Gigabyte GN-B40 Router Open Port Guide

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Port Forward Staff
September 19, 2018 (Last Updated: ) | Reading Time: 3 minutes

Gigabyte GN-B40 routers include a very basic firewall that helps protect your home network form unwanted access from the internet. Since this firewall blocks incoming connections you may need open a port through it for certain games and applications. This process of opening a port is frequently called a port forward, since you are forwarding a port from the internet to your home network.

The basic process to open a port is:

  1. Setup a static IP address on either your computer or device that you want to forward a port to.
  2. Login to your Gigabyte GN-B40 router.
  3. Navigate to the port forwarding section.
    • Click the Forwarding Rules link.
    • Click the Virtual Server link.
  4. Create a port forward entry.

While these steps might seem difficult at first, we will walk you through each step for your Gigabyte GN-B40 router.

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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.

Step 2

Now we are going to login to your Gigabyte GN-B40 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 Gigabyte GN-B40 IP Address is: 192.168.123.254

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

Gigabyte GN-B40
Screenshot of Gigabyte GN-B40.

You should see a box prompting you for your username and password.

Enter your username and password, and then click the Login button to log in to your Gigabyte GN-B40 router.

Gigabyte Usernames and Passwords

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

If you still can't login to your router because you forgot your Gigabyte GN-B40 router username and password, use our How to Reset a Router Password guide to set your Gigabyte GN-B40 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:

Gigabyte GN-B40
Screenshot of Gigabyte GN-B40.

Click the Forwarding Rules link near the left of the page.

Click the Virtual Server link.

Gigabyte GN-B40
Screenshot of Gigabyte GN-B40.

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:

Enter the port to forward into the Service Ports box.

Enter the IP address that you want to forward these ports to in the Server IP box. You can enter either the IP address of your computer or the IP address of another computer or device on your network.

In the Enable checkbox put a checkmark.

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

Test if Your Ports are Open

Now that you have forwarded ports on the Gigabyte GN-B40 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.

Gigabyte GN-B40 Router Screenshots

We also have the Internets largest collection of Router Screenshots.

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