AWS Network

The Default VPC

The default VPC provided by AWS is great for testing stuffs however they are not that great in production environment because they are completely open and they all have internet gateway which will make everything you deploy accessible to the internet.

CIDR - Classless Inter-Domain Routing

This is the private network address range that we can withing a VPC.

10.0.0.0
172.31.0.0
192.168.0.0