D-Link DSL-4730B User Manual page 45

DSL-2730B User Manual
Click Add to add a virtual server.
Select a service for a preset application, or enter a name in the Custom Server
field.
Enter an IP address in the Server IP Address field, to appoint the
corresponding PC to receive forwarded packets.
The Ports show the ports that you want to open on the device. The TCP/UDP
means the protocol type of the opened ports.
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