Detection and Protection against Distributed Denial of Service Attacks in Accountable Grid Computing Systems

By exploiting existing vulnerabilities, malicious parties can take advantage of resources made available by grid systems to attack mission-critical websites or the grid itself. In this paper, we present two approaches for protecting against attacks targeting sites outside or inside the grid. Our approach is based on special-purpose software agents that collect provenance and resource usage data in order to perform detection and protection. We show the effectiveness and the efficiency of our approach by conducting various experiments on an emulated grid test-bed.