IMS路由相关问题及安全分析  

Routing in IMS and Related Security Issues

作　　者：方桂彬[1] 李洋[2] 张云飞[2] 

机构地区：[1]北京邮电大学计算机学院智能通信软件与多媒体北京市重点实验室,北京100876 [2]中国移动通信研究院,北京100053

出　　处：《中兴通讯技术》2009年第6期23-27,共5页ZTE Technology Journal

基　　金：国家重点基础研究发展规划("973"计划)课题(2007CB307101;2007CB307106)

摘　　要：IMS采用会话启动协议(SIP)作为主要信令协议,运行于IP网络之上,是下一代融合网络核心的可选方案之一。IMS中和路由相关的描述主要包括:SIP消息中与路由有关的消息头描述、用户注册路由描述、用户会话发起路由描述,用以解决注册路由和会话路由等。在IMS的部署结构和路由的过程中,接口受到的安全威胁最大,需要设备商和运营商之间根据实际情况达成共识,来提高网络的健壮性和安全性;由于普遍采用简单易实现的递归查询方式,从而导致一级服务器查询量大,需要减少查询开销。I P Multimedia Subsystem （IMS） is one of the important solutions for next generation Fixed and Mobile Convergence （FMC） networks. Based on IP network, it uses Session Initiation Protocol （SIP） as the major signaling mechanism. In IMS, such routing-related descriptions as the routing-related SIP message header, user registration routing and user session initiation routing are used for fulfill registration and session routing. In the IMS deployment structure and its routing mechanism, interfaces are most vulnerable to attacks; therefore, it is necessary for equipment vendors and operators to, based on actual situations, reach a consensus for improving network robustness and security. Another security issue is heaw query overhead of the first-level server, which is caused by the widely applied easy-to-implement recursive query.

关 键 词：IP多媒体子系统 路由 互通 安全 

分 类 号：TN919.8[电子电信—通信与信息系统]