说明：  本论文首先在基于对网络穿透中常用的代理技术、加密隧道技 术、匿名通信技术等原理的分析基础上，针对常用工具Privoxy、 Stunnel、TOR做了详尽的剖析和研究。并在此基础上，设计并实现 了穿透代理系统PROProxy。
(Firstly,this paperanalyzes and esearches the popular application tools like Privoxy,Stunnel and TOR,then，apenetrating proxy system which called PROProxy has been designed and implemented．This system uses TOR as the platform to communicate anonymously with outside，implements them utuaI conversion between HTTP and SOCKS5 proxymodules,and solve the problem of leaking address of visiting server by local DNS．)