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The P2P Controler Based on the DPI Technology

Author: WangQian
Tutor: LiuDan
School: University of Electronic Science and Technology
Course: Applied Computer Technology
Keywords: DPI P2P Protocol Traffic Identification Packet Interception
CLC: TP393.06
Type: Master's thesis
Year: 2013
Downloads: 15
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Abstract


In the last few years, along with the development of internet flying start, there areplenty of network industries booming greatly. The prosperous network market bringsabout a large quantity of telecommunication modes as well as network applications. TheP2P technology has been widely used under this circumstance which is welcomed bythe network application manufacturer because of its high download rate and convenientcommunication and other aspects. Lots of P2P production has come into being since2000which has great number of registers in a pretty short time. The P2P network usingthe peer to peer transmission ways has increase the performance of network. Comparingto the other ways of transmission, the P2P has been normally used by net vendor for itslow costs. However, the booming outcome of P2P application brings a lot of problemsand it greatly influences the using of internet. The main problem is taking up majoritybandwidth. The research shows that especial active users occupying almost70%of thebandwidth, which blocking the internet in the considerable degree.The key to release the using of bandwidth is to identity P2P protocol effectivelyand correctly. But the P2P applications are difficult to identity because the tagged wordsare impossible to find with the traditional ways. As the results, we use the DPItechnology to test the information in the payload. When designing the original system, Icombine the other none P2P identification methods and research the ways to extractcharacters based on the needs of the original system. The main work of the thesis is tofind the effective way to identity P2P protocol, take effective measures to distribute thebandwidth, handle the packet, and solve the problem of network block. The inovationpoint of the thesis is the proved regular matching method which effectively realises theclassification of packets, otherwise, through the interaction mode, the original systemcan handle the network flexibly. The content include following points:1. Analyze the character of P2P protocol, morph structure, the mechanism toestablish connection, strong points and weak points.2. Analyze the ways to identity P2P flow combining the structure combing theresearch condition in and out of the country. Put forward the improving DPI algorithm to solve the problem.3. Design a P2P protocol controller original system based on DPI to realize to rightidentity the P2P protocol and learns the Linux kernel modes on network communication.Establish the test environment, through the test we can see that the controller can countthe using situation of network and release the bandwidth, improve the using rate ofinternet.

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer networks, test , run
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