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Network intrusion detection systems continuously monitor the network traffic in order to identify any traces of suspicious activities such as worm, viruses or spam. One attractive technique for identifying potential Internet threats is detecting previously unknown, but common sub-strings that appear very frequently in data packets. In this paper, we propose a novel architectural platform that thoroughly...
Recent network intrusion detection systems (NIDS) use regular expressions to represent suspicious or malicious character sequences in packet payloads in a more efficient way. This paper introduces a new basic building block based on Non- deterministic Finite Automata (NFA) hardware implementation to support complex constraint repetitions in regular expressions. This block is a customized counter capable...
Recent network intrusion detection systems (NIDS) use regular expressions to represent suspicious or malicious character sequences in packet payloads in a more efficient way. This paper introduces a new basic building block based on non-deterministic finite automata (NFA) hardware implementation to support complex constraint repetitions in regular expressions. This block is a customized counter capable...
This paper introduces a new basic building block based on Non-deterministic Finite Automata (NFA) hardware implementation to support complex constraint repetitions in regular expressions. This block is a customized counter capable of handling any type of constraint repetition, applicable to any sub-regular expression. We also apply optimization techniques to reduce the area and improve the overall...
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