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Due to the growth of network environment complexity, the necessity of packet payload inspection at application layer is increased. String matching, which is critical to network intrusions detection systems, inspects packet payloads and detects malicious network attacks using a set of rules. Because string matching is a computationally intensive task, hardware based string matching is required. In this paper, the authors propose a hardware-efficient string matching architecture using the brute-force algorithm. A process element that organizes the proposed architecture is optimized by reducing the number of the comparators.
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