International Association of Engineers
Next Generation Networks (NGN) focuses to improve the telecommunication core and access networks and plan to transport all the services by encapsulating them into packets via a single IP based network. IP Multimedia Subsystem (IMS) serves as a Service Delivery Platform for NGN. Conference, one of the main services provided by the IMS, allows the multiple users to communicate at a time. This service is subject to various types of flooding attacks (i.e. invite flooding attack, register flooding attacks etc), internal threats (i.e. SQL injection) and session based attacks (session teardown attack, session modification attack etc).