Abstract
The low-level(binary) detector that the traditional artificial-immunity-based network intrusion detection systems adopt prevents the extraction of meaningful domain knowledge,and leads to incomplete cover of Nonself space.In this paper,the method of constructing binary self set and generating valid detector were improved.Real-valued negative selection algorithm was studied and the real-valued detectors were added to construct the hybrid detector congregation to detect abnormal behavior of both packets and sessions at detection stage.The ROC curves of experimental results show that it has higher detection rate and lower false alarm rate.
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