Securing VoIP network: An overview of applied approaches and analysis

VoIP is becoming more and more popular and as such a potential target for hackers. Providing security for VoIP services is therefore pertinent for telecommunications. Without correct mechanisms to ensure callers´ authentication, transmission confidentiality and availability of the service, security of the VoIP users is at risk. The fact that VoIP relies on IP infrastructure make it vulnerable to any attack that targets the network. Consequently, whatever may be the nature of the attack, there is a good chance that the attacker is capitalizing on a weakness in the VoIP protocol being used. VoIP is different from other IP services in the sense that its security is normally treated as one of the service properties configurable by the user. This article provides an overview of the VoIP security configuration requirement, aimed at empowering public VoIP user With the strategies to mitigate threats.