AWS Networking Explained: How Internet Gateways, Route Tables, NACLs, and Security Groups Work Together

AWS Networking Explained: How Internet Gateways, Route Tables, NACLs, and Security Groups Work Together

https://knowledge.businesscompassllc.com/aws-networking-explained-how-internet-gateways-route-tables-nacls-and-security-groups-work-together/

If you’ve ever set up an AWS VPC and wondered why your EC2 instance can’t reach the internet — or why traffic that should be blocked keeps getting through — you’re not alone. AWS networking basics trip up a lot of developers and cloud engineers, especially when multiple components are involved and it’s not obvious which one is causing the problem.