# sshguard.service -- sample systemd unit file [Unit] Description=Intelligently block brute-force attacks by aggregating system logs After=syslog.target After=iptables.target After=ip6tables.target After=libvirtd.service After=firewalld.service After=network.target [Service] ExecStartPre=-/usr/sbin/iptables -N sshguard ExecStart=/usr/sbin/sshguard Restart=always [Install] WantedBy=multi-user.target