url: rlogin/telnet/tn3270
4.6 rlogin, telnet and tn3270
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These URL schemes are defined in RFC 1738, and are used for logging in
via a terminal emulator. They have the form
telnet://USER:PASSWORD@HOST:PORT
but the PASSWORD component is ignored. By default, the ‘telnet’ scheme
is handled via Tramp (Tramp).
To handle rlogin, telnet and tn3270 URLs, a ‘rlogin’, ‘telnet’ or
‘tn3270’ (the program names and arguments are hardcoded) session is run
in a ‘terminal-emulator’ buffer. Well-known ports are used if the URL
does not specify a port.