The Key Technologies Research And Design Of SSL VPN

SSL VPN is a powerful new VPN technology. With the multiformities of internet application, the demand on the security of remote access make obvious day by day . Today, classic IPsec VPN for secure remote access often proves not to meet the demand, while the three advantage of SSL VPN are namely: simple to install and to configure, clientless and high compatibility, SSL VPN can make up the flaws of IPsec VPN, Which it becomes the hotspot of the researches on VPN technology.In this paper, we have deeply and systematically studied the concept, the primary principle, the working mode and the key technologies , and we have designed the SSL VPN and developed the key module of it. The main work of this paper is as follows:1, Compared SSL VPN and IPsec VPN , which supports to point out the limitations of the traditional SSL VPN in application and to put forward the corresponding solution. And mainly studied the key technologies of SSL VPN.2, Analyzed the SSL protocol and improved it , which added the SSL Control protocol so that formed the secure and effective highly security tunnel protocol and made up the main flaws to support the VPN. Finally, described the analysis of SSL protocol improved using BAN logic and proved it secure.3, On the basis of the designing of the SSL VPN system .combining the SSL Control protocol, proposed the implementation of the role access control, designed an SSL VPN server. And designed the SSL Control protocol, and studied the key questions considered to implement the SSL VPN server.4, Explored the SSL VPN client implemental technologies , and designed and implemented an SSL VPN client using Java Applet, which supports B/S applications and C/S applications.In summary, this paper has done the thorough research in the SSL VPN key technologies and the system structure, which built the foundation of the development and the practical application of SSL VPN.