Research of Three-Level Detection Algorithm against Low-rate Denial of Service Attacks

摘要

Three-level detection algorithm is provided to detect low-rate denial of service attacks. The networks abnormities are caught in the first level;;In the second level the flooding and low-rate denial of service(DoS) are divided;;And then the low-rate DoS is detected accurately using frequency transfer method in the third level. Considering the application of networks, low-rate DoS attacks are detected and confirmed in three-level detection algorithm. Comparing with single level detection method, the most complex procedure is left behind to reduce detecting overhead. The simulation results certificate the feasibility of the algorithm.