AWS VPC & Networking

VPC (Virtual Private Cloud)
So, within a VPC, there might be multiple subnets but in each subnet, there will be a public subnet and a private subnet. One can access the public subnet from outside but they can not access the private subnet.

To give the public subnet a way to connect to internet, Internet gateway is used but and to give private subnet to update itself, NAT gateway is used which ultimately resides under public subnet and is connected to private subnet.

Again, Network ACL is situated on the Subnet layer and Security groups provide security for Instances.


VPC Flow Logs

VPC Peering

VPC Endpoints

Site to site VPN & Direct VPN

Site to site VPN

Transit Gateway

Summary