본 논문은 정책 서버를 이용한 네트워크 보안 시스템에서 정책 정보 모델에 기반하여 구현한 정책 관리 도구를 소개한다. 본 논문이 기술하는 네트워크 보안 시스템은 특정 도메인을 보호하기 위해 정책을 관리하고 정책을 내리는 정책 서버와 정책 서버로부터 받은 정책들을 기반으로 침입을 탐지하고 대응하는 정책 클라이언트로 구성된다. 정책 서버와 정책 클라이언트간에 송수신되는 정책은 NSPIM(Network Security Policy Information Model)을 기반으로 구축된 정책 관리 도구를 이용하여 LDAP을 통해 디렉토리 형태로 데이터베이스에 저장된다. NSPIM은 본 네트워크 보안 시스템에서 사용하는 정책에 맞게 IETF의 PCIM과 PCIMe를 확장하여 구축한 정책 정보 모델이다. NSPIM 기반의 정책 관리 도구는 정책 생성, 수정, 삭제 등의 기능을 제공하여 정책을 관리할 뿐 아니라 재사용 객체 개념을 이용한 편집 기능, 객체 이름의 자동 생성 기능, 차단 정책의 자동 생성 기능 등을 통해 사용자에게 편리성을 제공한다.
KSP Keywords
Information model, Security Policy, network security
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