September 2018
Beginner to intermediate
174 pages
3h 27m
English
Content preview from Designing AWS Environments
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Bastion instances
To follow best security practices, we need to secure our vulnerable instances, such as backend app servers, and databases in private subnets. In a previous section, we mentioned that NAT instances, or an NAT gateway, can be used to give our private instances access to the internet, to download security patches, or to access public AWS services. However, our server administrators will need to be able to connect with our private instances, in order to perform upgrades or security updates. Since there is no direct route to the instances from the internet, we need to launch a Bastion instance, in a public subnet. The administrators can connect to this instance, and from there are able to log in to the private instances. The ...
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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.