Current File : //lib/firewalld/services/telnet.xml
<?xml version="1.0" encoding="utf-8"?>
<service>
<short>Telnet</short>
<description>Telnet is a protocol for logging into remote machines. It is unencrypted, and provides little security from network snooping attacks. Enabling telnet is not recommended. You need the telnet-server package installed for this option to be useful.</description>
<port port="23" protocol="tcp"/>
</service>