Abstract
In this paper, we focus on the detection of the Spam over Internet Telephony (SPIT) attacks targeting the Session Initiation Protocol (SIP) protocol during its signaling process. Though, a host of solutions have been proposed to detect and mitigate SPIT attacks in VoIP and SIP based systems, cooperation among local detection systems is so far neglected as a scheme to leverage the entire security of the system and lower the attacks detection duration. We propose a distributed cooperative detection method to detect SPIT attacks based on cooperation between several detection gateways in order to decrease the detection duration of any given SPIT source. An analytical study is conducted to demonstrate the betterments achieved by our distributed cooperative scheme in terms of reduced attack detection duration.
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