Creating a NAT Gateway
You may need to create an NAT gateway if it is not already configured for your VPC setup. See the steps below for creating this resource using the VPC Dashboard in the AWS Management Console.
To create a NAT gateway in the AWS Management Console:
From the VPC Dashboard, click NAT gateways in the side navigation bar.
Click the Create NAT gateway button in the top right.
On the Create NAT gateway page, set the following:
a. Enter a name for your NAT gateway.
b. For Subnet, select a public subnet that you created in the same VPC.
c. For Connectivity type, select Public.
d. Associate an Elastic IP.
Click the Create NAT gateway button.