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  • openbsd telnet to serial

    From bbsing@VERT/LUNAROUT to All on Mon Nov 24 21:36:11 2025
    I've been trying to understand why when I telnet to my openbsd to a modem hooked to the serial port, the password is echoed at the login prompt.

    This happens from any linux client I've used to telnet to the openbsd system over the serial port.

    Same behavior happens with a linux system.

    My setup is really simple.
    modem is set to auto answer ats0=1

    /etc/boot.conf has the following:
    set tty com0

    /etc/ttys has the following:
    console "/usr/libexec/getty std.9600" vt220 on secure

    ----------------------------------------------------------

    Does anyone know why the password is shown, and how to get it to not echo when the user types it in?

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