현재의 IPv4 기반의 네트워크는 사용 가능한 주소 크기의 제약, 취약한 보안 구조 등 여러 가지 문제점을 가지고 있다. 특히 IPv4 프로토콜은 보안 요소를 생각하지 않고 설계되었기 때문에 IPv4 네트워크의 보안을 위해 SSL, IPsec 등 많은 보안 프로토콜 추가로 사용되어 지고 있다. 이러한 문제점을 해결 하기 위해서 IPv6 프로토콜에서는 128 비트의 주소 체계와 더불어 IPsec의 기반의 되는 AH와 ESP 프로토콜을 포함하고 있다. 하지만 IPv6 네트워크로 전환하기 위해서는 기존의 IPv4 네트워크와의 공존이 필요하게 된다. 이러한 이질적인 프로토콜의 공존은 IPv6 IPsec 적용시 문제점을 수반하게 된다. 본 논문에서는 IPv6 전환을 위해 연구되고 있는 여러 메커니즘에서의 IPsec 적용 가능성을 분석하여 IPsec 적용시 발생 할 수 있는 전환 메커니즘에서의 문제점을 도출하고자 한다.
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