Anti-replay-attack system for industrial wireless network

The invention provides an anti-replay-attack system for an industrial wireless network, which introduces a third-party detection mechanism in order to reduce system resource consumption. The industrial wireless network comprises a gateway, a router, field equipment and network security manager. The anti-replay-attack system for the industrial wireless network comprises a third-party detection module used for detecting whether intrusion data packets and replay attack data packets exist in the industrial wireless network or not and sending detection results to the network security manager, and the network security manager compares the system resource consumption caused by replay attacks with resource consumption brought by using an anti-replay-attack means to determine whether the anti-replay-attack means is used, thereby effectively preventing the anti-replay-attack means from bringing more system resource consumption than the replay attacks, and two time stamps of creation time and sending time are added in the data packet by a sender, so that the certainty and uniqueness of messages can be ensured; a receiver detection mechanism is adopted, and the data packets of the replay attacks are judged and discarded by a receiver so as to solve the problems of ID authentication and the like.