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Research and Implemention of IP Packet Reinstall System Based on VPN

Author: MaTeng
Tutor: LuYing
School: Dalian University of Technology
Course: Pattern Recognition and Intelligent Systems
Keywords: Network Security TCP/IP IPSec Protocol Virtual Private Network
CLC: TP393.08
Type: Master's thesis
Year: 2011
Downloads: 4
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Abstract


The application of Internet has led to an ultimate revolution in information technologyfield. By more and more business activities are performed on the internet, informationsecurity becomes to be a key technology for enterprise business activity security. So how toprotect the information security of enterprises business activity is the focus of this work.VPN is use of open data communication network. Because of the security issue was notconcerned in the TCP/IP designing work, many internal faults are hiding in this protocol. Sodata in the IP data packet is easy to modify when it is transmitting on the internet. In order tosolve these security problems, the third level IP security protocol is developed by the IPsecurity protocol working committee, which is founded by IETF, called IPSec.IPSec is supported by many IT enterprises because of the IPSec protocol and IP protocolis using the same technology. But the IPSec protocol is not perfect, there is not uniformstandard about the research of the poor performance for anti-virus and security policy. Whenthe packets pass through the corporate security gateway, the security isn`t strongly protected,The original design schema cannot meet the enterprise application requirement of security andflexibility, so under the IPSec protocol, it is a research point that how to achieve the triplesecurity level authentication for enterprise data file transmitting application.This work is based mainly on IPSec framework, the use of NDIS technology, flexibilityfor enterprise data security certification request triple improvements. In chapter one, thedevelopment background is introduced. The architecture mode is discussed in chapter two, bymeans of which, every component of IPSec protocol stack is summarized. Based on theconclusion in chapter one and two, a new VPN secure gateway design schema is figured outin chapter three. In order to examine the performance of the new VPN gateway, a simulationexperiment is put into practice, the result shows that this design is security and easy to use.With the advantage of low expense, high flexible and usability, this design of securitygateway is prior to the traditional gateway with the improved IPSec VPN security issue. It isof great meaning of this design in the internet enterprise business security field.

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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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