METHOD, SYSTEM AND COMPUTER-READABLE RECORDING MEDIUM FOR PROVIDING COMMUNICATION NETWORK ENVIRONMENTS ROBUST AGAINST DENIAL OF SERVICE ATTACK

摘要

PURPOSE: A method for providing communication network environment, which is strong against a DDoS DDoS(Distributed Denial of Service) attack, is provided to manage the DDoS by providing maximum service to a normal user. CONSTITUTION: An attach detection unit(220) monitors a status of communication network. According to a monitoring result, the attach detection unit recognizes the status as one between normal state and abnormal state. If the communication state is abnormal state, a cache server(240) processes normal traffic without service limit in a caching engine by referring a database. The cache server processes doubtful traffic in a second engine having service limit.