I believe that they want you to use the online website and / or the Xfi phone app for that type of access now.
What is the exact make and model number of it ?
O/k that's why that address and my online and app suggestion won't work. That is a customer owned / retail purchased device. Those will only work with a device that is rented from Comcast.
This is the access address;
admin is the username and password is the password.
Oh ok, I've already tried that and the link works, but when I forward a port to a computer in my house, online port forwarding testers say the port is closed. I have tried disabling all firewalls on both the router and the computer itself, and nothing. I even made a rule on that computer to let inbound stuff come in through the specified port. So I have tried just about everything and I have no idea why it isn't working. Thanks.
Oh I didn't realize that I needed to have the server program running in order to properly test the port! If no server program is running that is listening on that port, it won't work, even if the computer is on.
That's correct. Something must actually be actively listening on a port.