본 논문에서는 수 Gbps 네트워크 트래픽에서 실시간 침입 탐지를 위한 패턴 매칭 방법인 MDPI를 제안한다. MDPI는 패킷 전달 순서가 유지되지 않는 경우 버퍼링, 재배열 및 재조립에서 발생하는 오버헤드 문제를 해결하기 위해 독립 부분 매칭에 의한 행렬 기반의 패턴 매칭 방법이다. MDPI는 SNORT 룰셋(Rule Set)의 평균 길이인 17바이트의 경우 w=4 바이트에서는 61%, w=8 바이트인 경우는 50%의 TCAM 메모리 효율이 증가 되었다. 또한 MDPI는 10.941Gbps 패턴 검사 속도와 5.79 LC/Char 하드웨어 자원을 소모함으로써 하드웨어 복잡성 대비 성능 측면에서 최적화된 결과를 얻었다. 따라서 본 논문에서는 하드웨어 비용 절감에 의해 가격 효율적인 고성능 침입 탐지 기술을 제안한다.
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Rule set
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