An industrial control protocol adaptive depth detection device and method
An industrial control protocol and in-depth detection technology, applied in digital transmission systems, data exchange networks, electrical components, etc., can solve problems such as multiple CPU resources, slow speed, and inability to dynamically adapt to on-site conditions, so as to solve the problem of occupying more CPU resources. Effect
Active Publication Date: 2019-12-10
CHINA ELECTRONICS CORP 6TH RES INST
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Problems solved by technology
Although it can realize the function of monitoring and controlling the communication flow of the application layer, its speed is slow and consumes too much CPU resources, making the protection device a bottleneck of security protection
Especially when the CPU resources of the protection device are too large and the interface traffic is too large, the processing speed is too slow, and the security protection device becomes a response bottleneck. Filtering and analyzing all data results in too slow speed, and there is a large delay in data exchange. It does not meet the real-time requirements of the industrial control system, seriously affects the industrial control field network, and even causes network paralysis, cannot dynamically adapt to the field situation, resulting in irreparable losses
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[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0047] An industrial control protocol adaptive depth detection device, installed on a standard rack, set between the industrial network and the protected equipment, the composition of the device is as follows figure 1 As shown, including: CPU, internal memory, Flash memory, 1 WAN interface, 4 LAN interfaces, 2 serial interfaces. The central processing unit is respectively connected with the internal memory, the Flash memory, the WAN interface, the LAN interface and the serial interface. in,
[0048] The central processor is the operation control center, which is used to coordinate and control the work of various parts of the circuit, and realize the adaptive depth detection function of the industrial control protocol by running the software program. The central processor adopts SparcV8 architecture, including two DDR slots, each supporting 512MB of me...
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The invention relates a self-adaptive depth detection device of an industrial control protocol and a method. The device comprises a central processing unit, an internal memory, a Flash memory, a WAN (wide area network) interface, four LAN (local area network) interfaces and two serial interfaces; the method comprises detecting whether an industrial control protocol data packet is legal grade by grade; detecting the state index of a protected device; carrying out self-adaptive detection adjustment: automatically adjusting the detection grade of data packet depth detection, namely carrying out degrading adjustment according to a network state grade by grade according to the detected state index and the detection grade adaption rule configured by a user . Through carrying out dynamic self-adaptive analysis to the actual working condition of a security protection equipment and dynamically adjusting the security protection grade according to user configuration and the state of the protection equipment, the invention solves the problem existing in the prior art that excessive occupancy of CPU (Central Processing Unit) resource and excessive interface flux cause equipment breakdown.
Description
technical field [0001] The invention belongs to the field of industrial control system safety, and in particular relates to an industrial control protocol self-adaptive depth detection device and method for industrial control safety protection. Background technique [0002] In the existing technology, the security protection of industrial control systems is generally deployed in a layer-by-layer protection manner, that is, specific protection measures are set at any position on the attack path, such as the entrance of the enterprise network, the network entrance of the monitoring layer, and the network entrance of the field layer, to block In order to realize the protection of the field layer with the highest security level, industrial control security protection equipment must be able to support various fieldbus communication protocols, disassemble data packets layer by layer, deeply analyze the packet structure and packet content, and ensure the legitimacy of the packet, th...
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IPC IPC(8): H04L12/26H04L29/06
CPCH04L43/08H04L43/50H04L63/02
Inventor 刘仁辉郭肖旺刘红霍玉鲜
Owner CHINA ELECTRONICS CORP 6TH RES INST