NAT should be configured when the RM cluster appears with different external and internal addresses. I.e there are internal IP addresses inside the Demilitarized Zone for accessing securely the RM and there are external IP addresses - the IP addresses that can be used to access the RM management servers from internet.
To configure NAT follow the steps below:
Go to System Configuration in the console and select Configure System action. This will open the RM System Configuration dialog.
Open the Networks tab. You'll see the default network which is always available. Your internal RM IP is part of this default network.
Define a new network that corresponds to the external network. Select New Network from the Networks menu, or right-click the default node.
The Create New Network dialog will appear. Assign a name to the new network.
Select the newly created network from the list and open the Hosts tab, located in the bottom of the dialog.
In the list Backend Host URLs in Network select an entry that corresponds to one of your RM server instances and then press the Add... button. In the Add New Host URL dialog, enter URL. Example:
socket://<public_ip_or_host_name>:11449.Go to the "default" network again and open the "Filters" tab.Using the "Add", "Remove", "Up", "Down" buttons fill the following content in the "Network Filters" table:
Priority | Net Address | Net Mask | Destination---------------------------------------------0|10.0.0.0|255.0.0.0|default1|0.0.0.0|0.0.0.0| externAll nodes with addresses 10.* are considered as located in the internal network. Addresses different than 10.* are considered part of the external network. Note, that the order (priority) of the filters in the table is important.
Confirm the RM System Configuration dialog with OK and after the system re-initialization is performed, the RM will be able to work correctly with your NAT configuration.
Repeat the steps above on all RM instances.