D-Link DSL-2790U User Manual page 60

Section 4 - Configuration
WAN Select the interface to use with the rule.
Connection:
Select a Select an service for a preset application or enter a name in Custom
Service: Server.
Schedule: Select a schedule or choose Always.
Server Enter an IP address to appoint the corresponding client to receive
IP Address: forwarded packets.
External Port Enter the external port(s).
Start/End:
Protocol: Select TCP or UDP.
Internal Port Enter the internal port(s).
Start/End:
LAN Check the box to enable the LAN loopback feature.
Loopback:
Click Apply when you are done.
D-Link DSL-2790U Wireless N300 ADSL2+ Modem Router User Manual
PORT TRIGGERING
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