The Cisco DPC3825 router has a basic firewall that helps to protect your home network from unwanted access from the Internet. This firewall blocks incoming connections that you may want unblocked for various reasons. The process of unblocking these ports is called a firewall.
Here in this guide, we walk you through each step in the port forwarding process. We will show you how to:
We think that forwarding a port should be easy. That's why we created Network Utilities. Our software does everything that you need to forward a port.
When you use Network Utilities you get your port forwarded right now!
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.
It is time to login to the Cisco DPC3825. To do this you must open a web browser because the router uses what is called a web interface. It shouldn't matter what browser you decide to use, simply pick your favorite such as: Chrome, Edge, Internet Explorer, or Safari.
After opening the web browser, look for the address bar. This is normally at the top of the page like this:
Do you see the address bar in the image above? It has 192.168.0.1 in it. Simply replace what is in this bar with the IP address of the Cisco DPC3825 router.
(Sometimes the IP address is referred to as the computer's default gateway)
If you have changed the router's IP address in the past, and you don't remember what you changed it to, check out our How To Find Your Router's IP Address guide.
By default the Cisco DPC3825 IP address is set to: 192.168.0.1
After you have finished entering the IP address into the address bar, click the Enter key on your keyboard. You should now be asked for authentication:
You should see a login screen for the Cisco DPC3825 router.
Go ahead and enter the router's username and password into the appropriate boxes, then press Log In.
This is a common place to get stuck. Here are a few ideas to get you logged in:
This third step involves finding the port forwarding section of your router. To do that, let's start on the Status page like this:
From this page, you need to click the Applications & Gaming link at the top of the page in blue.
Under that a new menu appears. Select the option of Port Range Forwarding.
If you are on the page you see above, you are on the correct page.
Time to enter data into your router. We want to show you exactly what to enter, so we need a little more information from you:
(Make sure the IP address above matches the Static IP Address you setup in Step 1)
Below is our router simulator. It shows you exactly what data to enter in order to get your ports forwarded. Currently we are showing the ports for XBox Live. If this is correct, simply fill out the boxes in your router as you see them below.
When you are finished, click the Save Settings button at the bottom of the page.
It is now time to check your work. Did the ports open correctly? To test this we recommend using our Open Port Checker. This is part of our free trial version of the Network Utilities tool. This particular Open port checker is free and guaranteed to work for you because it uses a local application.
If you enjoyed this guide, here are some others you may also like: