LB-VoIP: Enhancing access control of VoIP for secure networks

Voice over IP (VoIP) has attracted the attention of secure networks for its convenient deployment, easy management and multi-service carrying capability. However, security is a big problem that must be considered if VoIP is introduced into secure networks. Traditional methods to deal with security problems in VoIP are usually adopting encryption algorithms, enhancing authentication mechanisms, introducing intrusion detection systems or firewalls and so on. But for secure networks, due to its different security requirements to the public networks, such as high controllability, aforementioned methods are inappropriate and not full-qualified. In this paper, we propose a label-based VoIP (LB-VoIP) to solve this problem by enhancing access control to voice service, terminals and voice data. Several experiments are also presented to prove the practicability of LB-VoIP.