Risk Analytic Approach and Cost Analysis for Interworking on the New Secured IMS Architecture
Hamid Allouch, Mostafa Belkasmi
Journal of Information Security Research, Vol. 3, No. 3, 2012.
DOI: 
Link: http://www.dline.info/jisr/fulltext/v3n3/4.pdf
Abstract:
The IP Multimedia subsystem (IMS) is the technologies of convergence and interworking environment, with services flexibility, itâ€˜s more than technical issue, it will prevail as core of Next Generation Network (NGN). The challenge and strategies of IMS architecture come from this convergence and the complexity of these technologies. In this work we present a novel design of architecture, that turns up some challenges of new IMS architecture and security system with optimal cost. The proposed architecture provides a robustness, reliability, scalability and strategy for extension in the future and responds to the security challenges. The architecture introduce clustering database HSS with automatic storage of data file that give a secure database. This paper respond to a most frank discussion about risk, investment and taking a security approach in IMS network issues, clearly we present the formula of the risk in IMS network and the comparison presented the impact of the cost signaling interworking with and without securing Gateway (SEG) with access network (AN) interworking between WiMAX and UMTS based on the new approach of secured architecture IMS. The result show the cost without Security Gateway (SEG), for signaling IMS traffic is lower than the cost with SEG, and the cost is increased by increasing arrival rate, there is a tradeoff between the level of increasing system security and the potential cost incurred .we conclude that this architecture is suitable for operators and services providers to protect against every conceivable threat, attacks , vulnerability and Denial of services.