Vpn Technology And It’s Application In Henan Tietong

In the tide of world economic integration, China’s economy has experienced30years of rapid development, more and more Chinese enterprises are also gradually developed into a regional, even across national borders with many branches of a leading industry enterprise. How to connect the company headquarters and numerous branches together? How to construct a fast, flexible, extensible enterprise network? How to provide strong IT support for the enterprise’s business development? All these questions must be solved so that the enterprises can live long。The traditional pattern using the traditional leased line (Leased Line) to set up enterprises network, has not already adapt to the enterprise development pattern in this informational era. A new technology should be taken to meet this demand, and virtual private network (VPN Virtual Private Network) technology is just a good choice to satisfy this demand.VPN is1990’s computer communication technology, it is a major breakthrough, it appears to the enterprise network construction model has brought about tremendous changes. This paper first introduces the research background, VPN at home and abroad research situation, and then on the principle of VPN technique, discusses the definition, introduced the VPN tunnel types, from the operating mode, business applications, network type, protocol implementation levels of VPN are classified; then it focus on IPSec VPN technology the principle, system structure, IPSec VPN protocol principles and different packaging methods were analyzed, and from the business promotion application perspective is given by IPSec VPN business adapt to the scene; then gives the IPSec VPN application cases in China TieTong Henan Branch, documented column gives the IPSec VPN program design needs analysis, network design, equipment selection and network maintenance and other aspects of the content; At last, with many years VPN business experience, I give the prospect of VPN technology’s development.