Dlink DSL-2640U 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 D-Link ADSL2/2+ Modem with Wireless Router (DSL-2640U) is a 3-in-1 device that combines the function of a high-speed DSL modem, wireless G access point, and 4-port Ethernet router.
- Login with the modem Dlink DSL-2640U with the following default ip address (192.168.1.1), username and password.
- D-Link DSL-2640T - wireless router - DSL modem - 802.11b/g - desktop overview and full product specs on CNET.
- D-Link DSL-2640U User Manual. Page 46 Lower integer values for precedence imply higher priority for this queue relative to others. Step 2 Add a QoS queue entry and assign it to a specific network interface (PVC 0/0/35), and set integer values for queue precedence to 1. See the following figure: D-Link DSL-2640U User Manual.
The basic process to open a port is:
D-Link DSL-2640U User Manual 16 Appendix A – Troubleshooting Configuration This section will show you how to configure your new D-Link Router using the web-based configuration utility. Web-based Configuration Utility Connect to the Router The default IP address for ADSL MODEM is: 192.168.1.1; The Subnet Mask is：255.255.255.0.
- 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-2640U router.
- Navigate to the port forwarding section.
- Click the Advanced button.
- Click on Virutal Server.
- 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-2640U router.
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!
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 program will setup a static IP address for you.
- → Download Network Utilities today!
- Or follow our Static IP Address guides to setup a static IP address.
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 Dlink DSL-2640U 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:
Keith richards. In the picture above the address bar has 192.168.1.1 in it. Just replace all of that with the IP address of your Dlink DSL-2640U router.Your router's IP address can also be refered to as your computer's default gateway.
By default the IP address is set to: 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-2640U Router Username is: admin
- The Default D-Link DSL-2640U Router Password is: admin
Enter your username and password, and then click the Login button to log in to your Dlink DSL-2640U 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-2640U router username and password, use our How to Reset a Router Password guide to set your Dlink DSL-2640U 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:
Click the Advanced button near the top of the page.
The menu on the left should change. In this new menu, click Virutal Server.
Click the Add button near the center of the page.
Step 4
Update Modem D-link 2640u
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
Put a dot into the Custom Server radio button.
Create a name for this forward and put it in the Custom Server box. The name is only used as a reminder and has no effect on the port forward.
Enter the IP address that you are forwarding ports to in the Server IP Address box. This is either the IP address of a computer or the IP address of another device on your network.
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. 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.
The protocol that you want to forward is selected from the Protocol box.
When you're finished, click Apply near the bottom of the screen to save your changes.
Test if Your Ports are Open
Now that you have forwarded ports on the Dlink DSL-2640U 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-2640U Router Screenshots
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