On 14/07/2024 02:54, Lyndon Nerenberg
(VE7TFX/VE6BBM) wrote:
Everyone seems to be confusing TELNET with LOGIN. You all need to
go back and read the RFC, which says in its introduction:
The purpose of the TELNET Protocol is to provide a fairly general,
bi-directional, eight-bit byte oriented communications facility. Its
primary goal is to allow a standard method of interfacing terminal
devices and terminal-oriented processes to each other. It is
envisioned that the protocol may also be used for terminal-terminal
communication ("linking") and process-process communication
(distributed computation).
The term 'login' doesn't appear anywhere in that document.
Absolutely. Are there any network engineers around? Telnet is used to connect to any port as listed in https://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers and used extensively by network engineers to test out firewall rules and devices and debug networks.
Telnet on port 23 is one thing but as many have already said in this (long) thread, it can be used with other ports to debug network services.
Admittedly one could use OpenSSL and Netcat but Telnet's probably more widespread by default?
Kindest regards,
Olivier
