This recipe will describe how to create a 1:1 NAT entry.
1:1 NAT allows us to map a single external IP address to a single internal IP address, or we can map an external network to an internal network. We might have a scenario in which we acquired public IP addresses for different resources—for example, a web server. If the web server is a node on one of our private networks, then we must map the public address to the web server’s private address.
- Navigate to
Firewall|NAT. - Click on the 1:1 tab.
- Click on one of the
Addbuttons to add a new rule. - In the
External subnet IPtext field, enter the public IP address:
- Enter the private IP address in the
Internal IPtext field. Leave the drop-down menu set toSingle host. - Leave
Destinationset toAny. - Enter a brief description in the
Descriptiontext field. - When you are done making changes, click on the
Savebutton. - Click on the
Apply Changesbutton.
By adding a 1:1 NAT entry, we can translate an external IP address (or...