Cloud security is security principles applied to protect data, applications and infrastructure associated within the cloud computing technology. In this paper a new Multiphase Distributed Network Intrusion Detection system (MDIDS) and prevention framework in a virtual network environment is proposed. It captures and inspects suspicious cloud traffic without interrupting user's applications and cloud services. The Distributed Denial Of Service (DDOS) attacks caused by the vast flow of requests from various clients to the cloud server at the same time. This DDOS attack is high in Network Intrusion Detection and Counter Measure Selection in Virtual Network Systems (NICE). This is very much reduced in MDIDS and also leads to less CPU Utilization, less virtual machine creation time and less Infrastructure Response Time (IRT).
Cloud computing, cloud security, DDOS, intrusion detection, deep packet inspection
