Asus RT-AC66U Port Forwarding Instructions

This page will show you how to setup a port forward on the Asus RT-AC66U router.

If you are not sure what port forwarding is you can read our What is Port Forwarding guide to help get started.

Other Asus RT-AC66U Guides

Configure your Computer to Have a Static IP Address

Port forwarding the Asus RT-AC66U to your computer can be more reliable if you first configure a static IP address on your computer. We have instructions to setup a static IP address for Windows 7, Windows 8, and a variety of other devices on our Static IP Address Settings page.

Please note that while setting up a static IP address on your computer is optional, it is still a very good idea to go ahead and do it. In the long run it will make your port forward much more reliable.

Login To The Asus RT-AC66U

To get started forwarding a port you need to login to your Asus RT-AC66U router. If you are already logged in you can skip this step.

To login to the Asus RT-AC66U, follow our Asus RT-AC66U Login Guide.

Forward a Port on the Asus RT-AC66U router

Find The Port Forwarding Section of the Asus RT-AC66U

Now that you have logged into the Asus RT-AC66U you places you on the Network Map. On the left under the heading of Advanced Settings click the WAN link. On this new page at the top are some tabs, pick the one labeled Virtual Server/Port Forwarding.

Configure the Port Forwarding section of your Asus RT-AC66U

Now to forward a port, make the following changes:

You are now directed to a different page. Toward the bottom is the heading labeled Port Forwarding List. This is where your changes will be made. First is the Service Name. Enter the name of the program here. It is not really important what you type here as long as it is something that reminds you why you forwarded these ports.

The next box is called Port Range. Enter the port range that you are forwarding here. If it is more than one port then enter it with the lowest number to the left with a dash then the highest number, such as 22-25.

Next is the Local IP. Enter the IP Address that you are forwarding these ports to. For example if you are using these ports to run a program on your computer, then use that computer's IP Address.

In the Local Port box do the same thing you did with Port Range. Enter the range of ports you are forwarding here separated by a dash. Lowest number, dash, highest number.

Protocol is next, use this drop down menu to choose the type of protocol you want to use.

When you have finished, click the Add button to the right, then down below click Apply.

Test if Your Ports are Open

Now that you have forwarded ports on the Asus RT-AC66U you should test to see if your ports are forwarded correctly.

To test if your ports are forwarded you should use our Open Port Check tool.

Other Asus RT-AC66U Info

Don't forget about our other Asus RT-AC66U info that you might be interested in.

Rachel Bauer

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Rachel Bauer is an owner and primary author for She is available on Google+ and you can find more of her articles in the Networking section of our site.