Simple Netopia Cayman3346 Router Port Forwarding

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Port Forward Staff
September 19, 2018 (Last Updated: ) | Reading Time: 4 minutes

Netopia Cayman3346 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 Netopia Cayman3346 router.
  3. Navigate to the port forwarding section.
    • Click the Expert Mode link.
    • Click the Yes~~ button.
    • Click on Configure.
    • Click on NAT.
    • Click the Define Custom Service button.
    • Click the Port Forwarding: Range of Ports radio button.
    • Click the Next button.
  4. Create a port forward entry.

While these steps might seem difficult at first, we will walk you through each step for your Netopia Cayman3346 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 Netopia Cayman3346 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 Netopia Cayman3346 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:

Netopia Cayman3346
Screenshot of Netopia Cayman3346.

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 Netopia Cayman3346 router.

Netopia Usernames and Passwords

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

If you still can't login to your router because you forgot your Netopia Cayman3346 router username and password, use our How to Reset a Router Password guide to set your Netopia Cayman3346 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:

Netopia Cayman3346
Screenshot of Netopia Cayman3346.

Click the Expert Mode link near the left of the page.

Netopia Cayman3346
Screenshot of Netopia Cayman3346.

Click the Yes, enter expert mode button near the center of the page.

The menu on the left should change. In this new menu, click Configure.

You should now see a new menu. In this new menu, click NAT.

Netopia Cayman3346
Screenshot of Netopia Cayman3346.

Click the Define Custom Service button near the center of the page.

Netopia Cayman3346
Screenshot of Netopia Cayman3346.

Put a dot into the Port Forwarding: Range of Ports radio button.

Click the Next button.

Netopia Cayman3346 port forward
Screenshot of Netopia Cayman3346 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:

Make up a name to put in the Service Name box. The name does not have any effect on the functionality of the forward, it's simply there so you can know why it was created.

If you are only forwarding a single port number then enter that number into both the Base Host Port, Left Global Port Range and the Right Global Port Range boxes. If you are forwarding a range of ports separated by a hyphen then enter the lowest number of that range into the Base Host Port, Left Global Port Range box and the highest number of that range into the Right Global Port Range box.

Choose the protocol that you are forwarding from the Protocol radio button.

In this router if you need both TCP and UDP forwarded then you need to create a duplicate configuration. One of the configurations has TCP selected and the other one has UDP selected.

After you are done click the Next button.

Netopia Cayman3346
Screenshot of Netopia Cayman3346.

Select the service you created from the Service Name drop down box.

Click the Enable 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 Netopia Cayman3346 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.

Netopia Cayman3346 Router Screenshots

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