September 2018
Beginner to intermediate
174 pages
3h 27m
English
Content preview from Designing AWS Environments
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CIDR
When you work with VPCs, subnets, security groups, and network access control lists, you will often need to specify IP address ranges. CIDR provides a succinct method, known as CIDR notation, for defining IP address blocks.
In this section, we're going to briefly explain CIDR notation and then review the valid IP address ranges you can use when defining your VPC and subnets. We'll also discuss IP addresses that are reserved by AWS, and why this is important when you're sizing your subnets.
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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.