An integrated model of intrusion detection based on neural network and expert system

Intrusion detection technology is an effective approach to dealing with the problems of network security. In this paper, it presents an intrusion detection model based on neural network and expert system. The key idea is to aim at taking advantage of classification abilities of neural network for unknown attacks and the expert-based system for the known attacks. We employ data from the third international knowledge discovery and data mining tools competition (KDDcup´99) to train and test the feasibility of our proposed neural network component. According to the results of our experiment, our model achieves 96.6 percent detection rate for DOS and probing intrusions, and less than 0.04 percent false alarm rate. Expert system can detect R2L and U2R intrusions more accurately than neural network. Therefore, hybrid model improves the performance to detect intrusions