Research of SIP DoS defense mechanism based on queue theory

Abstract

The SIP is becoming the core of multimedia communication network through the IP, based on which the 3G network has been operated in our country. The easy implementation, high destruction and hard tracking against attacking source which are the characters of DoS attack cause the great security threat to SIP. Focusing on the research on defense mechanisms of DoS attacks in SIP protocol, this paper proposes a model based on queue theory to approximately analyze the DoS attack, and then presents a DoS attack defense method. Simulation was taken to analyze the performance of the defense mechanism. © 2011 Springer-Verlag Berlin Heidelberg.