Port Triggering - D-Link DSL-2750U User Manual

Click Apply to save the settings. The page shown in the following figure
appears. A virtual server is added.

4.4.3 Port Triggering

Some applications require that specific ports in the firewall of the device are
open for the remote parties to access. Application rules dynamically open the
firewall ports when an application on the LAN initiates a TCP/UDP connection to
a remote party using the trigger ports. The device allows the remote party from
the WAN side to establish new connections back to the application on the LAN
side using the firewall ports. A maximum of 32 entries can be configured.
Choose ADVANCED > Port Triggering. The page shown in the following figure
appears.
DSL-2750U User Manual
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