November 2015
Intermediate to advanced
194 pages
4h 16m
English
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Configuring security groups
Security groups are like firewalls for your EC2 instances. If you don't specify the security group while creating instance in EC2-VPC, then AWS automatically assigns the default security group of the EC2-VPC to the instance. We can configure the inbound and outbound rules for security groups. We can also change these inbound and outbound rules while the instance is running. These changes are automatically applied.
For every VPC, we get a default security group, which we can't delete. You can't use a security group that you created for EC2-VPC when you launch an instance in EC2-Classic. You also can't use security group that you created for EC2-Classic, when you launch an instance in EC2-VPC. After you launch an instance ...
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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.