VoIP security - attacks and solutions

Phithakkitnukoon, Santi; Dantu, Ram and Baatarjava, Enkh-Amgalan (2008). VoIP security - attacks and solutions. Information Security Journal: A Global Perspective, 17(3) pp. 114–123.

DOI: https://doi.org/10.1080/19393550802308618

URL: http://www.tandfonline.com/doi/abs/10.1080/1939355...

Abstract

Voice over IP (VoIP) technology is being extensively and rapidly deployed. Flexibility and cost efficiency are the key factors luring enterprises to transition to VoIP. Some security problems may surface with the widespread deployment of VoIP. This article presents an overview of VoIP systems and its security issues. First, we briefly describe basic VoIP architecture and its fundamental differences compared to PSTN. Next, basic VoIP protocols used for signaling and media transport, as well as defense mechanisms are described. Finally, current and potential VoIP attacks along with the approaches that have been adopted to counter the attacks are discussed.

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