基于非参数估计的应用层网络流协议识别

On the basis of the research of non-parametric estimation Parzen Window method and analysis for the various protocols flow in network application layer, the paper designs a classifier of network application layer protocols which uses the network flow protocol feature as basic elements of statistical value.After having determined the optimal feature the network protocols classification model is constructed and improved by using the natural data,and the classification result can be got. The rmethod is compared with the parametric estimation rmethod. The experiments results show the Non-parametric identification method based on Parzen Window estimation is better than that of parameter estimation .