I need to compress telnet traffic. It’s because the link is a slow AX.25 1200 baud radio link. SSH it not an option, it's against the regulations. Anyway, compression of telnet it is.

I figured out I need to use nc (netcat) and probably named pipes (or at least one).

I guess have to use nc like this on the “server side”:

and

And then port 4000 would be a "gziped telnet", right?

On the client side, I did the opposite:
And I should be able to telnet to localhost port 4001. Well, I’m missing something. It doesn't work. Perhaps there is an easier solution?

Edit: Seems to be a buffer problem. Writing to a pipe turns on full buffering. I would probably have to write my own compression software. :-(

probably this: https://linux.die.net/man/1/forward
or this: https://www.digi77.com/the-art-of-po...ding-on-linux/
look for compressed port forwarding.

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Thanks! This is looking promising.