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Research on Protocol Analysis Based on Content Audit

Author: NieJuan
Tutor: HuLiang
School: Jilin University
Course: Applied Computer Technology
Keywords: Content Audit Protocol analysis Pattern Matching
CLC: TP393.04
Type: Master's thesis
Year: 2011
Downloads: 45
Quote: 0
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Abstract


Content Audit is the real-time detection of network happening , and on the recording and analysis of network packets , based on the contents of the packet to discover the content and behavior of the network in the presence of non-compliance , and record the content and behavior alarm and blocking . Network Information Content Audit blend of computer networks , data mining , natural language processing , audit detection of complex networks , artificial intelligence and other areas of technology and network transmission of various types of information , strict monitoring illegal and unhealthy information network the spread . Content audit system consists of data capture , and protocol analysis , data stripping , data auditing and systems in response to the five areas . Protocol analysis plays an important role in the content audit system . Only correct analysis of the protocol used in the data transmission , in order to peeling on the data , and thus the data audit . Firstly crawling a large number of packets based on application layer protocol BitTorrent , eDonkey, PPLive and QQ agreement in-depth analysis , revealed during the communication between the server and the client as well as between the peer and peer ( or process between the client and the client ) and interact with each other , to find out to identify uniquely identifies the agreement signature , and the signature of these agreements are summarized ; followed by the model set of strings of pattern strings between before suffix feature analysis , a two-way multi - pattern matching algorithm , and a detailed description of the algorithm to do ; Finally, the experiments had much better the new algorithm in the time complexity and space complexity and finally the new algorithm for protocol analysis tools into the new design , high protocol recognition rate and low false positive rate .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Communication protocols, communication protocols
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