I recently ran into an issue with a VPS where the SSH service crashed, leaving me unable to connect to the machine. The other services were up and running; only the SSH service died. I managed to resolve the situation with a reboot from the VPS control panel, but the incident got me thinking: Assuming: I don't have physical access to the machine I have no server control panel access or means of rebooting the server All other system services are still functioning Then how could I recover from the SSH service dying?