基于TUN/TAP与UDP打洞技术的虚拟局域网  

A VIRTUAL LOCAL AREA NETWORK BASED ON TUN/TAP AND UDP HOLE PUNCHING TECHNOLOGY

作　　者：龙湘君[1] 邵栋[1] 荣国平[1] 

机构地区：[1]南京大学软件学院,江苏南京210093

出　　处：《计算机应用与软件》2011年第7期224-226,280,共4页Computer Applications and Software

摘　　要：在Internet中,位于不同局域网里的用户,由于没有有效的公网IP地址,彼此之间不可见,彼此之间无法进行直接通信。提出一个基于TUN/TAP与UDP打洞技术的虚拟局域网系统,该系统将多个分散的Internet用户连成一个虚拟的局域网,用户之间可以互相通信,基于IP的网络应用程序不需要进行任何修改,就可以正常工作。跟现有的VPN系统相比,它不需要服务器中转通信数据;另外它是在网络层上解决通信问题,这跟针对具体应用的P2P系统是不同的。On the internet,users located inside different local area networks are invisible to each other and unable to communicate directly for not possessing effective public IP addresses.This paper proposes a virtual local area network system based on TUN/TAP and UDP hole punching technology that gathers dispersed Internet users together into a virtual local area network,inside which users can communicate with each other while existing IP-based network applications can work fine without any modification.Compared with existing VPN systems,the novel system does not require the server to relay communication data.Meanwhile different from common P2P systems which handle communication problems on the application level the novel solution works on the network layer.

关 键 词：TUN/TAP VPN 虚拟局域网 UDP打洞 P2P 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]