Host Based Intrusion Detection to Prevent Virtual Network System from Intruders in Cloud

In Cloud System, virtual machine is considered as the security threat. This is because all cloud users install their applications in virtual machines. Particularly, intruders can exploit vulnerability to a cloud system and compromise virtual machines to deploy further large scale types of attack like distributed denial of service (DDOS). Mainly vulnerability arises in infrastructure as a service (laas) cloud where the infrastructure shared by millions of users. To prevent vulnerable virtual machine from being compromised in the cloud, the proposed framework introducing multiphase distributed vulnerability detection measurement and countermeasure selection mechanism. It built an attack graph analytical model which is used for identify the intruders possible way of exploit vulnerability. The model consist information about virtual topology and also about cloud servers. Based on the information provided by the analytical model then the system deploy an appropriate counter measures.