Efficient light model for securing IMS network

The security in IMS network is a big challenge for both users and service providers over IMS. Many research works are interested in this field to build more secure networks and to deal with security problems. This paper aims to present firstly a synthesis of the most important existing model used to secure IMS network. Secondly, the paper introduces our approach to address security in IMS. This approach defines light model for IMS network, identifies and focuses in the most vulnerable components of IMS network. It gives more importance to secure these components in order to build a safety network.