How to route traffic on device though Proton VPN with Port Forward

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Alvaro Gandara Astray

• September 16, 2024 15:47

Hi!

I'm trying to route all traffic from a device in my LAN through Proton VPN, but I can't seem to figure out how to obtain the port info on the VPN connection. It looks like Proton VPN can easily give you this info through their official apps, but I would love to do this within Firewalla via the Wireguard configuration files...

Any idea how to obtain the open port that Proton VPN offers via their port forwarding option?

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  Firewalla

  • September 16, 2024 16:02

  Do you mean, you want VPN to port forward (from your VPN IP) to your local device port? And you can't obtain the VPN dst port? if it is, then you will have to work with your VPN service on it, there is no way firewalla know that port. 

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  Alvaro Gandara Astray

  • September 16, 2024 22:41

  Yeah, when you put it like that it does sound weird. Proton VPN had some convoluted instructions on how to obtain the port number via natpmpc https://protonvpn.com/support/port-forwarding-manual-setup#linux
  I was trying to see if I could do something similar within Firewalla.
  In the end I gave up and just used AirVPN, which allows you to choose a static port within the WireGuard VPN connection.

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  Romualdo Zwolinski

  • November 17, 2025 23:11

  There is a guide on port fowarding with ProtonVPN and OpenWRT here: https://forum.openwrt.org/t/guide-port-forwarding-with-protonvpn-and-openwrt/238374 

  It would be excellent if this could be implemented with Firewalla in a fashion that doesn't require as much technical skill for the end user.

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