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AWS Networking Cookbook
AWS Networking Cookbook

AWS Networking Cookbook: Powerful recipes to overcome the pain points of optimizing your Virtual Private Cloud (VPC)

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AWS Networking Cookbook

Building Your Own Custom VPC

In this chapter, we'll cover the following recipes:

  • Managing a VPC
  • Managing public and private subnets
  • Managing a Network ACL
  • Managing a Security Group
  • Managing an Internet Gateway
  • Managing a NAT Gateway
  • Managing a Route Table
  • Managing EC2 instances

Introduction

AWS provides a very user friendly interface for managing all of its services. This enables users to create services at the click of a button as and when required and delete them when they are not necessary. We shall go through recipes for creating the most used network components that we have to use, in case we host our application in AWS. Also, we shall learn how to create instances in the network that we built.

Managing a VPC

AWS VPC is a virtual network in AWS cloud that is similar to the conventional network in a corporate data center. A VPC created in an account isolates all resources in it from any other VPC created by the same or other accounts.

Getting ready

We need an AWS account and a user with proper permissions for creating a VPC.

How to do it...

  1. Log in to your AWS account. AWS provides a default VPC in each region where the account has been created, with all the components listed above in each Availability Zone (AZ) in that region. After logging in to the account...

Managing public and private subnets

Subnets of AWS are similar to VLAN in DC with a specific range of IPs isolated from an other VLAN/subnet. Each AZ in a region can host multiple subnets, as per the requirement. A subnet is bound by one AZ limit and can't span across multiple AZs. There are two types of subnets; instances created in a public subnet are assigned a public IP and can be accessed from outside the VPC. There is another type of subnet that is called the private subnet. Public IP is not assigned to instance created inside this type of subnet. A default VPC has default subnets associated with it; all default subnets are public subnets.

Getting ready

We need an AWS account and a user with proper permissions for...

Managing a Network ACL

An AWS Network Access Control List (NACL) works as a firewall at the VPC level for controlling incoming and outgoing requests from one or more subnets associated with that VPC. It is used in conjunction with the Security Group (SG) in controlling traffic to the AWS. When we create a VPC, a default NACL is created that is open to every IP and port. The subnet is associated with the default NACL created during its creation. We can create a custom NACL and associate it with a subnet, thus replacing the default NACL.

Getting ready

We need an AWS account and a user with proper permissions to create a security group. We also need to configure the AWS CLI in our local machine. We also need a VPC creation in...

Managing a Security Group

Security Group (SG) works as a virtual firewall that controls incoming traffic to protect resources hosted in AWS, such as EC2 and RDS, from unwanted access. The same SGs should be associated with services/resources having the same functionality and security requirements such as a cluster of web servers. SGs can span across different subnets in a VPC. SGs are stateful firewalls where you can define rules for a valid source, protocol, and port for incoming and outgoing traffic. Stateful meaning--if the connection from source to destination is allowed, the return path is also allowed. At least one SG needs to be attached to the resource at the time of resource creation. More than one SG can also be attached to a resource. The rules of an SG can be modified at any time and they will take effect immediately. An SG can be detached from the resource at any...

Managing an Internet Gateway

An Internet Gateway is an AWS component that enables communication between resources hosted in the VPC and the internet. It is a horizontally scalable and highly available component. It doesn't enforce any network bandwidth constraints. It is the channel through which services hosted inside the VPC are accessed by the outside world. It also enables resources hosted in the AWS to connect to the internet.

Getting ready

The prerequisites for this section are the same as recipe, Managing a Network ACL.

How to do it...

  1. Log in to your AWS account...

Managing a NAT Gateway

By default, there is no way that resources hosted in a private subnet can access the internet. NAT is a way to achieve that. However, any resource outside the VPC can't access the resources in a private subnet. We can use a NAT instance or a NAT Gateway to achieve this. However NAT Gateway is a scalable, managed service that does not require any administration. In this section, we will see how to manage a NAT Gateway.

Getting ready

We need to have an AWS account created with a user that has permissions to manage the NAT which we already have. We need to create an Elastic IP to be attached to with NAT, which is provided here. We shall learn details about Elastic IPs in the later sections.

...

Managing a Route Table

A Route Table contains a set of rules that control how the network traffic flows within a VPC and outside of it. Each subnet must be associated with one Route Table. However, Route Tables may contain more than one subnet that needs the same route configuration.

Getting ready

We need to have an AWS account created with a user that has permissions to manage Route Tables, which we already have. We have already created two subnets, one IG, and one NAT Gateway. By configuring these with the Route Table, we shall make one subnet a public subnet and the other one a private subnet.

How to do it...

...

Managing EC2 instances

EC2 is an infrastructure in the AWS Cloud with certain compute, memory, and network resources. Though EC2 is not a networking component, we shall try to create a couple of them to check whether the network components that we have created work with EC2. We shall also understand how networking components integrate with resources in AWS.

Getting ready

We need to have an AWS account created with a user that has permission to manage EC2 instances, which we already have.

How to do it...

  1. Log in to your AWS account and open the EC2 Dashboard:
EC2 Dashboard...
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Key benefits

  • - Master AWS networking concepts with AWS Networking Cookbook.
  • -Design and implement highly available connectivity and multi-regioned AWS solutions
  • -A recipe-based guide that will eliminate the complications of AWS networking.
  • -A guide to automate networking services and features

Description

This book starts with practical recipes on the fundamentals of cloud networking and gradually moves on to configuring networks and implementing infrastructure automation. This book then supplies in-depth recipes on networking components like Network Interface, Internet Gateways, DNS, Elastic IP addresses, and VPN CloudHub. Later, this book also delves into designing, implementing, and optimizing static and dynamic routing architectures, multi-region solutions, and highly available connectivity for your enterprise. Finally, this book will teach you to troubleshoot your VPC's network, increasing your VPC's efficiency. By the end of this book, you will have advanced knowledge of AWS networking concepts and technologies and will have mastered implementing infrastructure automation and optimizing your VPC.

Who is this book for?

This book targets administrators, network engineers, and solution architects who are looking at optimizing their cloud platform's connectivity. Some basic understanding of AWS would be beneficial.

What you will learn

  • Create basic network in AWS
  • Create production grade network in AWS
  • Create global scale network in AWS
  • Security and Compliance with AWS Network
  • Troubleshooting, best practices and limitations of AWS network
  • Pricing model of AWS network components
  • Route 53 and Cloudfront concepts and routing policies
  • VPC Automation using Ansible and CloudFormation
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Aug 24, 2017
Length: 366 pages
Edition : 1st
Language : English
ISBN-13 : 9781787123243
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Product Details

Publication date : Aug 24, 2017
Length: 366 pages
Edition : 1st
Language : English
ISBN-13 : 9781787123243
Vendor :
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Table of Contents

9 Chapters
Getting Started with AWS Networking Components Chevron down icon Chevron up icon
Building Your Own Custom VPC Chevron down icon Chevron up icon
VPC Advanced Components Chevron down icon Chevron up icon
Configuring Global Scale Infrastructure Chevron down icon Chevron up icon
Working with Infrastructure Automation Chevron down icon Chevron up icon
Working with Route 53 Chevron down icon Chevron up icon
Cloud Security and Network Compliance Chevron down icon Chevron up icon
Troubleshooting and VPC Limits Chevron down icon Chevron up icon
Pricing of VPC and Related Components Chevron down icon Chevron up icon

Customer reviews

Top Reviews
Rating distribution
Full star icon Full star icon Full star icon Half star icon Empty star icon 3.6
(9 Ratings)
5 star 55.6%
4 star 0%
3 star 11.1%
2 star 11.1%
1 star 22.2%
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Suraj p. Apr 13, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Good Book buy it
Amazon Verified review Amazon
Rick Mar 20, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
added to my reference bookshelf
Amazon Verified review Amazon
Amazon Customer Nov 06, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This is an excellent book on AWS Networking. The authors have explained all necessary details for successfully creating deployment and network architecture for solutions on AWS platform. A must read for people who wants to practically design and optimize VPC on AWS cloud.Kudos to authors for coming up with such a useful title.
Amazon Verified review Amazon
Prasenjit Das Oct 26, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Excellent written and explained. Extremely useful. A must read book. You can use it for all practical approach to create and optimize your VPC.
Amazon Verified review Amazon
Tuan Loc Nguyen Oct 14, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
excellent book- very didactic and intuitive from scratch to build AWS networking from VPC to DirectConnect. one missing about new features on VPC of DirectConnect Gw, LAG and transit VPC and more fancy topologies are not yet updated in this release
Amazon Verified review Amazon
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