基于DPI技术的IM协议识别系统研究

针对不法分子利用IM协议通信软件泄露国家和企业机密以及传播反动言论的问题，文中在深入研究和分析多种即时通信软件的IM协议的基础上，总结以往IM协议识别系统的缺陷，配合DPI技术的应用设计了一个全新的IM协议检测系统，即基于DPI技术的IM协议识别系统，该系统能够有效地对多种即时通信软件进行识别和监控。通过实验对多种即时通信软件如QQ，fetion，MSN，新浪微博桌面版，googletalk，yahoomsg等的文本信息进行实时监控，验证了该系统对IM协议识别具备极高的识别率以及优越的稳定性。

Research on IM Protocol Recognition System Based on DPI Technology

Aiming at lawbreakers take advantage of the IM protocol communication software to divulge state and corporate secrets,as well as dissemination of reactionary remarks,in order to solve this problem, on the basis of studying and analyzing in-depth the IM protocol of a variety of instant messaging software, summarizing the previous IM protocol identification system＇ s defects, combined with the applica- tion of DPI technology a novel IM protocol detection system is designed,which is the IM protocol recognition system based on DPI tech- nology. This system is capable of effective identification and monitoring of a variety of real-time communication software. Through the real-time monitoring experiments on a variety of instant messaging software such as QQ,fetion,MSN,the Sina microblogging desktop edition, googletalk, yahoomsg etc, verify the system with superior recognition rate and perfect stability.