SIP应用的安全性研究

介绍了SIP的体系结构后，重点分析了SIP协议的安全模型，及针对典型攻击解决方案，介绍了在3G无线网络、NGN等典型应用场景中SIP的安全解决方案。通过对不同安全方案的对比，结果显示SIP应用在不同的场景下，需要采取不同的安全框架模型及具体实现策略。

Security Mechanism Study on SIP Application

Session Initiation Protocol (SIP) is the most important and popular protocol in multimedia communication. but SIP design model also bring some potential security issues. This paper firstly gives a brief introduction of SIP architecture, then analysis its security model and solution for the typical attack, at last, give an introduction of security solutions in 3G wireless network and NGN application scenarios. From the comparison between the different security solutions, the result shows that different security model and implementation strategy should be chosen in different scenarios.