Book Image

AWS Security Cookbook

By : Heartin Kanikathottu
Book Image

AWS Security Cookbook

By: Heartin Kanikathottu

Overview of this book

As a security consultant, securing your infrastructure by implementing policies and following best practices is critical. This cookbook discusses practical solutions to the most common problems related to safeguarding infrastructure, covering services and features within AWS that can help you implement security models such as the CIA triad (confidentiality, integrity, and availability), and the AAA triad (authentication, authorization, and availability), along with non-repudiation. The book begins with IAM and S3 policies and later gets you up to speed with data security, application security, monitoring, and compliance. This includes everything from using firewalls and load balancers to secure endpoints, to leveraging Cognito for managing users and authentication. Over the course of this book, you'll learn to use AWS security services such as Config for monitoring, as well as maintain compliance with GuardDuty, Macie, and Inspector. Finally, the book covers cloud security best practices and demonstrates how you can integrate additional security services such as Glacier Vault Lock and Security Hub to further strengthen your infrastructure. By the end of this book, you'll be well versed in the techniques required for securing AWS deployments, along with having the knowledge to prepare for the AWS Certified Security – Specialty certification.
Table of Contents (12 chapters)

Working with NACLs

In this recipe, we will create a new NACL with no SSH support and associate one of our subnets with that NACL. By doing this, we'll see that we cannot SSH into EC2 instances within that subnet. After, we will add SSH support to the NACL and try to SSH again.

Getting ready

To complete the steps within this recipe, we need a custom VPC with the following configurations:

  • Create a VPC by following the Creating a VPC in AWS recipe. Create the subnet by following the Creating subnets in a VPC recipe.
  • Launch an instance into our public subnet with a security group configuration that allows our local machine IP to SSH into that machine. You can do this by referring to the Launching an EC2 instance into a...