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Security Protection Method of OPC Protocol Based on Dynamic Tracking Technology

A security protection and dynamic tracking technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve the problems of being vulnerable to malware and attacks, and achieve the effects of ensuring security, good stability, scalability, and practicability

Active Publication Date: 2018-02-06
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the vast majority of OPC servers today operate without any firewall protection, making them vulnerable to malware and other security threats

Method used

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  • Security Protection Method of OPC Protocol Based on Dynamic Tracking Technology
  • Security Protection Method of OPC Protocol Based on Dynamic Tracking Technology
  • Security Protection Method of OPC Protocol Based on Dynamic Tracking Technology

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Embodiment Construction

[0027] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0028] In order to protect the security of OPC communication, and without changing the topology of the industrial control system, the present invention is used in the following situation: one end is connected to one or more OPC clients, and the other end is connected to one or more OPC servers. Data streams passing through both ends are processed to ensure security.

[0029] see figure 1 , showing the basic idea and implementation principle of the present invention's OPC protocol security protection method based on dynamic tracking technology, see figure 2 , showing the basic model flow chart and structure of the method, when the method of the present invention is implemented, the main flow of work is as follows:

[0030] Step 1: Use the Netfilter mechanism to capture traffic data packets, register hook functions, and intercept network inte...

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Abstract

The invention discloses a security protection method of the OPC protocol based on dynamic tracking technology. One end of the method is connected to one or more OPC clients, and the other end is connected to one or more OPC servers. Through the designed data capture, data packet parsing and analysis Afterwards, dynamic tracking and port authorization management are carried out to track the port content of OPC data packets. After the connection is established, the data packets flowing through are monitored based on ports and protocols to prevent illegal data packets from passing through. The device in this method only needs to be simply connected between the OPC client and the OPC server without other configuration operations, which can ensure the security of the OPC communication network.

Description

technical field [0001] The invention relates to a security protection method of an OPC protocol based on a dynamic tracking technology, and belongs to the field of industrial control network security. Background technique [0002] With the development of process automation, automation system manufacturers hope to be able to integrate different hardware devices and software products from different manufacturers, to achieve interoperability between devices, and to import data from the industrial site into the entire enterprise information system from the workshop level. OPC is an open standard for efficient data access and management, and flexible communication between various data sources in an industrial control environment. [0003] OPC is used in many fields such as power industry, petrochemical industry, building control, etc. It can effectively access and integrate many devices such as PLC, DCS, and Historian database. Its appearance is established for Windows-based appl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/26H04L29/06H04L29/08
Inventor 尚文利赵剑明万明张华良曾鹏于海斌
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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