현재 네트워크는 유 무선이 통합되는 차세대 네트워크(NGN), 유비쿼터스 시대로 발전하고 있다. 현대인의 네트워크에 대한 의존도가 커질수록, 네트워크 취약점을 악용한 사이버상의 위협과 새로운 공격 유형이 급증하고 있다. 보다 안전하고 신뢰할 수 있는 네트워크 환경을 위해 다양한 보안 제품들이 등장하고 서로의 기능들을 통합하여 더 나은 보안 서비스를 제공하고자 노력하고 있으나, 기존의 대표적인 보안 제품들로는 그 한계가 있다. 따라서 네트워크 자체가 취약점과 공격을 받더라도 지속적으로 서비스를 제공할 수 있고, 빠른 보안 업데이트를 통해 네트워크 자체의 붕괴를 미연에 예방 가능한 새로운 네트워크 보안 구조가 요구된다. 본 논문에서는 차세대 네트워크 발전 방향에 적합한 네트워크 보안 구조를 제안하고, 제안하는 구조에서 네트워크 보안 시나리오를 제시하여 검증한다.
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