1-to-1 NAT maps a public Internet IP to an IP on your local area network (LAN).
If you did not select this module to be included during the installation process, you must first install the module.
You can find this feature in the menu system at the following location:
You can map 1-to-1 NAT IPs in one of two ways:
Some protocols can be finicky behind firewalls. In this case you want to configure 1-to-1 NAT with no firewall (make sure you secure the target LAN system some other way!).
If you only want to map selective ports, for example the TCP 80 web server port, you can configure particular ports in your 1-to-1 NAT mapping.
If you have Multi-WAN enabled, please review the topic on source-based routes. Each 1-to-1 NAT rule must typically be assigned to an external MultiWAN interface as shown by example below: search?q=clearos%2C%20clearos%20content%2C%201%20to%201%20NAT%2C%20app-nat_firewall%2C%20clearos5%2C%20userguide%2C%20categorynetwork%2C%20subcategoryfirewall%2C%20maintainer_dloper&btnI=lucky