____________________________________________________________________________________ 
____________________________________________________________________________________ 
            NTU Optical Network Terminals    43 
 
To add rules to the table, click the Add button. Click Remove in front of a selected rule to remove it. 
 
 
–  Use Interface— interface that is used. 
 
Available are only the interfaces configured to work in the router mode with enabled translation of 
network addresses. 
 
–  Application Name—application settings: 
–  Select an application—select a preconfigured rule; 
–  Custom an application—create custom rules not listed in the Select an Application list. 
As opposed to the Virtual Server function, you don’t need to specify a fixed IP address of the computer in 
LAN. 
–  Trigger Port Start—the first port of the port range to act as a trigger; 
–  Trigger Port End—the last port of the port range to act as a trigger; 
–  Trigger Protocol—the protocol used for the trigger; 
–  Open Port Start—the first port of the port range to be opened by the router; 
–  Open Port End—the last port of the port range to be opened by the router; 
–  Open Protocol—the protocol used for the opened ports. 
Click the Apply/Save button to accept and save the changes.