| Summary: | Industrial control firewall and other network protection devices are easy to become response bottleneck when the interface flow is too large and resources are too occupied. In order to solve the problem, this paper proposes a kind of industrial safety protection system based on adaptive depth detection. The system is installed in the upstream of protection equipment, it can realize the recognition of industrial control protocol and parse protocol data deeply, and realize the depth of the realization of industrial control network protocol and testing or filtration. According to the state of industrial control field network, the system can adjust the level of depth detection algorithm dynamically, it can be able to handle all kinds of industrial control protocols in the current environment and analyzes protocol in-depth，which protects the industrial control site network.
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