[Unit]
Description=AutoSSH tunnel service Plex on local port 32400
After=network.target

[Service]
Environment="AUTOSSH_GATETIME=0"

ExecStart=/usr/bin/autossh -M 40584 -o "compression=no" -o "cipher=aes128-gcm@openssh.com" -o "ServerAliveInterval 30" -o "ServerAliveCountMax 3" -NR 32400:localhost:32400 root@TUNNELIP
User=root
[Install]
WantedBy=multi-user.target