PLANET VRT-420N - Manual (Page 51)

Click on [App] – [Port Range Forward] tab. You will see the following screen.
Configure [DMZ] Settings following the instructions below
DMZ
Select Enable to enable DMZ function.
Select Disable to disable DMZ function.
DMZ IP Address
Enter the IP address of a particular host in your LAN which will receive all the
packets originally going to the WAN port / Public IP address above.
Configure [Port Range Forwarding] Settings following the instructions below
Port Forwarding Select Enable / Disable to enable/disable Port Forwarding
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