[Unit] Description=<<> telnet server After=local-fs.target [Service] User=telme10 Group=telme10 Type=simple ExecStart=/usr/local/bin/telme10 [::]:23 AmbientCapabilities=CAP_NET_BIND_SERVICE PrivateTmp=yes PrivateDevices=yes ProtectSystem=full ProtectHome=yes [Install] WantedBy=multi-user.target