Re:Why aren’t we using SSH for everything? (2015)
by e12e on Monday April 18, 2016 @10:01AM
(#11519899)
You could wrap TLS around telnetd (bound to localhost, with a TLS terminator in front) pretty trivially. I'm not sure I'd recommend it, but you certainly could. You could then login with openssl s_client.
Integration to the PAM-stack would be a little more complicated, but there are some tools for working with certificates[eg: 1]. I'm not aware of any that is designed to work for console-like login remotely, though.
[1] http://www.ftsafe.com/application/signon/linuxpampkcs11/
Or are they not suitable for that?