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Regular expression (RE) matching is a core component of deep packet inspection in modern networking and security devices. In this paper, we propose the first hardware-based RE matching approach that uses ternary content addressable memory (TCAM), which is available as off-the-shelf chips and has been widely deployed in modern networking devices for tasks such as packet classification. We propose three...
Regular expression (RegEx) matching is a core function of deep packet inspection in modern network devices. Previous TCAM-based RegEx matching algorithms a priori assume that a deterministic finite automaton (DFA) can be built for a given set of RegEx patterns. However, practical RegEx patterns contain complex terms like wildcard closure and repeat character, and it may be impossible to build a DFA...
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