NAT Gateway

Network Address Translation

Overview

Help computers on private subnet, redirect traffic to the Internet. Like a receptionist at a office, who receive phone calls and forwards them to the right person at the office.

Steps

1. Put NAT Gateway in Public subnet

2. Add a record in Route table of Private subnet. That record (0.0.0.0) points to the NAT Gateway.

Best practices

• Use 1 NAT per AZ.

Trivia

• Always put NAT Gateway in a PUBLIC subnet.

• IPv4 only, can not used with IPv6

• a regional resource.