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首页> 外文期刊>International journal of mobile computing and multimedia communications >A Secure Architecture for Nomadic User in IMS Network
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A Secure Architecture for Nomadic User in IMS Network

机译：IMS网络中游牧用户的安全架构

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摘要

The IP multimedia subsystem (IMS) is a basis for a significant new architecture which offers network operators the opportunity to expand their services, by integrating voice and multimedia communications and delivering them into new environments with new purposes. Basically, the IMS is an overlay network on top of IP layer that uses Session Initiation Protocol (SIP) as the primary signaling mechanism. SIP works at the application layer in IP networks. It is thus faced to not only the IP-networks security issues, but also to new issues which are related to the SIP protocol directly. Consequently, using IMS bears several new security challenges. This paper presents the most relevant SIP-related security vulnerabilities and threats, and the implementation and simulation test bed to experiment two versions of the SIP Asterisk software to emphasize these threats. The different security mechanisms that can be deployed to overcome the SIP security issues while putting emphasis the most important ones are discussed. Afterwards, the authors propose adaptable solutions to the SIP threats already identified for a specific service (access information from anywhere) in IMS context. Finally, conclusions are drawn and some perspectives are introduced to improve the security of multimedia applications.
机译：IP多媒体子系统（IMS）是重要的新架构的基础，该架构通过集成语音和多媒体通信并将其交付到具有新用途的新环境中，为网络运营商提供了扩展其服务的机会。基本上，IMS是IP层之上的覆盖网络，它使用会话发起协议（SIP）作为主要信令机制。 SIP在IP网络的应用层工作。因此，不仅面临IP网络的安全问题，而且还面临与SIP协议直接相关的新问题。因此，使用IMS带来了一些新的安全挑战。本文介绍了与SIP相关的最相关的安全漏洞和威胁，并提供了实现和模拟测试平台，以对两种版本的SIP Asterisk软件进行实验以强调这些威胁。讨论了可以用来克服SIP安全问题同时强调最重要的安全机制的各种安全机制。之后，作者针对IMS上下文中已针对特定服务（来自任何地方的访问信息）确定的SIP威胁提出了适用的解决方案。最后，得出结论并介绍一些观点，以提高多媒体应用程序的安全性。

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