TY - JOUR T1 - Security Issues in VoIP Telecommunication Networks JF - Handbook on Securing Cyber-Physical Critical Infrastructure: Foundations and Challenges Y1 - 2012 A1 - Yang, Xiaohui A1 - Ram Dantu A1 - Wijesekera, Duminda KW - P2P KW - Security KW - session initiation protocol KW - small world networks KW - telecommunications KW - voice over IP AB - As VoIP telecommunication networks are becoming popular, more and more VoIP calls are being made to accomplish security critical activities, e.g., E911 services, phone banking. However, the security ramifications of using VoIP have not been fully recognized, and there exists a substantial gap in the understanding of the potential impact of VoIP exploits on the VoIP users. In this chapter, we describe the components and functionalities of non-P2P and P2P VoIP networks and discuss the potential attacks to them such as MITM, spoofing, wiretapping, pharming, etc. We also illustrate a mechanism of using small world network to improve call performance of a P2P VoIP system and evaluate it over the currently deployed OpenVoIP system. SN - 978-0-12-415815-3 UR - https://www.sciencedirect.com/science/article/pii/B9780124158153000303 ER -