One-to-One NAT creates a relationship which maps valid external addresses to internal addresses hidden by NAT. Machines with an internal address may be accessed at the corresponding external valid IP address.

Creating this relationship between internal and external addresses is done by defining internal and external address ranges of equal length. Once that relationship is defined, the machine with the first internal address is accessible at the first IP address in the external address range, the second machine at the second external IP address, and so on.

Consider a LAN for which the ISP has assigned the IP addresses range from 209.19.28.16 to 209.19.28.31, with 209.19.28.16 used as the RV082 WAN IP (NAT Public) Address. The address range of 192.168.168.1 to 192.168.168.255 is used for the machines on the LAN. Typically, only machines that have been designated as Public LAN Servers will be accessible from the Internet. However, with One-to-One NAT the machines with the internal IP addresses of 192.168.168.2 to 192.168.168.15 may be accessed at the corresponding external IP address.

Note: The RV082 WAN IP (NAT Public) Address may not be included in a range.

1. Enable One-to-One NAT: If you check the box, One-to-One NAT will be enabled.
2. Private Range Begin: Enter the beginning IP address of the private address range being mapped in the Private Range Begin field. This will be the IP address of the first machine being made accessible from the Internet.
3. Public Range Begin: Enter the beginning IP address of the public address range being mapped in the Public Range Begin field. This address will be assigned by the ISP. The RV082 WAN IP (NAT Public) Address may not be included in the range.
4. Range Length: Enter the number of IP addresses for the range. The range length may not exceed the number of valid IP address. Up to 64 ranges may be added. To map a single address, use a Range Length of 1.

Note: One-to-One NAT does change the way the firewall functions work. Access to machines on the LAN from the Internet will be allowed unless Network Access Rules are set.

You can click Add to List button or Delete selected range.

Click the Save Settings button to save the settings or click the Cancel Changes button to undo your changes.