Re: How to use serial ports?
Tapio,
From: Tapio Lehtonen <tapio.lehtonen@dnainternet.net>
Date: Fri, 13 May 2011 16:04:30 +0300
> I try to connect two pc hosts with serial ports with a null modem cable.
PPP over a null modem and through modems and telephone lines have worked
here for years. Configurations here.
http://carnot.yi.org/NetworksPage.html
mgetty provides ringback on the modem. Otherwise plain getty should work.
Recently the Dalton machine was replaced with different hardware and a
fresh installation of Squeeze. PPP has yet to work. Currently the null
modem is giving this in /var/log/syslog.
May 13 08:56:14 dalton kernel: [ 80.425375] PPP generic driver version 2.4.2
May 13 08:56:14 dalton pppd[2046]: The remote system is required to authenticate itself
May 13 08:56:14 dalton pppd[2046]: but I couldn't find any suitable secret (password) for it to use to do so.
Previously, PPP would refer to /etc/passwd but seems to have forgotten that.
A glitch between mgetty and pppd? Something new in authentication?
> ... starting kermit on both ends, ...
I've never used kermit in linux. In /etc/inittab on one machine you
could start getty. Then try a simple terminal emulator on the other machine.
If that fails check /var/log/syslog.
Regards, ... Peter E.
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