Current File : //usr/lib/firewalld/services/vnc-server.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>Virtual Network Computing Server (VNC)</short>
  <description>A VNC server provides an external accessible X session. Enable this option if you plan to provide a VNC server with direct access. The access will be possible for displays :0 to :3. If you plan to provide access with SSH, do not open this option and use the via option of the VNC viewer.</description>
  <port protocol="tcp" port="5900-5903"/>
</service>