How do I use the Special Applications feature on my DI‑604/614 router?


Some applications require multiple connections, such as Internetgaming, video conferencing, Internet telephony, VPNs, and others.These applications have difficulties working through NAT (NetworkAddress Translation). If you need to run applications that requiremultiple connections, specify the port normally associated with anapplication in the Trigger Port field, select theprotocol type as TCP (Transmission Control Protocol, UDP (UserDatagram Protocol), or both, then enter the public ports associatedwith the trigger port to open them for inbound traffic.

Step 1 Open your web browser and enter the IPaddress of your router (

Step 2 Enter your username (admin) and password,if any.

Step 3 Click on Advanced tab onthe top and then Applications on the leftside.

Name - This is the name referencing the specialapplication.

Trigger Port - This is the port used to triggerthe application. It can be either a single port or a range ofports.

Trigger Type - This is the protocol used totrigger the special application.

Public Port - This is the port number on the WANside that will be used to access the application. You may define asingle port or a range of ports. You can use a comma to addmultiple ports or port ranges.

Public Type - This is the protocol used for thespecial application.

At the bottom of the screen, there are already defined well-knownspecial applications. To use them, click on the edit icon andenable the service.

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