Book Image

AWS Certified Security – Specialty Exam Guide

By : Stuart Scott
Book Image

AWS Certified Security – Specialty Exam Guide

By: Stuart Scott

Overview of this book

AWS Certified Security – Specialty is a certification exam to validate your expertise in advanced cloud security. With an ever-increasing demand for AWS security skills in the cloud market, this certification can help you advance in your career. This book helps you prepare for the exam and gain certification by guiding you through building complex security solutions. From understanding the AWS shared responsibility model and identity and access management to implementing access management best practices, you'll gradually build on your skills. The book will also delve into securing instances and the principles of securing VPC infrastructure. Covering security threats, vulnerabilities, and attacks such as the DDoS attack, you'll discover how to mitigate these at different layers. You'll then cover compliance and learn how to use AWS to audit and govern infrastructure, as well as to focus on monitoring your environment by implementing logging mechanisms and tracking data. Later, you'll explore how to implement data encryption as you get hands-on with securing a live environment. Finally, you'll discover security best practices that will assist you in making critical decisions relating to cost, security,and deployment complexity. By the end of this AWS security book, you'll have the skills to pass the exam and design secure AWS solutions.
Table of Contents (27 chapters)
1
Section 1: The Exam and Preparation
3
Section 2: Security Responsibility and Access Management
8
Section 3: Security - a Layered Approach
15
Section 4: Monitoring, Logging, and Auditing
18
Section 5: Best Practices and Automation
21
Section 6: Encryption and Data Security

Configuring VPN routing options

Once you have created your VPN gateway and customer gateway, you are then in a position where you can begin to add routing configuration to your subnets to allow you to route traffic across to your corporate site via the VPN site-to-site connection. 

Let’s take a look at an example:

As you can see, AWS VPC has a 10.0.1.0/24 subnet within the VPC CIDR block of 10.0.0.0/16. The main route table has a manually added static route pointing to the network address space within the corporate data center on the other side of the VPN connection. You will notice that this route has been added with the destination pointing to our VPN gateway (vgw-wxyz6789). As a result of this route, any traffic destined for this network will go via the VPN gateway. 

A key point of understanding AWS routing in general is the principle of the longest prefix match. Understanding this can really help you troubleshoot routing issues. Longest prefix match determines...