Working with AWS Certificate Manager Private Certificate Authorities


Course Introduction
VPC Fundamentals
What is a VPC?
PREVIEW16m 20s
VPC Security and Control
VPC Connectivity
Introduction to AWS PrivateLink
VPC Sharing using the AWS Resource Access Manager
Understanding Direct Connect, Implementation and Configuration
Why Direct Connect?
5m 25s
Understanding AWS Direct Connect - Connectivity Options
7m 3s
Examining AWS Routing
AWS Default Routing

The course is part of this learning path

Start course
3h 55m

This section of the AWS Certified Solutions Architect - Professional learning path introduces you to the core networking concepts and services relevant to the SAP-C02 exam. We start with an introduction to the AWS Virtual Private Network (VPC) and networking services. We then understand the options available and learn how to select and apply AWS networking, DNS, and content delivery services to meet specific design scenarios relevant to the AWS Certified Solutions Architect - Professional exam. 

Want more? Try a Lab Playground or do a Lab Challenge

Learning Objectives

  • Get a foundational understanding of VPCs, their security, and connectivity
  • Learn about VPC sharing using the AWS Resource Access Manager
  • Discover inter-regional and intra-regional communication patterns in AWS
  • Learn about AWS Direct Connect, along with its implementation, configuration, and connectivity options
  • Understand routing in AWS, including static and dynamic routing
  • Understand the basics of networking, including Elastic IP addresses, Elastic Network Interfaces, networking with EC2, VPC endpoints, and AWS Global Accelerator
  • Learn about the DNS and content delivery services Amazon Route 53 and Amazon CloudFront

AWS Certificate Manager is ready and able to issue public certificates without any additional configuration. If you want AWS Certificate Manager to issue private certificates, then you must first create a Private Certificate Authority. AWS Certificate Manager Private Certificate Authority is a managed service. AWS will take on the day-to-day responsibility for the certificate authority infrastructure, its high availability, and its backups. 

To use AWS Certificate Manager Private Certificate Authority, you must create a certificate hierarchy, you must configure a root certificate authority, and a subordinate certificate authority. A root certificate authority is the start of the chain of trust. When you create a root certificate authority, a self-signed certificate is created. This self-signed certificate can be imported to a device's root certificate store so that the device trusts any certificates issued by a certificate authority that is digitally signed by the root authority's self-signed certificate.

Root certificate authorities don't issue certificates to devices or services. Instead, certificates are issued from subordinate certificate authorities. Subordinate certificate authorities have a certificate digitally signed by the root certificate authority's private key. They in turn sign any certificates they issue with their private key. By verifying the signatures of the subordinate CA and the root CA, you can be confident that the certificates issued by the subordinate CA can be trusted and used to establish a secure connection. So, why do we need AWS Certificate Manager Private Certificate Authorities?

Well, if you have internal applications hosted in AWS or on-premise that require SSL or TLS certificates, then you will need digital certificates issued by a CA. These certificates might be for internal domains and name spaces that we can't or do not want to validate when requested a public certificate. And we probably want to simplify certificate for a management, giving day-to-day responsibility of running the certificate for AWS. AWS Certificate Manager Private Certificate Authority is a paid-for service. You pay monthly fees for each certificate authority you create and you pay one-off fees for each private certificate that is issued by your Private Certificate Authority.


About the Author
Learning Paths

Danny has over 20 years of IT experience as a software developer, cloud engineer, and technical trainer. After attending a conference on cloud computing in 2009, he knew he wanted to build his career around what was still a very new, emerging technology at the time — and share this transformational knowledge with others. He has spoken to IT professional audiences at local, regional, and national user groups and conferences. He has delivered in-person classroom and virtual training, interactive webinars, and authored video training courses covering many different technologies, including Amazon Web Services. He currently has six active AWS certifications, including certifications at the Professional and Specialty level.