Research On Detection And Defense Of NTP Amplified Reflection Attack Based On Wavelet Analysis

With the wide application of the Internet in the social development,and a boom of information technology,there are a lot of information security incidents in the society.In recent years,there have been a number of NTP amplification attacks on the network,and this kind of attack is increasingly frequent.In the face of various network attacks occurs frequently in the society,methods and products of network security analysis and network maintenance personnel need to find a better and more excellent,to identify and solve network security protection,network attacks in a better way,to maintain the good environment of the internet.In this dissertation the frequent occurrence of amplified NTP reflection attacks as the research object,the amplification principle of reflection attacks through the analysis of the NTP,looking for a more scientific and effective reflection NTP amplification attack detection technology,and establish the model of defense,for this has important theoretical significance to solve the problem of network security.The validity of this proposed model is set up in laboratories to validate this method by simulating NTP amplified reflection attack experiments,experimental results show that the proposed wavelet analysis of NTP amplified reflection based attack detection method is effective and reliable,and the experiments also demonstrate that the proposed NTP amplification attack defense measures can be clearly reflected from normal traffic and attack traffic,and based on the available bandwidth to ensure the normal data flow under the better to complete the defense task.