How to build a custom VPC?

In order to build a custom VPC, the following steps must be followed:

Create a Virtual Private Cloud
Then create Subnets
Further create an Internet Gateway
Attach this new Gateway to your VPC
Create a new Route Table
Add the gateway as a route to the new route table
Add a subnet to the route table’s subnet association
Create a web server for public subnet and a database server for the private subnet
Create a new security group for the NAT
Add HTTP and HTTPS inbound rules that let in traffic from the private subnets IP
Create a NAT for public subnet
Create an elastic IP
Associate this IP to the NAT
Disable destination/source checks for the NAT
Add NAT to the initial VPC route table as a route.

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