 | | | Root login fails when using serial dialup modem | Root login fails when using serial dialup modem 2007-11-29 - By Bill Jones
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Thanks for the reply Rick.
There wasn't a usertty file and securetty did indeed have /dev/ttyS0 as
an entry. We got around the issue by creating a user and then su to root
after successfully logging in via the modem.
Again, thanks for taking time to reply.
Bill
-- --Original Message-- --
From: redhat-install-list-bounces@(protected)
[mailto:redhat-install-list-bounces@(protected)] On Behalf Of Rick
Stevens
Sent: Wednesday, November 28, 2007 1:59 PM
To: Getting started with Red Hat Linux
Subject: Re: Root login fails when using serial dialup modem
On Tue, 2007-11-27 at 23:11 -0500, Bill Jones wrote:
> I'm trying to help someone configure their filesystems using remote
> dialup but the root user login fails when I try to login after the
> modem answers and provides the login prompt. I have ttyS0 in the
> /etc/securetty file. RHEL 4 is the s/w version in question. It says
> invalid login when I attempt root login. The same login and p/w works
> from the system console. Does anyone have ideas what is causing the
> login to fail?
The first things to check are /var/log/messages and /var/log/secure to
see what's going on. Specifically, verify that the tty being presented
to login is, indeed, /dev/ttyS0. Sometimes the name gets mogrified
(e.g. shows up as /dev/modem or some such nonsense).
You should also check to see if you have an /etc/usertty file. If you
do, check the content and verify there aren't any extra access
restrictions set up.
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- CDN Systems, Internap, Inc. http://www.internap.com -
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