File tigervnc-https.firewalld of Package tigervnc.8914

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>VNC over HTTPS</short>
  <description>The xvnc-novnc servers a web-based VNC viewer over HTTPS. Allows accessing VNC using any modern browser. It displays VNC display :1.</description>
  <port protocol="tcp" port="5801"/>
</service>