Safety protection method and device for traffic signal controller

Abstract

The invention discloses a safety protection method and device for a traffic signal controller, and a safety protection end can obtain control data sent to the traffic signal controller by a control end, and analyzes the control data based on a protocol analysis library. Afterwards, according to an abnormal feature matching library, feature matching is carried out on each piece of control content obtained through analysis; and when the control content is successfully matched with the abnormal characteristics, performing protection processing on the control data according to the protection strategy, otherwise, forwarding the control content to the traffic signal controller, so that the traffic signal controller adjusts the display state of the traffic signal lamp according to the control content. The control data are analyzed through the safety protection end, abnormal feature matching is carried out, malicious control data are effectively monitored and intercepted, major traffic accidents caused by malicious attack behaviors are avoided, and the safety of a traffic system is guaranteed.

Description

technical field [0001] The present application relates to the technical field of intelligent transportation, in particular to a safety protection method and device for a traffic signal machine. Background technique [0002] Traffic signal is one of the important components of modern urban traffic system, used to control and manage traffic lights, traffic display screens, etc. on the road. [0003] In order to ensure the control safety of traffic signals, prevent criminals from maliciously and illegally manipulating traffic signals and causing traffic chaos. At present, the method of port filtering is often used to protect the traffic signal machine. Since there are several ports on the traffic signal machine, different ports are used to connect different services. Therefore, by limiting the transmission of the port output on the traffic signal machine, only the communication of the service port is allowed and the communication of other non-service ports is prohibited, ther...

AI Technical Summary

Problems solved by technology

[0004] However, the protection method through port filtering can only filter malicious attacks by criminals through other non-service ports, but cannot identify and protect malicious control commands sent through service ports, and there is still a relatively large security risk

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