[Unit] Description=Modem Manager [Service] Type=dbus BusName=org.freedesktop.ModemManager1 ExecStart=/usr/sbin/ModemManager --filter-policy=strict StandardError=null Restart=on-abort CapabilityBoundingSet=CAP_SYS_ADMIN ProtectSystem=true ProtectHome=true PrivateTmp=true RestrictAddressFamilies=AF_NETLINK AF_UNIX NoNewPrivileges=true User=root [Install] WantedBy=multi-user.target Alias=dbus-org.freedesktop.ModemManager1.service