Mobiles Agents and Virtual Firewall to Secure the Shared Network for Virtual Machines in IaaS cloud

Cloud computing is a new paradigm based on distributed services. It allows to reduce costs and simplify the management of resources. Positioning the cloud in an operational environment provides easy and quick access to computing resources anywhere, anytime, with any device. However, it is deployed in virtual resources to provide services to public customers and private organizations. In fact, without security measures, distributed cloud services are vulnerable. It acquires knowledge about vulnerabilities, attacks, activities of attackers and tools to secure it. In this paper, we will propose a framework for detecting and repairing distributed intrusions in private cloud. However, we focus on the security of virtual network in virtualized environment. In order to secure inside or outside communication of virtual machines, we suggest using our framework based on snort, mobile agents and virtual firewall. This framework allows to reach three objectives: the first, detection intrusion in a virtual environment using mobile agents for collecting malicious data. The second, generating new signatures from malicious data, which were collected in the first phase. Finally, dynamic deployment of remote response actions using virtual firewall. By this type of close-loop control, the collaborative network security management framework can identify and address new distributed attacks more quickly and effectively.