合法侦听原型系统的设计与实现

Design and implementation of prototype system for lawful interception

合法侦听在协助执法机构打击犯罪方面起着极其重要的作用,是网络和信息安全的重要课题。针对SIP电话网络,讨论了合法侦听原型系统的设计与实现,并系统地分析了原型系统的参考模型及其模块实现,最后,给出了原型系统的运行流程。

Lawful interception （LI） plays a crucial role in assisting law enforcement agencies to combat criminal activities, therefore it is an essential part of network and information security. Based on SIP telephony network, this paper discusses the design terception and analyses the reference model and flow of the prototype system is presented. and implementation of a prototype system for lawful infunctional modules of the system. Finally, the operational flow of the prototype system is presented.