Book Image

AWS Administration - The Definitive Guide

By : Yohan Wadia, Naveen Kumar Vijayakumar
Book Image

AWS Administration - The Definitive Guide

By: Yohan Wadia, Naveen Kumar Vijayakumar

Overview of this book

AWS is at the forefront of Cloud Computing today. Many businesses are moving away from traditional datacenters and toward AWS because of its reliability, vast service offerings, lower costs, and high rate of innovation. Because of its versatility and flexible design, AWS can be used to accomplish a variety of simple and complicated tasks such as hosting multitier websites, running large scale parallel processing, content delivery, petabyte storage and archival, and lots more. Whether you are a seasoned sysadmin or a rookie, this book will provide you with all the necessary skills to design, deploy, and manage your applications on the AWS cloud platform. The book guides you through the core AWS services such as IAM, EC2, VPC, RDS, and S3 using a simple real world application hosting example that you can relate to. Each chapter is designed to provide you with the most information possible about a particular AWS service coupled with easy to follow hands-on steps, best practices, tips, and recommendations. By the end of the book, you will be able to create a highly secure, fault tolerant, and scalable environment for your applications to run on.
Table of Contents (17 chapters)
AWS Administration – The Definitive Guide
About the Author
About the Reviewer

An overview of Amazon VPC

So far we have learnt a lot about EC2, its features, and uses, and how we can deploy scalable and fault tolerant applications using it, but EC2 does come with its own sets of minor drawbacks. For starters, you do not control the IP addressing of your instances, apart from adding an Elastic IP address to your instance. By design, each of your instances will get a single private and public IP address, which is routable on the Internet—again, something you cannot control. Also, EC2 security groups have the capability to add rules for inbound traffic only; there is no support for providing any outbound traffic rules. So, although EC2 is good for hosting your applications, it is still not that secure. The answer to all your problems is Amazon VPC!

Amazon VPC is a logically isolated part of the AWS cloud that enables you to build and use your own logical subnets and networks. In a simpler sense, you get to build your own network topology and spin up instances within it...