International Journal of Computer Applications
Security and privacy become mandatory requirements for voice and video communications that needs security services such as confidentiality, integrity, authentication, non-replay and non repudiation. Stringent Quality of Service (QOS) maintenance for voice & video communication is a major challenge. New security solutions must take into account the real-time constraint of voice & video and their mechanisms should address possible attacks and overhead associated with it. Nowadays, Virtual Private Networks (VPNs) is considered the strongest security solutions for multimedia communications over IP networks. In this paper, analysis and experimental results for an evaluation of the QOS of voice and video traffic are presented.