OpenVPN
| Distribution |
Package |
| Arch Linux |
openvpn networkmanager-openvpn |
| Ubuntu |
openvpn |
| Fedora |
openvpn NetworkManager-openvpn |
Connect with factor authentication and start as a dameon:
sudo openvpn --config /path/to/client.ovpn \
--auth-user-pass --auth-retry interact \
--daemon