.
FWIW, there are times where telnet is the only viable option. We have an
internal
system running a real old version of Unix used for X.400/X.25
communication for which ssh is not an option.
But that would be the unix server running telnet and not the Linux system
as in this case....
There's very few, if any, reasons for a Linux server today to be running a
telnet server instead of our alongside ssh...