ARRIS Consumer Care

SVG2482AC: Port Triggering Setup

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Question

How do I configure port triggers in my SVG2482AC Gateway?

Answer

When setting up a device for remote access, there may be situations in which Port Triggers need to be set up in the SVG2482AC instead of Port Forwarding. Port Forwarding allows the configured ports to always stay open. With Port Triggering, the ports are opened temporarily, and are only opened when it is requested by the application.

Port Triggers is a safer method for opening specific ports for special applications (e.g. video conferencing programs, interactive gaming, file transfer in chat programs, etc.) because they are dynamically triggered and not held open constantly or erroneously left open via the router administrator and exposed for potential hackers to discover.

When the SVG2482AC detects outgoing data on a specific port number set in it's Trigger Range, the resulting ports set in it's Target Range are opened for incoming data. If no outgoing request is detected from the Trigger Range for 10 minutes, the ports listed in the Target Range will close. Port Triggering is not enabled by default. This document describes how to create a Port Triggers entry.

NOTE 1: When setting up a host device like a web server, port forwarding should be used instead of port triggering. This way, the ports will stay open for users to connect. To setup port forwarding in the SVG2482AC, please refer to Answer # 16856 - SVG2482AC: Port Forwarding Setup.

NOTE 2: Only one device should make outbound connections on a specific port. If two or more devices attempt to make outbound connections on the same port at a given time, there will be a conflict, and port triggering will not work correctly.

Creating a Port Triggering Entry

Launch a web browser, such as Internet Explorer, Firefox, or Safari. Enter http://10.0.0.1 into the address box, and press the Enter key. The Login page will appear.
On the Login page, enter admin in the Username field.
Enter password in the Password field then click the Login button. The Gateway > At a Glance page will appear.

NOTE: A prompt to change the password appears when the SVG2482AC is using the default password. To change the password click the OK button or click the Cancel button to bypass it.
On the left hand-menu, click the Advanced link and then click the Port Triggering link on the sub-menu. The Advanced > Port Triggering page will appear.
On the Advanced > Port Triggering page, click the Enable option for Port Triggering.
Click the + Add Port Trigger button. The Advanced > Port Triggering > Add Port Trigger page will appear.
On the Advanced > Port Triggering > Add Port Trigger page, enter a desired name for the Service Name field.
Click the Service Type drop-down menu and select TCP/UDP.

NOTE: Please refer to the device's user guide to determine the required ports and protocols.
If one port is to be used, enter the port number. If a range of ports are to be used, enter the first number of the range into the Trigger Port From field.
If one port is to be used, enter the port number. If a range of ports are to be used, enter the last number of the range into the Trigger Port To field.
If one port is to be used, enter the port number. If a range of ports are to be used, enter the first number of the range into the Target Port From field.
If one port is to be used, enter the port number. If a range of ports are to be used, enter the first number of the range into the Target Port To field.
Click the Add button. The Advanced > Port Triggering page will appear.
The port triggering entry will appear below Port Triggering section. Repeat steps 6 - 13 to setup additional port triggers.

NOTE: To disable Port Triggering, click the Disable button for the Port Triggering field.