Sharing Your Ubuntu Desktop Using VNC Server on 20.04

When trying to set up a VNC server for remote access, it's expected that you will receive a warning about not using a password for the connection. To begin with, you need to launch x11vnc without administrator privileges.

To start using x11vnc, simply invoke the program in the terminal without any options. However, if you're using ufw, the default firewall in Ubuntu, you'll need to allow incoming connections on port 5900 by running the command `sudo ufw allow 5900/tcp`. Additionally, you may need to configure an allow rule for this port in your router and set up IP forwarding to your machine's IP address.

When using firewalld, you can add a rule to allow incoming VNC connections by running the command `sudo firewall-cmd -add-service=vnc-server`. You don't need to specify the port directly, as the service name is associated with the default port.

To share your desktop session using the VNC protocol, you'll need to set up your firewall to allow incoming connections on port 5900. Once installed, you can launch x11vnc straight from the terminal or via GUI using a desktop launcher found in the Applications menu.

X11vnc is available for installation through various package managers, including pacman (Archlinux), apt-get (Debian-based distributions), and dnf (Fedora).

The x11vnc application allows you to completely control another machine, sharing even keyboard or mouse events. While SSH is a vital tool for system administrators, it's not the best option when trying to share an entire desktop session. The VNC protocol is more suitable for this purpose.

* Launch x11vnc without administrator privileges

* Allow incoming connections on port 5900 using ufw or firewalld

* Install x11vnc using a package manager (pacman, apt-get, or dnf)

* Configure your firewall to allow incoming VNC connections

By following these steps, you can successfully set up a VNC server on Ubuntu 20.04 and remotely access your desktop session.

Ubuntu desktop vnc server 20.04