Device for safely isolating and exchanging industrial control networks

An industrial control network, security isolation technology, applied in the field of industrial control network security isolation switching devices, can solve the problem of not being a network isolation technology, unable to eliminate link connections, etc., to reduce switching time, improve system reliability and data exchange rate , the effect of reducing hardware cost and complexity

Inactive Publication Date: 2015-04-01
AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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  • Abstract
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Problems solved by technology

Any data exchange technology based on communication protocols cannot elimina

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  • Device for safely isolating and exchanging industrial control networks
  • Device for safely isolating and exchanging industrial control networks
  • Device for safely isolating and exchanging industrial control networks

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Embodiment Construction

[0030] Figure 1 to Figure 4 It is a specific embodiment of the present invention. The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] like figure 1 As shown, the "2+1" structure system is adopted, including the external network processor, the internal network processor and the isolated switching unit. connected.

[0032] The hardware architecture adopts a "2+1" structure, that is, a dual system + isolated switching unit model, and the dual systems each have an independent operating system; in order to overcome the shortcomings of low data exchange speed and long delay time of traditional network security isolation products, PCI The bus is used for data transmission, and memory reflection technology is used to realize data storage and forwarding.

[0033] The external network processing machine and the internal network processing machine are symmetrical structures, and all at least include: ...

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Abstract

The invention discloses a device for safely isolating and exchanging industrial control networks and belongs to the technical field of security of the industrial control networks. A '2+1' structure system is adopted; the device comprises an external network processor, an internal network processor and an isolating and exchanging unit, wherein the isolating and exchanging unit is of a two-channel structure based on a bus and is connected with the external network processor and the internal network processor by virtue of an PCI bus. According to the device, the bus-based two-channel isolation control technology is used for opening and closing two channels in real time; bidirectional data transmission of the internal network and the external network is converted to two unidirectional data transmissions; the safe isolation of the internal network and the external network is ensured from hardware and software; many security problems in the bidirectional transmission of the same system in the conventional security technology are solved; meanwhile, the hardware cost and the complexity are reduced; the system reliability and the data exchange rate can be increased; the switching time is shortened.

Description

technical field [0001] The invention belongs to the technical field of industrial control network security, in particular to an industrial control network security isolation switching device. Background technique [0002] The industrial control system is responsible for the continuous control of the production equipment, which has uninterrupted high reliability requirements and undelayed high real-time requirements. At present, for the security protection of some industrial control networks, although various complex protection technologies are used, such as firewalls, intrusion detection systems, virus walls, etc., these mechanisms are all logical protection mechanisms. Due to the existence of communication links, for logic It is possible to be manipulated as an entity; at the same time, due to the extreme complexity and limitations of the logic mechanism, the online analysis technology formed cannot meet the needs of high-speed information exchange and real-time requirement...

Claims

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Application Information

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IPC IPC(8): H04L29/06
CPCH04L63/02H04L49/102H04L63/1433H04L63/20
Inventor 王丽娜赵永丽孙希艳
Owner AUTOMATION RES & DESIGN INST OF METALLURGICAL IND
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