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Pattern matching method has been used in this paper, and intrusion detection method based on protocol acknowledgement is proposed. We analyze how to determine the time interval value of ΔT and the threshold value of N, and the existence of direct proportion relationship between ΔT and N is proved. The protocol acknowledgement module includes packet filtering and state protocol analysis techniques...
The effect of clustering by Self Organizing Map (SOM) is always effective in intrusion detection (IDS). But there are still some limitations in the algorithm of SOM, such as the algorithm is easy to get into the local minimum, detection accuracy is low, the convergence speed is slow and so on. In this paper, to improve the accuracy and convergence rate, we use Simulated Annealing (SA) algorithm to...
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