On Wed, 6 Sep 2017, Christian Groessler wrote:
Also, "netstat -tuna | grep :23" doesn't show an open
port at 23. So I think
no one is listening on the telnet (23) port.
The telnet daemon in.telnetd is traditionally started when required by
xinetd, but it seems systemd has taken that role over in recent Fedora
versions, so you probably need to check the systemd is doing sensible
things. Incidentally, Fedora 24 is now End Of Life, so you should think
about upgrading.
Michael Young