Vulnerabilities and Security Limitations of Current IP Telephony Systems

Abstract

Within the traditional telephone system a certain level of quality and security has been established over the years. If we try to use IP Telephony systems as a core part of our future communication infrastructure (e.g. as classical PBX enhancement or replacement) continuous high availability, stable and error-free operation and the protection of the privacy of the spoken word are challenges, that definitely have to be met. Since manufacturers start deploying new end systems and infrastructure components rather fast now -a critical inspection of their security features and vulnerabilities is mandatory. The critical presentation of the theoretical background of certain vulnerabilities, testing and attacking tools and the evaluation results reveals, that well-known security flaws become part of implementations in the new application area again and the security level of a number of examined solutions is rather insufficient.

Cloud CRM: State-of-the-Art and Security Challenges

“…Thus, the internet security system expected to assure that data received exactly at the right manner. Irrespective of the original cause of losing data integrity, this loss will definitely be a terrible for internet security system [30]. Last, authenticity is directly related to the techniques of security system which performs to establish data transfer when started and where end, thus trying to assure the data received was really originated where it says it is coming from and sent by the one mentioned on its label [31].…”

“…First, deploy physical security mechanism to minimize the hazard. The second type is the intangible protection security dealing with the system defense to enhance the capability of enterprise security, allowing conducting a successful business over network [30]. It's important to remember that awareness and responsibility of the underlying cloud CRM refer to the creating trust among enterprises rather the internet threats itself.…”

A Comprehensive Survey of Voice over IP Security Research

“…Ackermann et al [132] describe threats in VoIP, focusing on specific attacks and vulnerabilities as case studies. Hunter [133], Batchvarov [134], Bradbury [135], and Chau [136] provide summaries of specific security concerns in VoIP.…”

Security Engineering with Patterns

“…In the following, we introduce major building blocks based on the notion of a knowledge feedback loop [3,203]. In the following, we introduce major building blocks based on the notion of a knowledge feedback loop [3,203].…”

“…The first example presents results of an examination of IP telephony systems conducted in 2001 [3]. The first example presents results of an examination of IP telephony systems conducted in 2001 [3].…”