Arris TM501b 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 Arris TM501b router.
- Navigate to the port forwarding section.
- Click the General Setup button.
- Click the NAT link.
- Click on Virtual Server or Port Forwarding.
- Create a port forward entry.
While these steps might seem difficult at first, we will walk you through each step for your Arris TM501b 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 Arris TM501b 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 Arris TM501b IP Address is: 192.168.2.1
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 Arris TM501b Router Username is: admin
- The Default Arris TM501b Router Password is: 1234
Enter your username and password, and then click the Login button to log in to your Arris TM501b router.
Arris Usernames and Passwords
If your username and password do not work then please visit our Default Arris Router Passwords page.
If you still can't login to your router because you forgot your Arris TM501b router username and password, use our How to Reset a Router Password guide to set your Arris TM501b 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 General Setup button near the left of the page.
Click the NAT link near the left of the page.
You should now see a new menu. In this new menu, click Virtual Server or Port Forwarding.
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:
Forwarding a Single Port
Enable the Enable Virtual Server checkbox by putting a check in it.
Enter the IP address that you want to forward these ports to into the Private IP box. Note that if you are forwarding ports so you can run a program on a device other than your computer then you can enter your device's IP address into that box instead.
Enter the same port number to be forwarded into the Private Port and the Public Port boxes.
In the Type box select the protocol that you want to forward these ports over.
Enter the name of the program into the Comment 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.
When you are finished, click the Add button.
Most people will never need to use this, but I'm going to explain why they have Private Port and Public Port here.
The Private Port and Public Port entries are actually rather useful. They are there so you can direct traffic at two devices on your network.
Let's say that you have two devices running Ftp servers on your network. Let's call these devices device one(192.168.2.1) and device two(192.168.2.1).
Let's also say both these ftp servers are running on port 21. Okay we setup your router to forward port 21 to device one(192.168.2.1:21).
So every external IP address request from ftp goes to device one. How do we get to the second device? Well the Private Port and Public Port entries allow us to specify another outside port to connect to our internal port 21. Lets make the additional port, port 30. We would now setup a rule in the router with the Public Port set to 30 and the Private port set to 21. The IP address in that rule would be 192.168.2.1. So when you wanted to ftp to device two you would specify port 30 in your ftp client.
The router would see these requests coming in on port 30 and forward them to (192.168.2.1:21). This would allow you to ftp to both devices.
Forwarding a Port Range
Verify that you have the Enable Port Forwarding checkbox checked.
Enter the IP address to forward these ports to into the Private IP box. If you are forwarding ports so you can run a program on a device other than your computer then you can enter your device's IP address into that box.
The protocol that you want to forward is selected from the Type box.
If you are just forwarding a single port number then you can simply enter that same number into both the Left Port Range and the Right Port Range boxes. If you are forwarding a range of ports, usually separated by a hyphen, then you need to enter the lowest number of that range into the Left Port Range box and then enter highest number into the Right Port Range box.
Put a name for this forward in the Comment box so that you can remember why you set this forward up. The name does not matter so pick something that has meaning to you.
Click the Add button when you are finished.
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 Arris TM501b 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.
Arris TM501b Router Screenshots
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