Dlink DSL-6740U 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:
- Setup a static IP address on either your computer or device that you want to forward a port to.
- Login to your D-Link DSL-6740U router.
- Navigate to the port forwarding section.
- Click the Advanced link.
- Click on Port Forwarding.
- Click the Add button.
- Create a port forward entry.
While these steps might seem difficult at first, we will walk you through each step for your Dlink DSL-6740U router.
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.
Now we are going to login to your Dlink DSL-6740U 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:
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 D-Link DSL-6740U 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.
- The Default D-Link DSL-6740U Router Username is: admin
- The Default D-Link DSL-6740U Router Password is: admin
Enter your username and password, and then click the Login button to log in to your Dlink DSL-6740U router.
Dlink Usernames and Passwords
If your username and password do not work then please visit our Default D-Link Router Passwords page.
If you still can't login to your router because you forgot your Dlink DSL-6740U router username and password, use our How to Reset a Router Password guide to set your Dlink DSL-6740U router back to its factory settings.
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:
Click the Advanced link near the top of the page.
The menu on the left should change. In this new menu, click Port Forwarding.
Click the Add button near the bottom of the page.
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:
Make sure that the Custom Server radio button is selected.
Enter the name of the program into the Custom Server 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.
Pick Allow All from the Inbound Filter dropdown box.
Enter the IP address of the device that you want to forward ports to into the Server IP Address box. This can be either the IP address of your computer or the IP address of another device on your network.
If you are forwarding a single port, enter that port number into the External Port Start, External Port End, Internal Port Start and Internal Port End boxes. If you are forwarding a range of ports, enter the lowest number of the range into the External Port Start and Internal Port Start boxes. Then enter the highest number of the range into the External Port End and Internal Port End boxes.
Select the protocol type of the ports you are forwarding from the Protocol box.
When you are done click the Apply button.
Your ports should now be open. It is time to test them.
Test if Your Ports are Open
Now that you have forwarded ports on the Dlink DSL-6740U 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.
Dlink DSL-6740U Router Screenshots
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