/lib/firewalld/services/ Current File: //lib/firewalld/services/mountd.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>mountd</short>
  <description>NFS Mount Lock Daemon</description>
  <port protocol="tcp" port="20048"/>
  <port protocol="udp" port="20048"/>
</service>