Hacker preventing method, equipment and system

The embodiment of the invention discloses a hacker preventing method. The hacker preventing method comprises the steps of receiving a message including a check code and an IP (Internet protocol) address and sent by a client terminal; analyzing the message so as to obtain the check code and the IP address; checking the check code, and when the check is passed, taking the IP address as a trusted IP address; and establishing connection with the client terminal. After adoption of the hacker preventing method, hacker preventing equipment and a hacker preventing system, hacker attack or invasion can be effectively prevented.