Help setting up VPN only for Transmission

Troubleshooting
1

Hi, I have an OpenVPN setup in my dietpi like so:

client
remote 97-1-ch.cg-dialup.net 443
dev tun
proto tcp
auth-user-pass /var/lib/dietpi/dietpi-vpn/settings_ovpn.conf

resolv-retry infinite
redirect-gateway def1
persist-key
persist-tun
nobind
cipher AES-256-CBC
#ncp-disable
auth SHA256
ping 5
ping-exit 60
ping-timer-rem
script-security 2
up /var/lib/dietpi/dietpi-vpn/static_up.sh
route-up /var/lib/dietpi/dietpi-vpn/up.sh
down /var/lib/dietpi/dietpi-vpn/static_down.sh
remote-cert-tls server
route-delay 5
verb 4

I’ve been facing multiple issues which I will describe below and I need to find a way to address them:

  1. As soon as I enable the VPN, I lose access from my PC (which is on another subnet but allowed in the router) to the dietpi (broken pipe);
  2. I only want to use the VPN client to a specific service/user (Transmission), everything else should remain using the normal traffic route as it always was;

How can I setup so? I already searched and tried multiple configs, but those end up never working, specially because I immediately lose access to the pi itself.

Thanks!

2
  1. You need to add this subnet in the allowed networks when the firewall kicks in.
  2. Has been discussed in other topics.
3

But the subnet is already allowed at the router level. Does it need to also be allowed here?

I’m trying the opposite (allow everything by default and túnel only a specific user).

I’ve checked a few guides but I’m struggling, specially with my specific setup, can you help me step by step?

Thanks.

4

Yes, I think so, because the device could have its own rules that prevent access as soon as the VPN is activated.

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