分析了已有流量识别方面的主要方法,针对基于SIP的VoIP流量,提出一种结合协议特征和协议流程分析的综合流量识别方法,并基于Libpcap库实现了对应的识别工具。
This paper analyzed the mostly-used traffic identification methodologies, and proposed an approach based on both protocol signatures and payload-based analysis to identify SIP-based VoIP traffic. A tool is also implemented on Linux with Libpcap library.