How to Use ASUS VPN Fusion: Assign Devices and Multiple VPNs

Open VPN Fusion

1. Connect your computer or phone to your ASUS FlashRouter’s WiFi or LAN.
2. Open http://www.asusrouter.com or the router’s LAN IP (often 192.168.50.1) and log in. See How to Access Your AsusWRT FlashRouter Settings.
3. Go to VPN > VPN Fusion. Add and configure at least one working VPN client profile before assigning devices.

Method 1: Apply One VPN to All Devices

Use this option when you want the selected VPN profile to be your router’s default connection.

1. In VPN Fusion, open the VPN profile that should provide the default internet route.
2. Enable Apply to all devices (or Default Connection in firmware that uses that label).
3. Click Apply all settings, then enable the VPN profile.
4. Connect a test device to the router and check its IP. If you use per-device overrides, verify those rules separately.

Method 2: Send Only Selected Devices Through a VPN

1. In VPN Fusion, turn off Apply to all devices for a profile when you do not want that VPN used network-wide.
2. Open the profile’s Device area using the pencil/edit icon or the firmware’s device-assignment control.
3. Select the intended devices (for example, a TV and streaming box), confirm with OK, then click Apply all settings.
4. Enable the VPN profile and verify the selected devices’ public IPs.
5. For devices that should use the normal ISP internet, leave them on the Internet Connection route or explicitly set the Internet/bypass rule available in your firmware. Remove any conflicting VPN assignments.

Important: A device being connected to ASUS WiFi does not guarantee that it is assigned to the desired VPN. Check the assigned profile and the actual public IP.

How Multiple VPN Connections Work

On supported models, VPN Fusion can keep several VPN connections active and route different devices through different providers at the same time. For example:

You may be able to run one WireGuard profile and multiple OpenVPN profiles concurrently, but connection limits and supported combinations vary by ASUS router model and firmware. Adding many saved OpenVPN profiles is not the same as having all of them connected at once.

1. Create separate profiles with clear names, such as Nord-US-WG, Proton-US-OVPN, and Surfshark-UK-OVPN.
2. Enable only the profiles you need and confirm each shows connected.
3. Assign each client device to the appropriate active profile; avoid applying conflicting default routes.
4. Verify each device’s observed IP and server country. If one tunnel fails, test it individually with the other profiles temporarily disabled.

ASUS reference: How VPN Fusion handles multiple tunnels and devices.

Confirm a Device Is Actually Using the VPN

1. In VPN Fusion, confirm the target profile’s connection status is active.
2. Check the device’s assignment in the ASUS VPN Fusion interface.
3. On that same device, visit IPLeak.net or another public-IP checker.
4. Compare the reported public IP and location with the VPN server assigned to that device.
5. If the device still shows your ISP IP, test with its own VPN app and iCloud Private Relay / Private DNS / browser proxy disabled. Use Device Settings That Can Interfere With Your Router VPN.

Quick isolation test

1. Turn off VPN Fusion routing for a test device and confirm ISP internet works.
2. Turn on just one known-working VPN profile for that device.
3. Recheck public IP. If it now works, reintroduce other profiles/assignments individually.

Want a Separate WiFi Network With or Without VPN?

Rather than selecting devices one at a time, supported ASUS routers offer Guest Network Pro or Network > VPN Network features that can associate a WiFi SSID with VPN routing. See ASUS Guest WiFi With or Without VPN: Setup Guide.

On routers with only the traditional Guest Network feature, available VPN-by-SSID behavior may differ; do not assume the standard guest SSID bypasses a network-wide VPN default.