Résumé:
Cloud computing is a new model of computing which provides
scalability, flexibility and on-demand service. Virtualization is one of the main
components of the cloud, but unfortunately this technology suffers from many
security vulnerabilities. The main purpose of this paper is to present a new secure architecture of Virtual Network machines in order to increase security
among virtual machines in a virtualized environment (Xen as a case study).
First, we expose the different network modes based on Xen Hypervisor, and
then we analyses vulnerabilities and security issues within these kind of environment. Finally, we present in details new secure architecture and demonstrate
how it can face the main security network attacks.
