본 논문에서는 커널수준의 침입탐지를 위한 동적 침입탐지 규칙 변경 기법을 제안한다. 제안하는 기법은 침입탐지 규칙은 규칙타입 프로토콜 타입, 패킷 헤더와 패킷 페이로드에 대한 검사를 수행하기 위한 규칙들로 세분화하여 LVR로 표현하고 이들 LVR이 계층적으로 구성된 IDRL로 관리한다. 침입탐지는 IDRL을 이용하여 수행하며, 규칙에 대한 변경은 변경된 규칙에 대한 LVR을 구성하고 LV를 이용한 포인터 변경을 이용하여 IDRL에 반영하는 방법이다. 제안하는 기법은 IDRL을 이용한 침입탐지와 탐지규칙의 변경을 IDRL에 최소한의 비용으로 수행하고, LVR을 이용하여 침입탐지 규칙을 디스크와 메모리에 동일한 형태로 저장 및 관리하여 탐지규칙 초기화 비용과 변경 비용을 최소화할 수 있다. 이를 통하여 보다 안전한 커널 수준에서의 네트워크 보안을 위한 효율적인 동적 침입탐지 규칙 변경을 지원할 수 있다는 장점을 가진다.
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