Defense of DDoS attack for cloud computing

Though cloud computing is targeted to provide better utilization of resources using virtualization techniques and to take up much of the work load from the client, it is fraught with security risks. One of most serious threats is Distributed Denial of service attack (DDoS) which is easy to implement and affective. In this paper, we proposed an approach called SBTA which based on the use of SOA to traceback and find the source of DDoS attacks. We further propose a filter approach called Cloud-filter. Experiments show the defense system which is a combination of SBTA and Cloud-filter is effective in Cloud Computing. It was able to trace and identify the source most of these attacks messages of these attacks and reduce the packets that reconstruction path required. It also had a high detection rates with low false positives.