Fastest Scientific Atlanta DPC3941T Router Open Port Guide

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Port Forward Staff
September 04, 2017 (Last Updated: ) | Reading Time: 4 minutes

The Scientific Atlanta Xfinity DPC3941T router has a firewall that helps protect your home network from unwanted Internet activity. The firewall works by blocking all incoming and outgoing connections that are not authorized by your router. Some online gaming or programs work much smoother if additional connections are opened. To do this you need to create what is typically called a port forward.

In this guide I will walk you step-by-step through the port forwarding process on the Scientific Atlanta Xfinity DPC3941T router. I will show you how to:

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Step 1

It is important to setup a static ip address in the device that you are forwarding a port to. This ensures that your ports will remain open even after your device reboots.

After setting up a static ip address on your devices you need to login to your router.

TIP: I recommend writing down the static IP address you just created. You need this address in Step 4.

Step 2

In order to login to the Scientific Atlanta Xfinity DPC3941T router interface you need to open a web browser. It typically doesn't matter what browser you decide to use, I recommend picking the one you are most comfortable with such as Chrome, Internet Explorer or Firefox.

Once you have opened the web browser, find the address bar. If you don't know what this is, it is located at the top of the page like this:

Image of a browser address bar
Browser address bar

Above is an example of what a web browser address bar looks like. Find the address bar in your router and type in your router's IP address.

The default Scientific Atlanta DPC3941T IP Address is: 10.0.0.1

After you enter the router's IP address, click the Enter key. This should give you a login page like this:

Scientific Atlanta DPC3941T Login
Screenshot of Scientific Atlanta DPC3941T Login.

If a login screen did not appear after you entered the router's IP address in the address bar, you need to find out what the router's IP address has been changed to. I recommend following the directions on the How To Find Your Router's IP Address page.

Go ahead and enter the router's login username and password.

Click the LOGIN button to access your router's web interface.

Having Trouble?

This is a pretty common place to get stuck. If you find yourself here, don't panic, there are a few things you can try:

  • First, check all the different Scientific Atlanta default combinations. Here is our list of all known Default Scientific Atlanta Router Passwords.
  • Second, try and guess what the password/username was changed to. Use our Find Password App to make this step easier.
  • Finally, if you still are stuck after trying both of the above options, it may be time to consider a factory reset. Learn more about this option on the How to Reset a Router page.

Step 3

It is now time to find the port forwarding section of the router. To help you with this step, we begin on the At a Glance page.

Scientific Atlanta DPC3941T At a Glance
Screenshot of Scientific Atlanta DPC3941T At a Glance.
Scientific Atlanta DPC3941T Port Forwarding
Screenshot of Scientific Atlanta DPC3941T Port Forwarding.
Scientific Atlanta DPC3941T Port Forwarding Edit Service
Screenshot of Scientific Atlanta DPC3941T Port Forwarding Edit Service.

Step 4

Here are the ports to forward for Xbox Live:

  • TCP Ports: 3074
  • UDP Ports: 3074

If you are looking for the ports for a different application you can find it by either:

From the Common Service dropdown box select Other.

Make up a name to put in the Service Name box. The name does not have any effect on the functionality of the forward, it's simply there so you can know why it was created.

Select the protocol type of the ports you are forwarding from the Service Type box.

Enter the IP address to forward these ports to into the Server IPv4 Address box. If you are forwarding ports so you can run a program on a device other than your computer then you can enter your device's IP address into that box.

If you are just forwarding a single port number then you can simply enter that same number into both the Start Port and the End Port boxes. If you are forwarding a range of ports, usually separated by a hyphen, then you need to enter the lowest number of that range into the Start Port box and then enter highest number into the End Port box.

After you are done click the SAVE button.

Don't forget to click SAVE after each entry.

Test Your Ports

Are your the ports you just forwarded really open? An easy way to find out is use our free Open Port Checker. It uses a local application to see if the ports are open or not. This guarantees our port checkers accuracy.

More Info...

Check out our other guides here. We have a growing list of free gaming, networking, and software guides here at portforward.com.

Our other site setuprouter.com can help you setup a secure home network with your exact router.

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