A NAT (Network Address Translation) gateway, which represents a router that lets instances without public IPs contact the public internet without exposing the instance to inbound internet traffic. For more information, see NAT Gateway.
To use any of the API operations, you must be authorized in an IAM policy. If you are not authorized, talk to an administrator. If you are an administrator who needs to write policies to give users access, see Getting Started with Policies.
Warning: Oracle recommends that you avoid using any confidential information when you supply string values using the API.