基于SIP的SPIT防御方案的設(shè)計與實(shí)現(xiàn)
[Abstract]:Absrtact: with the introduction of IP multimedia subsystem (IP Multimedia Subsystem, IMS), the report predicts that the number of (Voice over Internet Protocol, VoIP) users will increase. Accordingly, in the next few years, (Spam over Internet Telephony, SPIT) will become a very serious problem. SPIT, refers to a large number of unsolicited calls over the VoIP network. By playing real-time media information to be called to sell goods, commercial advertising or malicious calls, the normal user life caused serious problems, serious waste of network resources. Make it impossible for public service departments to provide timely and effective services to the public. The main work of this thesis is as follows: firstly, the anti-spam telephone technology proposed by IETF (Internet Engineering Task Force) and other organizations is analyzed. It is not difficult to find that although a large number of SPIT defense methods have been proposed, the related research is still in an initial stage. Then, this paper designs a more effective SPIT defense scheme, which is based on the session initiation protocol (Session Initiation Protocol, SIP), because the SIP solution dominates the current enterprise market. The scheme consists of three key mechanisms, which can detect both machine initiated SPIT, and filter manual initiated SPIT,. The first mechanism is based on the Turing test principle and uses a discriminant system to solve the "first call" problem in the field of SPIT research. The second mechanism is to design a SPIT classifier using probabilistic neural network (Probabilistic Neural Network, PNN),). The third mechanism in this paper, called Honey Machine (Honeyphone), is inspired by honeypot (Honeypot). Finally, three mechanisms are implemented, and the results of test and analysis show that the overall scheme has good performance in completeness, real-time and usability. At the same time, the advantages and disadvantages of the existing technical scheme are summarized. In general, the proposed scheme is effective. These three mechanisms can achieve independent functions and can also be deployed in different locations. This paper proposes to combine the three mechanisms and combine the information to make the decision more accurate.
【學(xué)位授予單位】:北京交通大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2011
【分類號】:TN916.2
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