[Unit]
Description=OpenBSD Secure Shell server
After=network.target

[Service]
ExecStartPre=-/usr/lib/systemd/scripts/sshd_checker.sh
ExecStartPre=/usr/bin/ssh-keygen -A
ExecStart=/usr/bin/sshd -D
ExecReload=/bin/kill -HUP $MAINPID
KillMode=process
Restart=always
TimeoutStartSec=0
Slice=sshd.slice

[Install]
WantedBy=multi-user.target

[X-Synology]
Name=SSH service
DefaultEnable=no
FirewallSections=ssh