autossh-tunnel.service.template

[Unit]
Description=AutoSSH tunnel service on remote port ${SSH_TUNNEL_REMOTE_PORT} 
After=network.target

[Service]
Environment="AUTOSSH_GATETIME=0"
ExecStart=/usr/bin/autossh -M 0 -o "ServerAliveInterval 90" -o "ServerAliveCountMax 3" -NR ${SSH_TUNNEL_REMOTE_PORT}:localhost:22 ${SSH_TUNNEL_CONNECTION}

[Install]
WantedBy=multi-user.target