【摘要】 针对VPN的分类问题,讨论了VPN所基于隧道技术,包括系统的组件,目前常用的协议,以及它们在不同网络操作系统下的client/server实现。最后,指出了VPN的整体实现要求和网络模型。更多还原

【Abstract】 In terms of the taxonomy of VPN, this paper discusses the underlying tunneling technology of VPN including system components, popular protocols at present, and the actualization of client/server in different NOS. Finally, it presents the requirements for the overall actualization of VPN and network model.更多还原