Abstract:

With the development of Internet technology and the surge for the number of real-time communications applications, to effectively manage network traffic has been faced with new challenges.The article first outlines protocols associated with VoIP network traffic.Then on the basis of analyzing the methods for traditional traffic identification, it proposes an recognition mechanism based on transport layer for UDP traffic or encrypted traffic.And the article applies the naive Bayesian classifier algorithm to identification of VoIP traffic. Finally, it gives a deployment to verify several VoIP applications. Experimental results show that naive Bayesian algorithm is applied effectively to classification for VoIP traffic. At the end of the article,it describes that the algorithm still needs to be improvemented because of properties independence.

Key words: VoIP, transport layer, naive Bayesian, classification for VoIP traffic, independence