/usr/lib/firewalld/services/ Current File: //usr/lib/firewalld/services/xmpp-local.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>XMPP Link-Local Messaging</short>
  <description>Serverless XMPP-like communication over local networks based on zero-configuration networking.</description>
  <port protocol="tcp" port="5298"/>
</service>