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Research of Virus Filtering Firewall Technology Based on Signature Word

Author: DuFei
Tutor: WangJingZhong
School: North China University of
Course: Applied Computer Technology
Keywords: Virus filtering firewall Virus signature word Bloom filter A three - dimensional structure of the Bloom filter Hash algorithm
CLC: TP393.08
Type: Master's thesis
Year: 2010
Downloads: 58
Quote: 0
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Abstract


In order to improve the filtration rate of the virus filtering firewall , virus filtering methods based on the character of the word . NDIS intermediate driver filtration technology , packet flows through firewall port, protocol and MAC address filtering feature words , the data portion of the packet at the network layer , in accordance with the idea of hierarchical filtering , virus filtering ; keywords virus filtering at the application layer , packet based on the HTTP protocol , web page content . Virus filtering methods in the character of the word , the Bloom filter algorithm to improve the filtration rate , in theory, the algorithm model is extended to three-dimensional , for said support huge data collection and Find . Collection equivalence To treat differently collection operation consideration of different elements , divided and different number of hash functions to achieve query lowest total consideration . The set partitioning genetic algorithm to solve the model , the maximum entropy distribution genetic algorithm as the initial search point , numerical validation results show that the algorithm has good efficiency, the optimal solution in search near . This paper designs and achieve a filtering capabilities based on the character of the word virus the firewall ( antiVirusFW ) . The firewall to monitor network traffic , filtering viruses on the network and transport layers , based on the URL , keywords and time access control function , the system runs stability , to achieve the desired effect .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Computer applications > Computer network > General issues > Computer Network Security
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