Alex Regan writes:
I'm familiar with how remote ssh tunnels work, but can't
quite get
systemctl to create a proper service, presumably because ssh
expects to be tied to a terminal.
I did this a looooong time ago, so visualize me waving my hands
frantically. You presumably want the "-n" flag (detaches from stdin),
or possibly the "-f" flag (implies "-n" but allows prompting for a
passphrase, but that doesn't seem to be appropriate for a service).
The man page is pretty good, and has a discussion of using the tun(4)
network pseudo-device.
Regards,