Book Image

AWS Networking Cookbook

By : Satyajit Das, Jhalak Modi
Book Image

AWS Networking Cookbook

By: Satyajit Das, Jhalak Modi

Overview of this book

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.
Table of Contents (10 chapters)

Internet not accessible in the private subnet instance (NAT Gateway)

While working with a private instance, we face various issues in terms of an EC2 instance connecting to the internet or any other instance in the subnet.

How to do it...

  1. The first troubleshooting step starts with pinging the destination (any other host or internet).
Make sure that you test the destination from another server or your own computer because the destination host/website should have ICMP enabled.
  1. Verify that NAT Gateway and EC2 are attached to the desired subnet.
  2. Ensure that NAT Gateway has been created in a public subnet.
Public subnet should have a public Route Table having a default route pointing to the Internet Gateway.
  1. Check that the...