Threat to security in mobile IaaS based cloud environment prohibits the usage of services specially, in case of public cloud environment. In this paper, we propose the Intrusion Detection System based defense to secure the mobile cloud infrastructure. The IDS protects our cloud infrastructure from the outside cloud based attacks as well as the attacks originating from the virtual machines. We analyze the proposed architecture using a prototype on OpenNebula platform and compare it with traditional computational infrastructure. Results on OpenNebula show that our proposed defense technique increases the efficiency besides providing security and mobility.
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