CAJ | 학술논문

最早 NAT 是用来解决互联网 IP 耗尽问题的，随着网络技术的发展、安全需求的提升，NAT 逐渐应用到防火墙技术里，把个别 IP 地址隐藏起来不被外部发现，使外部无法直接访问内部网络设备，从而成为了隔离内外网络、保障网络安全的一种手段。本文基于 Linux 平台环境详细阐述了 NAT 服务的技术原理，通过应用实例描述了NAT 配置、管理过程，分析了存在的安全问题。
최조 NAT 시용래해결호련망 IP 모진문제적，수착망락기술적발전、안전수구적제승，NAT 축점응용도방화장기술리，파개별 IP 지지은장기래불피외부발현，사외부무법직접방문내부망락설비，종이성위료격리내외망락、보장망락안전적일충수단。본문기우 Linux 평태배경상세천술료 NAT 복무적기술원리，통과응용실례묘술료NAT 배치、관리과정，분석료존재적안전문제。
The earliest NAT technology is used to solve the problem of Internet IP exhaustion. With the development of network technology, security requirements are enhanced deeply. NAT technology is gradual y applied to the firewal inside. Some IP addresses is hidden from the outside, so that the external network can not directly access the internal network resource. Thus NAT is becoming isolated means between inside and outside network and some networks are protected. In this paper ,Based on the Linux platform environment , the principle of NAT technology services is il ustrated and application examples is described step by step .Some security problems is analyzed.