虚拟私用网络是在公共网络的基础上建立一个临时的、私用的、安全的连接，它是对企业内部网的扩展。
Virtual private Networks is a temporary, private and secure tunnel based on the Internet. It is extension of company Intranet and Extranet.
虚拟私用网络是在公共网络的基础上建立一个临时的、私用的、安全的连接，它是对企业内部网的扩展。
Virtual private Networks is a temporary, private and secure tunnel based on the Internet. It is extension of company Intranet and Extranet.
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