(In modern society, almost all enterprises and enterprises will use the network to deal with internal costs or to connect with the outside world. Enterprises also spend high costs to access the Internet, but in fact, these bandwidth costs are not fully utilized, and some employees Using the company's capital, chatting on private QQ, reading pages unrelated to work, and even playing various online games, downloading movies, etc., these illegal Internet behaviors of employees consume the already serious corporate bandwidth, resulting in The network speed of the corporate LAN is too slow, and it is even difficult to open pages and send and receive emails, which seriously disturbs the normal business of the company.)