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虚拟专用网络（ＶＰＮ）是实现在公网上安全传输私有网络信息的一种技术，ＶＰＮ技术在校园网中的应用，提高了校园网的可管理性、灵活性和安全性。
Virtual Private Network (VPN) is a technology that can realize the private network information transmission on public network safely. The application of VPN technology in campus network improves the manageability, flexibility and security of campus network.