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Virtual Private Network的核心就是利用公共网络建立虚拟私有网,它可以通过特殊的加密通讯协议模拟点对点的专用连接方式通过共享或公共网络在不同计算机之间发送数据,具有良好的保密性和不受干扰性。一个完整的VPN系统一般包括VPN服务器、VPN客户端、VPN数据通道、防火墙、隧道协议。典型的VPN连接方式有远程访问虚拟网、企业内部虚拟网、企业扩展虚拟网。
Virtual Private Network is the core of the use of public networks to establish a virtual private network, which can be simulated through a special encrypted communication protocol dedicated point-to-point connection through the shared or public network to send data between different computers, with good confidentiality and uninterrupted Sex. A complete VPN system generally includes a VPN server, a VPN client, a VPN data channel, a firewall, and a tunneling protocol. Typical VPN connection methods include remote access to virtual networks, intra-enterprise virtual networks, and enterprise expansion of virtual networks.