The ASUS RT-AC87U router has a built-in firewall that blocks incoming connections to protect your home network. However, this can sometimes disrupt applications that need specific ports to be open.
Whether you want to improve your online gaming or set up a remote desktop, opening ports in your router is a solution. Not sure how to go about it? Follow our in-depth ASUS RT-AC87U guide below.

What Information is Needed for ASUS RT-AC87U Port Forwarding?
To set up port forwarding for ASUS RT-AC87U, you will need the following details:
- Device IP Address: Identify the IP address of the device (like your PC or console) that needs the ports open.
- Port Number and Protocol: Find out the specific port number your application requires, and if it uses TCP, UDP, or both.
- External Port: Decide if you want to keep the same port number for both inside and outside network access.
- Router Credentials: Have your router login information ready so you can access its settings and make these changes.
How to Enable Port Forwarding on ASUS RT-AC87U in Australia
Here is a step-by-step guide to enable port forwarding on your ASUS RT-AC87U router:
Step #1: Assign a Static IP
First of all, assign a static IP to your device to keep the ports open even after a reboot. This can be done by:
- Setting up a DHCP reservation in your router to get a fixed IP.
- Manually configuring a static IP address on the device itself.
Step #2: Log into Your Router
Next, you have to access your router’s settings:
- Open a web browser like Chrome, Firefox, or Edge.
- Enter your router’s IP address into the URL bar.
- Input your login credentials and click the OK button to sign in.
Step #3: Find the Port Forwarding Section
To create a port forwarding entry, you have to:
- Select WAN from the left sidebar under Advanced Settings.
- Click the Virtual Server / Port Forwarding tab.
- In the Service Name box, enter a name for the new rule.
- Input the port number or range in both the Port Range and Local Port boxes.
- Type the static IP address of the device into the Local IP box.
- Select the protocol type (TCP, UDP, or Both) from the Protocol dropdown menu.
- Click Add to create the entry.
- Press the Apply button to save your changes.
Step #4: Test if the Ports are Open
Finally, verify that the ports are correctly forwarded by:
- Using any port checker tool on the internet like portchecker.co.
- Accessing the service or application from outside your network.
ASUS RT-AC87U Port Forwarding Made Easy!
Setting up port forwarding on your ASUS RT-AC87U is a snap using PureVPN’s Port Forwarding add-on. Skip the complex router settings and open or close ports on any device with ease—it is quick, simple, and stress-free!
How to Port Forward ASUS RT-AC87U with PureVPN

Here is how you can use PureVPN to port forward your ASUS RT-AC87U router in just a few clicks:
- Sign up for PureVPN, add Port Forwarding to your plan, and complete the payment.
- Download and install the PureVPN app, launch it, and log in using your credentials.
- Access the PureVPN Member Area, go to Subscriptions and click Configure next to Port Forwarding.
- Choose Enable specific ports, enter the ports you want to open, and click the Apply Settings button.
- Open the PureVPN app, connect to a port forwarding-supported server, and you are good to go!
Why is ASUS RT-AC87U Port Forwarding Not Working?
If port forwarding is not working on your ASUS RT-AC87U, here is what you should look into:
- Incorrect Device IP: Double-check that the IP address you have entered for port forwarding matches the device you are trying to connect to.
- Firewall Issues: Your computer’s firewall might be blocking the ports you need. Make sure your firewall settings allow traffic on those ports, both incoming and outgoing.
- ISP Blocking: Sometimes ISPs block certain ports for security reasons. Call your ISP to make sure the ports you are trying to use are not restricted.
- Outdated Firmware: Outdated firmware can cause problems with port forwarding. Keep your RT-AC87U updated with the latest firmware version.
Frequently Asked Questions
The default username and password for ASUS RT-AC87U routers is “admin” unless you have changed them.
If you want to set up port forwarding on your ASUS RT-AC87U , go to WAN > Virtual Server / Port Forwarding in the router settings.