Method and system for security protection of industrial control network

Abstract

The invention discloses a method and system for the security protection of an industrial control network. According to the method, the industrial control network is divided into at least two sub-network layers, wherein a firewall is arranged between the industrial control network and external networks, and a security protection module which controls data transmission among the sub-network layers is arranged in the industrial control network. The method comprises the following steps that the security protection module intercepts data messages transmitted among the sub-network layers; the security protection module judges whether operations requested by the data messages meet preset conditions or not; when judging that the operations do not meet the preset conditions, the security protection module interrupts the transmission of the data messages; when judging that the operations meet the preset conditions, the security protection module removes data with potential security risks from the data messages, and then transmits the data messages, from which the data with potential security risks are removed, to destination sub-network layers corresponding to the data messages. Through the method, the security and reliability of the industrial control network can be improved.

Description

technical field [0001] The present invention relates to the technical field of industrial control system network security, and more specifically relates to a method and system for protecting industrial control network security. Background technique [0002] The industrial control system is composed of various automatic control components and process control components for real-time data acquisition and monitoring. Industrial control systems have been widely used in industries, energy, transportation, water conservancy and other fields to control the operation of production equipment. [0003] With the integration of informatization and industrialization, the security issues of industrial control systems have become increasingly prominent. Once a security breach occurs in the industrial control system, the possibility of the industrial control system being attacked by viruses, Trojan horses and other threats increases, which in turn makes the industrial generation control pr...

AI Technical Summary

Problems solved by technology

Due to the lack of protective measures, once the firewall between the enterprise management and the external network is breached by an attacker, the internal network of the industrial control system will be easily controlled, so that data such as production materials in the industrial control system will be stolen. Or field equipment is maliciously manipulated, affecting normal industrial control

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