The Design And Realization Of Liaoning Green Sunshine Group VPN Network

Recently the network technology is developed greatly, VPN is becoming a new developing direction because it combines the merits of traditional dgital-network (secret, private and QoS) and shared public digital network (simple and lower cost). This technology has tremendous vitality and potency.LiaoNing Green Sunshine Group headquarter has established the local area network of official business .However, though information of order, wares circulation, checking, finance are needed as basis of making judgment, purchasing goods, planning for productions and transferring, there is no private network connection between retail departments, branches and the headquarter. The Green Sunshine Group has raised the requirement of safety, moderate investment, easy operation and maintainence, short-term establishment, flexibility and mobility, the capacity of connecting and visiting private sites across areas and operators, etc. By comparing the traditional physical special network and the virtual private network (VPN), we decide to apply the virtual private network for the project. And by systematical research and analyze toward VPN, this article compares its various tunnel protocol step by step, the way of realizing the software and hardware of IPSecVPN, and finally decides on the project of software IPSecVPN. This article gives an overall introduction to the specific software-Secure VCN, also a further elaboration of the project designing discipline, content, implement processures and effects. According to the effect, VCN technology has satisfied the requirement of LiaoNing Green Sunshine Group completely. It is approved and praised by the User. At the same time, as the first successful case of applying VCN echnology in LiaoNing province, it adds precious experiences to CNC's opening up the communication market of middle and small sized-companies.