By default, NAT discards any Internet-based requests to access computers within the private network.
As such, all computers on the private network are inaccessible from the Internet in a NAT solution. Choose the default configuration when:
- Users on the private network require access to Internet sites
- Users on the Internet must not have access to any of the private network resource computers
In situations where the default security provided by NAT is not appropriate, select the method for exposing private network resources to the Internet.
You can select the method based on the number of public addresses available to the organization.
The following table describes the strategies for enabling access to private network resources.