P2P-AVS: P2P Based Cooperative VoIP Spam Filtering

With the broad implementation of Internet, VoIP poses an important role on the Internet and provides a new way to people to contact each other. As VoIP´s cheapness and simpleness, many institutes forecast that VoIP emerges as next spam entryway like e-mail service. In this paper, we propose a novel schema, called P2P-AVS (anti-voice-spam), against spam call on the VoIP networks. It bases on an open distributed architecture to store and share end users´ personal evaluation about spammer. P2P-AVS system acts as a middleware of VoIP proxy server, and constructs a DHT network over them to make it more robust. Furthermore, we design a proper reputation model to measure user´s histoy and combine others´ evaluation so that we can detect spam calls. At last, we verify the reputation model through building simulation testbed. Results show that reputation model of P2P-AVS could detect spam calls accurately.