January 2023
Intermediate to advanced
424 pages
11h 16m
Japanese
Content preview from AWSではじめるインフラ構築入門 第2版 安全で堅牢な本番環境のつくり方
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4.5 NAT ゲートウェイ
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これを実際のネットワークに置き換えると、それぞれの概念は表4.6のように対応しま
す（図4.25 下）。
表4.6 現実世界とNATの対応
現実世界 ネットワーク
アパート NATゲートウェイ
アパートの住所 NATゲートウェイのパブリックIP
部屋番号 プライベートIP
そして、内部から外部に通信を行うときに、部屋番号（プライベートIP）だけの情報を
住所（パブリックIP）も含めた情報に変換するような仕組みのことをNAT（Network
Address Translation：ネットワークアドレス変換）と呼びます。
作成内容
それでは、作成するNATゲートウェイを確認しましょう。ここではパブリックサブ
ネットが2 つあるので、それぞれにNATゲートウェイを作成します（表 4.7）。
表4.7 NATゲートウェイの設定項目
対象 項目 値 説明
NATゲートウェイ１ 名前 sample-ngw-01 NAT ゲートウェイの名前
サブネット sample-subnet-public01 NATゲートウェイを作成するサ
ブネット
接続タイプ パブリック インターネットに接続する場合
はパブリック、他のVPCに接続
する場合はプライベート
Elastic IP割り当てID （自動生成） NATゲートウェイに割り当てる
Elastic IP
NATゲートウェイ２ 名前 sample-ngw-02 同上
サブネット sample-subnet-public02 ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.