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EPA network safety management entity ad safety processing method

An industrial control network and safety management technology, applied in the field of safety architecture, safety control algorithm and safety management entity, can solve the problems of real-time, reliability, high stability requirements, limited computing resources and computing power, etc., to achieve safety The effect of loss reduction

Inactive Publication Date: 2007-11-14
CHONGQING UNIV OF POSTS & TELECOMM
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AI Technical Summary

Problems solved by technology

However, due to the high real-time, reliability, and stability requirements of industrial field network equipment such as sensors, actuators, and controllers, and the limited computing resources and computing power, how to ensure the security of industrial control networks such as EPA has become an urgent solution. The problem

Method used

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  • EPA network safety management entity ad safety processing method
  • EPA network safety management entity ad safety processing method
  • EPA network safety management entity ad safety processing method

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Experimental program
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Embodiment Construction

[0017] 1. EPA network layered security control system structure

[0018] Figure 1 shows a schematic diagram of the layered security structure of the EPA system. 1) The firewall at the EPA monitoring layer is a secure interface device for accessing the EPA control network from the external network (including the enterprise management network), and implements boundary protection for the EPA system.

[0019] 2) The EPA safety network bridge is a safety interface device connecting the process monitoring layer and the field device layer, and implements boundary protection for the field device layer. Some EPA safety network bridges also have protocol conversion functions, and the EPA safety network bridge can be placed on site In the EPA bridge, EPA switch, or EPA hub on the L1 network segment at the device layer.

[0020] 3) The EPA safety network bridge has dual nature as the interface between the process monitoring layer and the field device layer. For the L2 network segment of t...

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Abstract

This invention provides EPA network safety management unit and process method, which contains pointing out layered and classified safety strategy, establishing relative EPA network safety management system according to network environment, different measurer can be carried by EPA network safety management unit, IP message control management unit and EPA safety information base, said safety measure containing EPA cipher key production and management method, EPA equipment identifying, EPA message check, EPA message enciphering, EPA accessing authorization, and EPA message filtering etc.

Description

technical field [0001] The invention relates to a safety technology suitable for industrial control network, in particular to the safety system structure, safety control algorithm and safety management entity of the industrial control network. Background technique [0002] As an open system, the industrial control network EPA may be subject to malicious or non-malicious threats such as intrusion, destruction or replay, which brings security problems to the control network, such as viruses, information leakage and tampering, and system unusability. To this end, necessary safety measures and tools must be taken to ensure that the EPA system can operate safely in an open environment and protect internal systems, resources and normal production order. However, due to the high real-time, reliability, and stability requirements of industrial field network equipment such as sensors, actuators, and controllers, and the limited computing resources and computing power, how to ensure t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/24
Inventor 王平王浩陈敏娜余淑军陈云张健干开峰
Owner CHONGQING UNIV OF POSTS & TELECOMM
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