设计安全并且开销小的企业网络是当代企业信息化建设的重要基础。本文首先研究了虚拟私网的安全原理,并完成基于虚拟私网的企业网络安全架构设计,给出企业虚拟专网技术的基本架构,分析了多虚拟网络的企业网络安全策略,并给出虚拟私网下的企业网络安全架构实现过程。 The design of a secure and inexpensive enterprise network is an important foundation for the construction of modern enterprise informatization. This paper first studies the security principle of virtual private network, completes the design of enterprise network security architecture based on virtual private network, gives the basic architecture of enterprise virtual private network technology, analyzes the enterprise network security strategy of multi-virtual network, and gives the virtual Private network under the enterprise network security architecture implementation process.