Design of P2P Traffic Identification Based on DPI and DFI

Peer-to-peer technology has become an extremely popular Internet application technology. This technology opens enormous business opportunities to the Internet and also seriously interferes with the quality of the Internet service. The traditional single deep flow inspection or deep packet inspection detection systems have owns merits and demerits. This paper describes a new peer-to-peer traffic identification system based on the coordination technology of DPI and DFI. This new system has broader identification scope than a single DPI or DFI identification system and it has autonomous learning ability. Through the logical view and the concurrent view, this paper introduces program architecture and modules execution process of this system deeply and discusses the structural design of important data in detail, as well as the DPI/DFI coordinate modules' operating mechanism and strategy.