You put what in a public subnet‽
So you've split your VPC into different tiers which is great, but why did you put THAT in your public subnet and not a private one?
Troubleshooting with VPC Flow Logs
So you built and secured your VPC.
But solutions are not working?
This article looks at how you can understand VPC Flow Logs and use them to troubleshoot connectivity in AWS.
How to use NACLs and Security Groups
Where and how should you use NACLs and Security Groups to ensure you have a secure network on AWS.
Network Access Control Lists vs Security Groups
What are NACLs and Security Groups?
What are the differences?
How do they work?
This post hopes to explain the different mechanisms used so you have a better understanding of how to use them.
Why use a Transit Gateway
Transit Gateway or VPC Peering?
A common question but not an easy answer. This is why I recommend Transit Gateway for anything over a POC.
Creating a Well-Architected VPC
So how do we make our VPC Well-Architected and Secure?
This post gives you one option for a Well-Architected VPC.
How to Well-Architect network connectivity to AWS services.
With multiple ways to access AWS Services which is the best? I look at 3 common access patterns and see if they hold up to the Well-Architected Framework.