Chapter 50 – VoIP Security

The Internet has become an important medium for communication, and all kinds of media communications are carried on today’s Internet. Telephony over the Internet has received a lot of attention in the last few years because it offers users advantages such as long distance toll bypass, interactive ecommerce, global online customer support, and much more. Due to the increased attention in Voice over IP (VoIP), security in such networks has gained higher precedence. In this chapter, we review a broad array of attack vectors in VoIP and its corresponding security solutions.