[zoky]

It is a work in progress and is far from providing all the features you might expect from a later model 3174, but it does provide basic TN3270 and VT100 emulation.

+ TN3270

+ Extended Data Stream

+ Basic TN3270E

+ Device name (LU) negotiation

o SSL/TLS

I think that last one is a joke but I really don’t know enough about this sort of thing to be sure…

[p_l]

Telnet supports SSL, even if it's rare to see, just like there's an SSL enabled version of FTP.

Both are used by IBM Mainframes (z/OS) and medium scale systems (AS/400)