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Tech Software:
How to Use Router Port Forwarding
 
Posted 9 months ago on 2/11/2018 and updated 9/16/2018
Take Away:

This article discusses how to implement router port forwarding or port triggering so you can have a camera view of a remote location such as a convenience store or restaurant on any PC, smartphone or tablet from anywhere.

KB102835



As a business owner, have you ever wished you could see what’s happening at your company when you aren‘t around? Wouldn’t it give you peace of mind to be able to check in on what is happening whenever you want? This can easily be accomplished with something called “router port forwarding” or “router port triggering”.

The “router port forwarding” or “router port triggering” technique means you are setting selected ports on your router to the designated IP address of the DVR that is connected to it. This will facilitate the viewing of the in store cameras on remotely located computing devices.

As an example, I have done this for a restaurant customer in my local area using an AT&T 2WIRE 1701HG gateway (DSL modem and router in one unit). This was working in conjunction with a “Q-see” brand DVR unit, model number QT426.

To obtain the ports that need to be forwarded on the AT&T gateway, you first need to connect a monitor to the video port on the QT426 DVR unit as well as a USB mouse for navigation. Next, you click on the “Network” icon, which will display a screen of information. Here you will see amongst other things, “HTTP Port” equals 80 and the “Server Port” equals 6036. These are the port numbers that will be forwarded on the AT&T gateway to the IP address of the DVR for this particular model. The port numbers will vary from one model DVR to the next.

Now, we need to go to the PC connected to the AT&T 1701HG gateway and bring up its homepage in the browser by typing its IP address, which is usually 192.168.1.254 for this AT&T gateway. Next, click the “Firewall” button followed by “Firewall Settings” button. Note, you may need to enter a predefined password to enter this section, so be sure to have it handy.

Now you are at the “Edit Firewall Settings” screen. Here you need to select the device you will forward the ports to. This will be the IP address of the DVR. In this case the IP address was 192.168.1.76. You find this next to the “Select a computer” section in the router’s home page. The next step is to click the “Add a new user-defined application” link. This will bring up a new screen titled “Edit Application”. This is where you forward the required ports to the DVR. Let’s do the first one, which is port 80 in this case. You fill out the “Application Name” with whatever description you want, just try to make it something relevant. Then you select the “TCP” protocol. Then you fill in the port range, which is From: 80 To: 80 for port 80. For “Protocol Timeout (seconds)”, you key in 86,400. Next, leave “Map To Host Port” blank. Also leave the “Application Type” set to “none (Default)”. Then click the “Add Definition” button to add it to the list. Now, on the first screen click the “Add a new user-defined application” link again and repeat this data entry for port 6036.

After both ports have been forwarded, you need to go to the “Edit Firewall Settings” screen and select the items just added under the “Applications” box in the left hand window pane. Then click the “Add” button to send them to the “Hosted Applications” box in the right hand window pane. Finally, click the “Done” button and that’s almost it...there is one more little thing.

This is actually a simple test to verify both your ports have been successfully forwarded to the DVR. Just key in http://canyouseeme.org in your browser. It will display the outside IP address of your router along with a box for keying in a port number. Just key in 80 next to “What Port?” and click the “Check Your Port” button. It will confirm or deny the port has been successfully forwarded. Also do the same for the second port, 6036. If one or both of these ports were not verified as having been forwarded, then I would need to go back to the 1701HG router’s home page to redo the port forwarding so it is correct.

Now you should be able to key in the outside IP address of your router in the web browser on a remote computer, tablet or smartphone to bring up the split camera view screen from the DVR. 

The “router port forwarding” process may seem complex to a newbie, what with the software adjustments you need to make to the router‘s homepage, but it really isn‘t that bad once you get the hang of it. As a computer repair or "fix my computer" issue, it will grow on you after while. It will be as second nature as brushing your teeth.


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Article Contributed By Douglas.M:

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