May 2024
Intermediate
248 pages
6h 59m
Japanese
Content preview from 図解まるわかり 仮想化のしくみ
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.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.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.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.
186
VPC（9-2参照）内のリソースにアクセスするためには、必要最小限
の通信・権限制御が必要です。
VPC内では通信制御について、セキュリティグループでEC2 インスタン
スレベルの通信制御を行います。セキュリティグループはデフォルトでイ
ンバウンド通信は全拒否、アウトバウンド通信は全許可になっています。
ネットワークアクセスコントロールリスト（NACL）はサブネットレベル
の通信制御用を行います（図 10-11）。セキュリティグループとは違い、
NACLはデフォルトですべての通信が許可されているため、不要な通信を
拒否するルールの設定が必要です。セキュリティグループとNACL両方と
も設定している場合、双方で通信が許可されなければなりません。
VPC外のサービス（AWS Lambda、S3 など）がVPC内のリソースにア
クセスするために、サービスに必要最小限の権限を持つIAMロールとポリ
シーを設定する必要があります（図10-12）。
VPCとVPC外のサービス間の通信を可能にするのがVPCエンドポイン
トです。 VPC エンドポイントにはインタフェース型とゲートウェイ型があ
ります。インターネットを経由せずにサービスと接続したい場合はゲート
ウェイ型を利用します。
オンプレミスとVPC内のリソース間の通信を可能にするためには、
VPNや Direct Connect を使用します。別の VPCとの通信のためには、
VPC Peering やTransit Gateway を利用します。
AWS
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.