Abstract
Software-Defined Networking (SDN) is a core technology. However, Denial of Service (DoS) has been proved a serious attack in SDN environments. A variety of Intrusion Detection and Prevention Systems (IDPS) have been proposed for the detection and mitigation of DoS threats, but they often present significant performance overhead and long mitigation time so as to be impractical. To address these issues, we propose KernelDetect, a lightweight kernel-level intrusion detection and prevention framework. KernelDetect leverages modular string searching and filtering mechanisms with SDN techniques. By considering that the Aho-Corasick and Bloom filter are exact string matching and partial matching techniques respectively, we design KernelDetect to leverage the strengths of both algorithms with SDN. Moreover, we compare KernelDetect with traditional IDPS: SNORT and BRO, using a real-world testbed. Comprehensive experimental studies demonstrate that KernelDetect is an efficient mechanism and performs better than SNORT and BRO in threat detection and mitigation.
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