【摘要】 基于VPN技术的原理,重点分析、比较了L2TP、IPSec和MPLS三类协议,指出了各自优缺点和尚 待解决的问题,为实现VPN系统的最佳方案提供了参考.更多还原

【Abstract】 The concept and principle of VPN are introduced, and the three protocols (L2TP,IPSec,MPLS) are analyzed and compared with each other. The results presented in this article are useful for the optimal scheme to implement the VPN system. Besides, some problems, not yet to be solved, are put forward for probing further.更多还原