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

<?xml version="1.0" encoding="utf-8"?>
<service>
  <short>Syncthing</short>
  <description>Syncthing is a peer-to-peer file synchronization service. Enable this option, if you plan to run the Syncthing service.</description>
  <port protocol="tcp" port="22000"/>
  <port protocol="udp" port="22000"/>
  <port protocol="udp" port="21027"/>
</service>