/usr/lib/firewalld/services/ Current File: //usr/lib/firewalld/services/kpasswd.xml

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>Kpasswd</short>
  <description>Kerberos password (Kpasswd) server</description>
  <port protocol="tcp" port="464"/>
  <port protocol="udp" port="464"/>
</service>