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Deep packet inspection method and device

A deep packet inspection and data packet technology, applied in the field of electronic information, can solve the problem that the system cannot detect network traffic normally

Active Publication Date: 2020-07-03
SHANGHAI EMBEDWAY INFORMATION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] This application provides a deep packet detection method and device, the purpose of which is to solve the problem that the system cannot normally detect the traffic in the network within a certain period of time when the application to be identified is updated

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  • Deep packet inspection method and device

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0057] figure 1 A deep packet inspection method provided in the embodiment of the present application includes the following steps:

[0058] S101. Detect and analyze the traffic at preset key points of the network and the content of network packets to obtain features to be matched.

[0059] In this step, the DPI engine detects and analyzes the traffic and network message content at preset key points of the network, for example, disassembles the network traffic, and extracts feature...

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Abstract

The invention provides a deep packet detection method and device, and the method comprises the steps: carrying out the detection and analysis of the flow and network message content at a preset network key point, and obtaining a to-be-matched feature; reading a json file which is generated in advance; wherein the json file is obtained by describing features of a data packet of the to-be-identifiedapplication through a preset description method; analyzing the json file to obtain features of a data packet of the to-be-identified application; whether the flow generated by the to-be-identified application exists in the flow is detected by detecting whether the to-be-matched feature conforms to the feature of the data packet of the to-be-identified application. The json file is separated fromthe deep packet detection program, so that the deep packet detection program does not need to be updated under the condition of application updating, the system does not need to be restarted, and theproblem that the system cannot normally detect the flow under the condition of application updating can be solved.

Description

technical field [0001] The present application relates to the field of electronic information, in particular to a deep packet inspection method and device. Background technique [0002] Network traffic includes protocols and network applications (for the convenience of description, hereinafter referred to as applications), deep packet inspection technology (Deep Packet Inspection, DPI) needs to perform deep packet analysis on network traffic, and can accurately determine the network traffic carried business type (i.e. application). [0003] At present, the identification rules of the applications to be identified are defined in advance, and the identification rules are implemented by using compiled language programming to obtain the identification program, so that the identification program is run in the process of deep packet inspection to identify the application data packets of the application to be identified. [0004] However, when the application to be identified is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/26H04L29/06H04L29/08
CPCH04L43/08H04L67/06H04L69/22
Inventor 马春强
Owner SHANGHAI EMBEDWAY INFORMATION TECH
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