Journal of Computer Applications

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Bidirectional monitoring threat and simulation in IP Multimedia Subsystem

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  • Received:2007-12-10 Revised:1900-01-01 Online:2008-06-01 Published:2008-06-01
  • Contact: Xiao-lei WANG

IMS中的一种双向监听威胁及仿真

王晓雷 郭云飞 杨涛   

  1. 国家数字交换系统工程技术研究中心 国家数字交换系统工程技术研究中心 国家数字交换系统工程技术研究中心
  • 通讯作者: 王晓雷

Abstract: Started with the IP Multimedia Subsystem (IMS) security mechanism, the flow of register and authentication in IMS were introduced; then combined with the ordinary threat in SIP protocol, the possibility of attack using the leak of SIP in IMS was analyzed. Based on this, adopting the theory of registration hijacking and server impersonating, a new threat named bidirectional monitoring was proposed. Function of CSCF in IMS was realized using Open SER. A network simulation environment was built to simulate the possibility of bidirectional monitoring. The result of the simulation proves that the threat of bidirectional monitoring is existent.

Key words: IP Multimedia Subsystem (IMS), registration hijacking, server impersonating, bidirectional monitoring, simulation

摘要: 从IP多媒体子系统(IMS)的安全机制入手,对IMS的注册认证流程做了详细分析,然后结合SIP协议的常见威胁,分析了在IMS中应用SIP漏洞实施攻击的可行性。以此为基础,利用注册劫持和服务器伪装的思想,提出了IMS中的一种双向监听威胁。利用Open SER实现IMS网络中CSCF的功能,搭建IMS网络仿真环境,在仿真环境中对双向监听进行仿真。仿真结果表明,双向监听威胁在IMS中是确实存在的。

关键词: IP多媒体子系统, 注册劫持, 服务器伪装, 双向监听, 仿真