, SSID and manufacturer of the wireless AP. There is another parameter that has to be mentioned, that is, the Type column shows whether the AP has WEP encryption. Regarding the permission to join the wireless AP without WEP encryption (usually a public AP), you can connect and surf the Internet through it.)