【作者】 朱晓波； 辛阳； 黄玮； 钮心忻； 杨义先；

【Author】 ZHU Xiao-bo~(1,2) XIN Yang~(1,2) HUANG Wei~(1,2) NIU Xin-xin~(1,2) YANG Yi-xian~(1,2) (1.Key Laboratory of network and information attack & defense technology of MOE,Beijing University of Posts and Telecommunications,Beijing 100876,China;2.National Engineering Laboratory for Disaster Backup and Recovery,Beijing University of Posts and Telecommunications,Beijing 100876,China)

【机构】 北京邮电大学网络与信息攻防技术教育部重点实验室； 北京邮电大学灾备技术国家工程实验室；

【摘要】 本文设计和实现了基于H.323和SIP的VoIP流量监控系统。传统的流量监控工具无法实时地将VoIP信令流和媒体联关联起来。本文所设计的VoIP流量监控系统既能够进行VoIP流量识别,也能够实时的把VoIP信令流和媒体流关联起来。本文介绍了VoIP协议及VoIP流量监控系统的部署场景。并对VoIP流量监控系统流程中的包捕获、VoIP协议识别、VoIP协议处理等技术进行具体分析。通过实验和分析,本系统能够检测每秒新增400路VoIP话路。更多还原

【Abstract】 In this paper,we design and implement a VoIP network traffic monitoring system based on H.323 and SIP VoIP calls. Traditional network traffic monitoring tools can’ t real-time associate the VoIP signal flows and the media flows.The system in this paper can either monitor the VoIP calls,and also can associate the VoIP signal flows and the media flows.In this paper,we introduce the VoIP protocols and the scenario the system would apply in.After introducing the process flow of VoIP network traffic monitoring,we analyze how to capture the voice packets,the method to identify the VoIP protocols and the way to process the VoIP protocols.In this paper,we focus on to introduce the way to identify H.323,SIP and RTP VoIP protocols,and analyze the way to process them.In this paper,through the experiment and analysis,the system can monitor 400 new VoIP calls per second.更多还原