Desktop Environment : VNC Client : noVNC2022/04/26

	Install noVNC which is a VNC Client tool to connect to VNC server via Web Browser.
[1]	Install required packages.

root@dlp:~#

apt -y install novnc python3-websockify python3-numpy

[2]	Start VNC Server with a user, refer to here. This example is based on that [ubuntu] user runs VNC server with [5901] port.
[3]	Login as a user who runs VNC and create certificates, and then Start Websockify to proxy [localhost:5901] on port [6080].

ubuntu@dlp:~$

openssl req -x509 -nodes -newkey rsa:3072 -keyout novnc.pem -out novnc.pem -days 3650

You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [AU]:JPJP                          # country code
State or Province Name (full name) [Some-State]:Hiroshima       # state
Locality Name (eg, city) []:Hiroshima                           # city
Organization Name (eg, company) [Internet Widgits Pty Ltd]:GTS  # company
Organizational Unit Name (eg, section) []:Server World          # department
Common Name (e.g. server FQDN or YOUR name) []:dlp.srv.world    # server's FQDN
Email Address []:ubuntu@srv.world                               # admin email

ubuntu@dlp:~$

websockify -D --web=/usr/share/novnc/ --cert=/home/ubuntu/novnc.pem 6080 localhost:5901

WebSocket server settings:
  - Listen on :6080
  - Web server. Web root: /usr/share/novnc
  - SSL/TLS support
  - Backgrounding (daemon)

[4]	Access to the [https://(server's hostname or IP address):6080/vnc.html] from a client computer with web browser, then noVNC form is displayed like follows, Click [Connect] to proceed.

[5]	Password is required. Input VNC password of the user.

[6]	If successfully passed authentication, VNC session starts and it's possible to operate Ubuntu on Web browser.

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