Identifying the use of data/voice/video-based P2P traffic by DNS-query behavior

  • Authors:
  • Hung-Shen Wu;Nen-Fu Huang;Guan-Hao Lin

  • Affiliations:
  • Institute of Communications Engineering, National Tsing Hua University, Taiwan;Institute of Communications Engineering, National Tsing Hua University, Taiwan and Department of Computer Science, National Tsing Hua University, Taiwan;Department of Computer Science, National Tsing Hua University, Taiwan

  • Venue:
  • ICC'09 Proceedings of the 2009 IEEE international conference on Communications
  • Year:
  • 2009

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Abstract

There are more and more P2P applications in the Internet, with or without encrypted content. The P2P applications can be classified into three categories: file sharing (BT, eMule), VoIP (Skype, MSN), and Video streaming (PPStream, PPLive). By observing the common communication nature among the peers, this paper proposes a simple but efficient way to identify the P2P traffic by the DNS query behavior. Experimental results illustrate that the proposed mechanism is able to accurately identify if a host is using data/voice/video-based P2P traffic, even the packet content is encrypted. The proposed mechanism is also capable of detecting future unknown P2P applications as long as they perform the common P2P behaviors.