SSL VPN Technology Application

With the development of Internet,online communication and trading have become an essential part in the workplace, where heavy emphasis will be placed on keeping information and data transferred across Internet secured. As a new-generation security technology, VPN (Virtual Private Networks) can provide easy to use, low cost, secure and reliable Internet accesses, and create private network connections over public networks.VPN based on Secure Socket Layer (SSL) protocol is researched in this paper. SSL VPN is a new technology in VPN research field. And it's application and exploitation will be developed well in the future. VPN theory is introduced as a base in this paper. The structure of SSL protocol and the function principle of SSL VPN system are dissertated. The method that SSL VPN solve secure problem such as authentication, key-exchange, cryptography and data digest is researched as emphases in this paper. Practical arithmetic that will be applied to building campus VPN later is analyzed here.Campus network is an important base of researching network technology Based on the analysis of the actual network structure of HuaLi collage campus network, the campus VPN system is designed and built. This system adopted SSL VPN technology, which solved two problems in our campus network. First, there are more than one campus areas in a University. But the resource is often centralized in the main campus area network. Building campus area Intranet VPN using SSL VPN technology is the cheapest way, which make intramural resource share come true. Second, teachers often work out of campus, which need access intramural data of campus network. Building long-distance access VPN is the simplest way to solve this problem. Testing of the campus VPN system verifies the availability of the plan to some extent. It is proved that VPN can break the regional limit of the campus network and give better administration means of the campus network.