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Safety detection method based on self-adaptive traffic control

A flow control and safety detection technology, applied in digital transmission systems, electrical components, transmission systems, etc., can solve problems such as lack of foresight and inaccurate control granularity

Active Publication Date: 2020-07-17
CHINA NUCLEAR POWER OPERATION TECH +2
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  • Abstract
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Problems solved by technology

Only through the method of limiting the number of processes or threads, the control granularity is not accurate enough, not forward-looking, and it is impossible to avoid the rapid concurrency of traffic introduced during the detection process, resulting in a negative impact on the business of the industrial control system under test, such as the existence of the Modbus protocol and the DNP3 protocol. Particularity, these two protocols will poll the function code to obtain detection information, which will cause a sharp concurrency of detection data flow within a period of time; and the incoming flow is positively correlated with the number of detected devices

Method used

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  • Safety detection method based on self-adaptive traffic control
  • Safety detection method based on self-adaptive traffic control
  • Safety detection method based on self-adaptive traffic control

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Embodiment Construction

[0032] see figure 1 Module relationship diagram, the whole system includes adaptive scheduling module, traffic forecasting service and network port traffic real-time monitoring module, the core module is the self-adaptive scheduling module, which obtains the traffic prediction value from the traffic forecasting service module through the interface, and monitors the traffic from the network port The module obtains real-time traffic values ​​for scheduling. The specific steps of the detection method are as follows:

[0033] 1) Construction of traffic forecasting service, such as image 3 As shown in the schematic diagram of traffic forecasting service, the forecasting server continuously collects a large amount of test data and stores them in the database, and cleans the data (removing data with abnormal collection or storage such as null values), using "detection task type" and "detected device Quantity" as a feature, establish a prediction model, use a large amount of collect...

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Abstract

The invention relates to the technical field of industrial control safety, in particular to a safety detection method based on self-adaptive traffic control. At present, most of active fingerprint detection technologies adopt a multi-task mode for scanning detection, and limit the traffic of introduced detection packets in a mode of limiting the number of multiple processes or multiple threads, and the control granularity is not accurate enough and has no prospectiveness only through a method of limiting the number of processes or threads. The method comprises the steps of self-adaptive scheduling, traffic prediction and network traffic real-time monitoring. The traffic prediction specifically comprises the following steps: 1, data cleaning; 2, feature selection; 3, model establishment; and 4, model training. The equipment fingerprint detection realized based on the method has the advantages of no interference to the service traffic of an industrial control system, no traffic wave crest and stable traffic velocity.

Description

technical field [0001] The invention relates to the technical field of industrial control safety, in particular to a safety detection method based on adaptive flow control. Background technique [0002] In the field of industrial control security, device fingerprinting is a technology that uses different information to describe devices or software running in the network. The device fingerprint information includes the hardware used to identify the device, the operating system, the running software and its related version number, and configuration parameters. [0003] Device fingerprint detection methods are mainly divided into two categories: active and passive. Active fingerprint detection requires the detection system to send various types of industrial protocol packets to actively scan the detection network system to obtain information. The traffic introduced by active scanning may cause the network to be busy and the system overloaded. The passive fingerprint detection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L12/26H04L12/863
CPCH04L41/147H04L41/145H04L43/0876H04L43/16H04L47/50
Inventor 高汉军徐霞军曲鸣赵磊张登王略鲁星言刘敏尹飞祁武振许克珂刘学科王俊凯谭天然聂文邓玉要韦达屠芮徐继龙袁森蔡宏林滕俐军
Owner CHINA NUCLEAR POWER OPERATION TECH
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