Configuring only torrent traffic to only go through openvpn

Help
1

So far I’ve configured a container to run transmission service and openvpn service:

  containers.downloads = { config = 
    { config, pkgs, ... }:
    {
      services.openvpn.servers = {
        nordvpn = { 
          config = '' config /root/default.ovpn ''; 
          autoStart = true;
        };
      };
      # How do I configure all traffic from this service to go through the vpn above?
      services.transmission.enable = true;
    };

    enableTun = true;
    autoStart = true;
  };

I can’t figure out how to get the transmission traffic to go through the vpn only, if the vpn is down I want transmission to be down as well. I figure there is a way to do this using user permissions and having the transmission service run as a specific user, but I’m not sure where to find an example for that, and my networking configuration skills aren’t polished enough to take anything more than a rough pass.

The fact that it is in a container is not inherently special, but I figured the isolation would make it easier to have the vpn running without forcing other user traffic through it.

2

There may be other ways to do it, but from what I’ve seen Transmission supports a flag to bind it to an IP: https://www.reddit.com/r/linux/comments/27ysg9/help_forcing_transmissiondaemon_over_vpn/ci6ijuv/

3

Thanks for the reply! To follow up I managed to get this working by following a per-user-vpn I found on Github.