Abstract:
At present, Denial of Service (DoS) has widely problem in computer networks and the
Internet. It also affects to private companies or government organizations, which is increasing
effect in the future. From the previous mentioned problem, we have studied about a structure of
DoS attacking and methods of router operation. We have found that the Netflow log, which is
recovered from routers, is useful to apply for detecting, preventing and alarming the intrusion
attacking, especially DoS. Finally, we have, however, developed a program, which is consisted of
alarming operation, the intrusion detection and prevention algorithms. The simulation results have
shown that our proposed work can detect, prevent and send an alarming message to the network
administration correctly.