1-to-1 NAT maps a public IP address to a private IP address. It allows systems behind the firewall and configured with private IP addresses (RFC 1918) appear to have public IP addresses.This feature requires additional public IP addresses from your Internet service provider (ISP).
To learn more about this app, click here
Documentation for ClearOS 6 can be found here.
Documentation for ClearOS 7 can be found here.