Opening Ports in a Asus DSL-N55U Router

Your Asus DSL-N55U router has a very basic firewall that helps protect your home network from unwanted Internet activity. The firewall does this by blocking incoming and outgoing connections that are not authorized. Some online games and programs run much smoother if you allow additional connections through the firewall. To do this you create what is called a port forward.

In this guide I will be showing you how to create a port forward on the Asus DSL-N55U router. I will walk you through each of the following steps:

How to setup a static IP address on the device you plan on forwarding these ports to.
How to login to the Asus DSL-N55U router interface.
How to find the port forwarding page in the router's web interface.
How to setup a port forward for the online game or program of your choice.

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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.

Recommended - Our free Static IP Setter will set up a static IP address for you.
Another way to get a permanent IP address is to set up a DHCP reservation.
Or, manually create a static ip address with our Static IP Guides.

This step is important because you want a permanent IP address in your device. If you do not set up a permanent IP address in your device, then when you device reboots it may get a new IP address.

Use a VPN Instead

Have you considered using a VPN instead of forwarding a port? For most users, a VPN is a much simpler and more secure choice than forwarding a port.

We use and recommend NordVPN because not only is it the fastest VPN, it includes a new feature called Meshnet that makes forwarding a port no longer necessary for most applications. With NordVPN Meshnet, you can connect to your devices from anywhere in the world, completely secure, over a highly encrypted VPN tunnel.

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TIP: Write this static IP address down. You need it in Step 4.

Step 2

Now you need to login to your Asus DSL-N55U router. Your router has a web interface, so you will login to it using your web browser. This can be either Chrome, Firefox, Internet Explorer, or Edge. It usually does not matter which browser you choose to use.

Open up your web browser and find the address bar. It should look something 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 Asus DSL-N55U IP Address is: 192.168.1.1

After entering the IP address of your router you can simply press enter. If all goes well you will see the following screen:

You should see a box prompting you for your username and password. If you don't see a logins screen, you need to find out if the router's IP address has been changed. To do that you need to follow the directions on our How To Find Your Router's IP Address page.

The Default Asus DSL-N55U Router Username is: admin
The Default Asus DSL-N55U Router Password is: password

Enter your username and password, and then click the OK button to log in to your Asus DSL-N55U router.

Asus Usernames and Passwords

If your username and password do not work then please visit our Default Asus Router Passwords page.

Try guessing what the login values were changed to. If you need help, use our Find Password App to make this easier.

If you still can't login to your router because you forgot your Asus DSL-N55U router username and password, use our How to Reset a Router Password guide to set your Asus DSL-N55U router back to its factory settings.

Step 3

Now we need to find the port forwarding section in your router. Here's how you do it. Starting from the first page in your router:

First, click the WAN option in the left sidebar.

Next, click the Virtual Server/Port Forwarding link at the top of the page.

Screenshot of Asus DSL-N55U port forward.

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:

Browsing our List of Games

Check out our our List of Games by Genre

See our List of all Applications

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Enter the name of the program into the Service Name box. It doesn't really matter what you put into this box, but something that will remind you why these ports are being forwarded is be a good idea.

Enter the port to forward into both the Port Range and the Local Port boxes.

You need to enter the IP address that you are forwarding ports to in the Local IP box. It's possible for this to be either the IP address of your computer or any other IP address on your network that you want ports forwarded to.

Select the required protocol for these ports from the Protocol dropdown box.

Click the Add button when you are done.

When you're finished, click Apply at the bottom of the screen to save your changes.

Test if Your Ports are Open

Now that you have forwarded ports on the Asus DSL-N55U you should test to see if your ports are forwarded correctly.

To test if your port has been properly forwarded, you can use our Network Utilities tool, which includes a free Open Port Checker. Our Open Port Check tool is the only online port checking tool with Guaranteed Results.