基于TUN设备的P2PVPN设计
Exploration of P2PVPN Ideas Based on TUN/TAP Technology

在大数据时代背景下，隐私保护和网络安全问题受到广泛关注。为应对挑战，本文提出了基于TUN设备的点对点虚拟专用网络(P2PVPN)设计方案，利用TUN设备构建虚拟网络接口，并采用分布式路由表管理节点间通信。该方案采用了基于ed25519非对称加密的去中心化网络节点结构，提高数据传输安全性，具备跨平台运行能力，实现高通用性。实验验证表明，该设计在性能和安全性方面优异。与传统VPN相比，P2PVPN允许用户在无需第三方服务器情况下进行点对点通信，因此可以完全抵御DoS攻击，使数据传输更加安全稳定，为用户带来灵活、可靠、高效的P2PVPN服务体验。
Privacy protection and network security concerns have received widespread attention in the context of the big data era. This paper proposes a design scheme for a point-to-point virtual private network (P2PVPN) based on TUN devices to address these challenges. The scheme employs TUN devices to create virtual network interfaces and utilizes distributed routing tables to manage communication between nodes. In addition, the proposed solution adopts a decentralized network node structure that is based on ed25519 asymmetric encryption to enhance data transmission security. The design offers cross-platform operability and boasts high versatility. Experimental verification indicates that the proposed P2PVPN design exhibits excellent performance and security. Furthermore, in contrast to traditional VPNs, P2PVPN enables peer-to-peer communication without the need for third-party servers, rendering it impervious to DoS attacks. As a result, data transmission becomes more secure and stable, providing users with a flexible, reliable, and efficient P2PVPN service experience.