Defence scheme against application layer DDoS attacks based on credit probability
Ming Cai · Jisuanji gongcheng yu sheji · 2007
The characteristic of attack behavior is discussed and a defence scheme for application layer DDoS(App-DDoS) attack de-fending is presented based on credit probability.The scheme emploied statistical analysis of data from normal users to find the probability distributions of data of normal behavior,utilizing rate and workload of request data.The probability distributions are the evidence for setting credit probability of sessions.The scheduling policies realized the defence of attacks based on credit probability of sessions.Also,the feasibility of the scheme is validated through the simulated test.The experimental results show the effectiveness of the scheme in de-fending the App-DDoS attacks.