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Design and implementation of packet filtering content regulation system

Author: LiTianMei
Tutor: LiuMing
School: University of Electronic Science and Technology
Course: Computer Software and Theory
Keywords: Network content regulation Monitoring points Module Datagram
CLC: TP393.08
Type: Master's thesis
Year: 2011
Downloads: 21
Quote: 0
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Abstract


With the growing popularity of the Internet , its dissemination of the contents of the health and safety issues have become increasingly prominent , these problems seriously affect social stability and endanger people 's physical and mental health . Necessary regulatory information content on the Internet , has become an urgent requirement of government agencies and regulatory agencies , and for promoting the healthy development of the Internet , and advocate of the network civilization and socialist morality , but also have a positive and important role . To actively monitor the content of online information in order to prevent the spread of illegal information on the Internet , so as to protect the security of network information , has become an important issue of the relationship between social stability . This article is designed according to the reality of the environment and the needs of users and to achieve a set of online content regulation system based on the Linux system . The main objectives of content regulation system content regulatory control of network traffic at the gateway of a unit to focus on units or enterprises within the illegal Internet content leak , early detection of the hidden Trojan Internal theft software , ensuring information security units or enterprises to create a healthy and a good Internet space . Network monitoring point is the basic unit of content regulation system , it mainly consists of five library modules : system management module , the data packet control library module the pretreatment library modules , library modules of content regulation , the interface control library modules . Control library modules of data packets and pre-processing library module system design and implementation of the work I completed . Control library modules for data packets using a raw socket programming to capture packets on the network ; datagram monitoring algorithm for pretreatment library modules , designed primarily to generate data the reported filtering rules algorithm and delete filter rules algorithm. The above two points can be said to me in the innovation of this paper . For the purposes of this article , the main use of the structure of the TCP / IP protocol suite , network programming , Linux system threaded programming knowledge . Found through testing , of the contents regulatory system basically can play the role of the illegal monitoring of Internet spam , so as to protect the security of the Internet .

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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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