Enriched Model of Case Based Reasoning and Neutrosophic Intelligent System for DDoS Attack Defence in Software Defined Network based Cloud

Software Defined Networking in Cloud paradigm is most suitable for dynamic functionality and reduces the computation complexity. The routers switches located at network's boundaries are managed by software-defined netwrking (SDN) using open protocols specialised programmable interfaces. But security threats often degrade performance of SDN due to its constraints resource usage. sensitive components which vulnerable DDoS attacks controller control plane bandwidth. existing conventional classification algorithms lacks detection new or unknown traffic packets malicious results degradation cloud resources. Hence, this paper double filtering methodology devised detect both known pattern affects bandwidth panel controller. case-based reasoning adapted determining incoming patterns before entering system. It classifies normal abnormal based on previous information gathered. not matched from treated as indeterministic packet it defined more precisely triplet representation Neutrosophic intelligent grade belongingness, non-belongingness indeterminacyis used main factors attacking effectively. From experimental outcomes proved that attack environment improved adopting CBR-NIS compared model.