The Research And Application Of VPN Technology In The Enterprise Information

Today,in the time of speedly development information technology the competetion of companies not only between manufacture capital technology, but also between high-level management, management depend on decision-making. the modern company's decision-making come out from platform of information. the state's tenth-five programes say: accelerating industry with information,promote its advantage to realize jumping development of social production. the construction of company's information be attached importance more and more. many companies build-up hard-ware equipment,such as interior web system. put in practice kinds of managing information system , ERP,CRM,SCM and so on. put in practice kinds of managing information system , ERP,CRM,SCM and so on. First ,build a basic web system i.e intranet.The thesis will offer a safe,speedly,saving network project for companie's intranet through researching VPN technology in industrial information. there are many kinds of project for building intranet, especially relative to long-distance internet web, we used to log in internet with traditional method ,such as dial MODEM or DDN. The DDN especial line privileged safety fast and high stability,but the line-rent so expensive exceed more little and middle companies burden. the large companies will pay high expenses for construction and monthly rent too,rise the cost of the company management. DDN usually accepted by government and secret department. the MODEM stability but be short of safety. the long-distent dial expenses high ,be eliminated now.the other methods few be used due to shortage of interface on man-machine.only VPN have realized long-distence network in company branches with the tunnel encrypt technology via internet web channel.the intranet by VPN is quickly stabale and high safety.more is the advantage of cheap cost.Generally,the application of VPN in basic construction of company informationlize system ,is a stable economic and practical scheme. Building up the safe economic and fast information highway have reality value for companies. it is very significance for popularization of company informationlize.The paper discusses the above contents in six chapters The first chapter is introduction about the project background, objective, purport and the research manner of this paper.The second chapter is the part of network basic theories, which introduces the network basic theories on the appliance of enterprises information. It is including the network communication technology, Internet applied technology, LAN technology, network security management technology. Especially it emphasizes to clarify VPN technology. VPN technology brings a well-rounded program to build enterprises internal network on the base of above theories.In the third chapter the paper analyses the status and requirement of enterprises information. And it studies the problems which enterprises would be faced with in the process of building information system. For example, enterprises would meet the problem of the remote access with the branch, the problem of management software running between the remote and intranet.With the development of enterprises, the appliance of management software, it is very important how to strengthen efficiently to control the internal network. The remote network visiting, the transportation of a large amount of data and the operation of enterprises internal network would bring the risk of wiretapping, tampering, loss, virus infecting to the system. So the enterprises would manage to solve the network security hidden trouble. On the other hand the enterprises must consider the cost factor of building and operating the information system.In the fourth chapter the paper discusses the application of VPN technology in the enterprises information, VPN enable a company to achieve remote users in different locations Remote Access, the intranet establishing by VPN technology can work the management and office system well quickly and stably. VPN technology can solve well the network security trouble for VPN is a security agreement of encrypting tunnel. Through the VPN center management system the enterprises can control the network well. In the meanwhile VPN has more advantage on the information system building.In the fifth chapter it explains the VPN application in different enterprises. According to the characteristic, requirement of different enterprises and the network status we can work out the best network program.In the sixth chapter it makes a summarization and gets the conclusion: the intranet using VPN technology has great stability, reliability, security. Comparing with traditional leased-line DDN, VPN has more advantage in flexibility, development and low cost. With the high stability, high security, high flexibility, high controllable and low cost, the VPN technology becomes a reliable safe and economic solving program in the nowadays.