Method for conducting P2P network identification through deep packet inspection technology

A P2P network and network technology, applied in the direction of data exchange network, digital transmission system, electrical components, etc., to achieve the effect of optimized identification process and easy realization

Active Publication Date: 2014-12-24
BEIJING SAPLING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] e) The system detection module needs to be upgraded irregularly

Method used

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  • Method for conducting P2P network identification through deep packet inspection technology
  • Method for conducting P2P network identification through deep packet inspection technology

Examples

Experimental program
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Embodiment 1

[0030] Embodiment 1 of the present invention provides a method for P2P network identification using DPI technology, including:

[0031] Step 202, measure the network to be identified, and obtain the topological range value of the host participating in the network, and the topological range value is the maximum topological distance of the host participating in data interaction in the network;

[0032] Step 204, judging whether the topological range value is greater than a preset first threshold, if so, proceed to step 206, if not, proceed to step 210;

[0033] Step 206, the host in the network to be identified receives the message, performs DPI processing on the message, scans the text therein, performs pattern matching, uses a state machine composed of regular expressions, and converts the content in the received text and Compare the modes in the state machine to determine the mode of the received message;

[0034] Step 208, if it is recognized that the message is a P2P messa...

Embodiment 2

[0039] The measurement topology range value in Embodiment 1 is specifically:

[0040] Step 2021, starting from any host, indicating that the range value of the host is 0, and taking this host as the current host;

[0041] Step 2022, obtain the range value of the current host, if other hosts that do not indicate the range value send data to the current host, then indicate that the range value of the host is minus one from the range value of the current host; if other hosts that do not indicate the range value send data from the current host If data is received, it indicates that the range value of the host is plus one from the range value of the current host;

[0042] Step 2023, jumping to any host that has a connection relationship with the current host and has marked a range value, taking this host as the current host, and repeating step 2022 until all hosts have marked range values;

[0043] Step 2024: Subtract the smallest range value from the largest range value among all...

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Abstract

The invention provides a method for conducting P2P network identification through the deep packet inspection technology. The method includes the steps that firstly, a topological range value of a network to be identified is judged, and if the value is larger than a first threshold value, a judgment is made through the DPI technology, and if the value is not larger than the first threshold value, a specific value of the input data size to the output data size within certain time is judged. By the application of the technology, an identification result can be more accurately and rapidly acquired in flow identification, the identification procedure is optimized to a great extent, and the method can be achieved easily in existing equipment.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a method for deep packet detection. Background technique [0002] With the continuous development of new network applications based on the P2P (peer to peer) traffic model in recent years, the consumption of network bandwidth resources has been accelerating, and traditional online services have also been increasingly impacted and affected. P2P itself is a very good technology with broad application prospects, but at the same time P2P is also a very lethal technology. At present, most of the P2P-based applications are bandwidth-depleting download services, which exhaust the originally abundant access, convergence and backbone bandwidth resources, and the network links are often at full load, resulting in the deterioration of network service quality (packet loss Rate, delay and jitter are greatly increased), which greatly affects the development of some voice, video and game...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/08H04L12/26H04L12/801
Inventor 苏长君郑曙光
Owner BEIJING SAPLING TECH
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