Introduction: The improvement of the Internet has significantly helped to enhance and invent many different technologies. Further, this improvement has resulted in providing us with another choice of communication. Voice over Internet protocol (VoIP) as technology that has been developed based on the development of the Internet is a technology that allows us to make calls using the Internet protocol. This technology has notably emerged due to the fact that it only requires a simple thing to get it work which is having an Internet access. Requiring only an access to the Internet means this technology helps to save a lot of money being paid to the Internet services providers (ISP). Also, in some situations, companies need to have a private commination system trying to evolve the level of keeping the plans of their companies secured besides reducing the cost …show more content…
Furthermore, the complete VoIP’s substitution of the circuit switched PSTN is predicted from this point forward [how sip works]. However, even though VoIP is getting popular, it is notable that the more it has emerged, the more security threats it has. These security threats are somehow similar to the Internet security threats, but there are a lot of threat specialized for VoIP coming into view. It is acknowledged that VoIP uses many different protocols such as H.323, RTP, and SIP. In this paper, I will be focusing on the security issues of the Secion Internet protocols (SIP) due to the fact that it is the most popular protocol of VoIP. Targeting the voulanaibailities of SIP, I will start this paper by stating the background of VoIP and then covering most popular SIP attacks and how it is