It is difficult for an enterprise IT department to find such a network security vulnerability. It can even connect to the GPS receiver, mapping the software, thereby searching for sites related to Wi-Fi access points to achieve free internet access. The most famous of these is NetStumbler, which scans all unencrypted Wi-Fi networks and can measure the signal-to-noise ratio and throughput of each type of network. Some free software allows PCs to easily log into any open wireless network. Simplifies installation, operation, and protection Therefore, the signal analysis in wireless transmission is very important. But almost all Wi-Fi hardware has a degree of security vulnerabilities, and some simplified client configurations may not have any security guarantees.
The transmission medium of WLAN is electromagnetic wave, it is almost everywhere, and there is no obvious boundary. In the area of WLAN, however, the problem is likely to be overlooked. The protocol analyzer is widely used in wired network and becomes a kind of useful testing and maintenance tool.
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