1、安裝 X11VNC
apt install x11vnc -y
2、配置訪問密碼：輸兩次
x11vnc -storepasswd /etc/x11vnc.pass
3、創建服務
vim /lib/systemd/system/x11vnc.service
粘貼如下內容：
[Unit] Description=Start x11vnc at startup. After=multi-user.target
[Service] Type=simple ExecStart=/usr/bin/x11vnc -auth guess -forever -loop -noxdamage -repeat -rfbauth /etc/x11vnc.pass -rfbport 5900 -shared
[Install] WantedBy=multi-user.target
保存退出
4、修改防火墻配置，配置和啟動服務
ufw allow 5900
systemctl enable x11vnc.service
systemctl daemon-reload