Network security control method and device for industrial control system

Abstract

The invention discloses a network security control method and device for an industrial control system. The network security control method comprises the following steps of: receiving network connection requests of a plurality of first industrial control terminals and corresponding functional characteristic parameters; establishing a virtual protection network according to the function characteristic parameters and determining node terminals in the virtual protection network; and sending a protection strategy to the node terminals, and starting network connection between an industrial control server and the node terminals and network connection between the node terminals and a second industrial control terminal in the virtual protection network. According to the network security control method and device, the industrial control terminals with the same or similar functional characteristic parameters are classified into the same virtual protection network, and the unified security verification standard is adopted to perform security verification on the message data in the virtual protection network, so that improper network security protection on the industrial control terminals is avoided, and the network security protection efficiency is improved.

Description

technical field [0001] The present application relates to the technical field of network security, and more specifically, to a network security control method and device for an industrial control system. Background technique [0002] The industrial control system is a business process management and control system that ensures the automatic operation of industrial infrastructure and performs process control and monitoring. It is composed of various automation control components and process control components. The process control components are used to collect and monitor real-time data. Control components are used to automate the control of industrial infrastructure. The terminal that realizes the automatic operation in the industrial control system is called the industrial automation control terminal, referred to as the industrial control terminal. With the rapid development of the network environment, the network security of industrial control terminals has been gradually...

AI Technical Summary

Problems solved by technology

However, due to the different control functions implemented by each industrial control terminal, the verification standard of the industrial control host cannot meet the security protection requirements of industrial control terminals with different control functions for data with different security features, resulting in too strict or too loose network security protection for industrial control terminals. , reducing the efficiency of network security protection

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