Subj : openbsd telnet to serial
To   : phigan
From : bbsing
Date : Thu Nov 27 2025 20:15:03

  Re: openbsd telnet to serial
  By: bbsing to phigan on Thu Nov 27 2025 18:01:12

 >   Re: openbsd telnet to serial
 >   By: phigan to bbsing on Wed Nov 26 2025 05:43:54
 >
 >  >   Re: openbsd telnet to serial
 >  > Have you tried using a raw connection into it instead of telnet? Try this for science.. make sure you have netcat (nc)
 >  > installed.
 >  > Create a file called raw.sh with this in it:
 >
 >  > settings=$(stty -g)
 >  > stty raw -echo
 >  > nc $1 $2
 >  > stty $settings
 >
 >  > then 'chmod +x raw.sh' and then './raw.sh ipaddress port'. Just one thing to note, when you finally disconnect, you need to
 >  > hit
 >  > a
 >  > key to return to your prompt.
 >
 >  > The reason for this is telnet does some negotiation on connect, and you're not running telnetd. Your client says "Hey, let's
 >  > agree
 >  > on some stuff!" but your server isn't listening for that.
 >
 >

So somehow I have to get my modem to use telnetd as the program instead of going to getty, then when a client telnet's to my system the password will not appear when the client types it.

freebsd handbook doesn't mention this behavior about ttys and dialin specifier, or just a std.9600 specifier.

A new adventure.

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