中文摘要：

针对移动VPN的移动性与认证安全问题进行了研究,对比分析了现有的移动VPN安全解决方案。提出了一种基于非对称隧道模式的改进策略,使移动IP协议与IPSec VPN之间能够达到兼容。在满足了VPN用户移动性需求的同时,还对方案的可用性及安全性进行了讨论。

英文摘要：

Mobility and authentication security issues of mobile VPN technology are discussed.Some current solutions of security based on mobile VPN are also analyzed.Based on the research of existing solutions,an improved MVPN scheme based on asymmetric tunnel model is proposed to integrate the mobile IP and IPSec VPN.At last,the availability and security of this solution are discussed.