Port Forwarding on a Netcomm 3G Broadband Router 3G15Wn

This guide will walk you through the steps of port forwarding on the Netcomm 3G Broadband router 3G15Wn (Firmware L411-402NVM-C01_R10).

Step 1: Open up your favorite browser and go to the router’s default gateway address.

  • (Default Address)

Step 2: Login to the router.

  • Default Username: admin
  • Default password: admin

Step 3: Once you have logged into your router go to the “Advanced” tab hover over “NAT” then click “Port Forwarding.”

Port forwarding on a Netcomm Router

Step 4: Click on “Add” at the bottom of the page.

Step 5: Be sure to select the radio button “Custom Service” and choose a name for the service (small description eg. web, camera, xbox, etc..). “Server IP Address” is the Internal IP address that you want the port to be open on. Be sure you have “Protocol” set to “TCP/UDP” and “External Port” is the port you wish to open, “Internal Port” is the port leading to the machine on your home network. Click “Apply/Save.”

Port Forwarding on a Netcomm 3G Broadband Router 3G15Wn Image 2

Once you save the settings you should now be able to test your port at www.portchecktool.com. Please keep in mind your ISP (Internet Service Provider) can be blocking certain ports such as port 8025 and 21. You can call and ask if they are. If you are still not able to see the ports, check your firewall and antivirus software on your computer.

Here is an example. You have a webcam that has the IP address and it runs on port 80. You want to be able to access this camera from outside your network on port 8080. You would enter the below values into the port forwarding page.

  • Custom Service = Small Description
  • Server IP Address =
  • Protocol = TCP/UDP
  • External Port = 8080
  • Internal Port = 80

Then to view the camera you would use your No-IP hostname of “somehost.no-ip.com” like this: http://somehost.no-ip.com:8080 to reach the webcam.