Zte MF612 User Manual page 38

If you select Enable, the Virtual Server Settings will appear:

IP Address: Set IP address for the virtual server.

Port Range: Set port numbers for the virtual server.

Protocol: Set protocol for the virtual server.

Comment: Type comment for the virtual server settings.
Select Enable, and input the detail information in the Virtual Server
Settings area, and then click Apply to add a new rule. Click Delete to
delete the rule which you selected. Click Reset to clear what you
select or input.
4. DMZ
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