A Secure Cross-Domain SIP Solution for Mobile Ad Hoc Network Using Dynamic Clustering

With the increasingly popularity of mobile devices (e.g. iPhones and iPads), Mobile Ad hoc Networks (MANETs) have emerged as a topical research area in recent years, and adapting and implementing voice protocols over MANETs is a popular area of inquiry. Successful implementation of voice over MANETs would present a more efficient and cheaper way of communication. In this paper, we propose a cross-domain Session Initiation Protocol (SIP), a widely used voice over Internet Protocol (VoIP) protocol, solution for MANETs using dynamic clustering by extending the scheme of Aburumman and Choo. Our enhanced solution allows us to scale across domains, and deal with outbound requests using the reputation method. Advantages of this solution include avoiding the shortcomings associated with centralized approaches, such as a single point of failure. To demonstrate the utility of the solution, we simulate and evaluate the proposed solution under different conditions and using metrics such as trust level, overhead, network delay, success ratio, and network management packet.