SIP Security Mechanism Techniques on Voice Over Internet Protocol (VoIP) System

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Executive Summary

SIP-based VoIP system has many security problems because of the security mechanism of VoIP system and other external factors. These effects relate to the following three aspects: confidentiality, integrity and availability. The sip security mechanism technique on VoIP system and the components of SIP have been analyzed in this paper. The attacks on the SIP system, such as the registration hijacking, impersonating a proxy, denial of service and spam are discussed in detail. This paper has also pointed out the insufficiency of the SIP security mechanism, including different types of attacks.

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