The infamous "check pass; user unknown"

Tay, Gary Gary_Tay at platts.com
Fri Apr 29 07:19:25 UTC 2005


I believe these msgs are harmless.

You may set syslog to be less verbose, the default /etc/syslog.conf
comes bundled with RH has set "*.info", see "man syslog.conf"

Remove *.info from this line and "pkill -HUP syslogd".

#*.info;mail.none;authpriv.none;cron.none
/var/log/messages
mail.none;authpriv.none;cron.none               /var/log/messages

Gary

-----Original Message-----
From: pam-list-bounces at redhat.com [mailto:pam-list-bounces at redhat.com]
On Behalf Of Oliver Schulze L.
Sent: Thursday, April 28, 2005 11:56 PM
To: pam-list at redhat.com
Subject: The infamous "check pass; user unknown"


Hi,
I don't know if this is the correct list for this, but this is my
problem.

I have Linux (RH9/Fedora/RHEL4) setup with ldap for local accounts, that
is, for replacing the /etc/passwd with ldap.

All is working correctly. I have run 'authconfig' and the program
configured /etc/ldap.conf and /etc/nsswitch.conf

The problem is that in /var/log/messages I get this 2 lines for every 
*sucessfull*
login. That is for every kind of login: console, pop3, imap, ssh, etc

Apr 28 11:53:00 server app(pam_unix)[13817]: check pass; user unknown
Apr 28 11:53:00 server app(pam_unix)[13817]: authentication failure; 
logname= uid=0 euid=0 tty= ruser= rhost=

The string server is the hostname, the string app is the application 
that the user used
for login in, like login, sshd, dovecot, etc

I wonder if there is a solution for this or is some kind of limitation 
or a message
that can not be supressed using the convination of pam/ldap/nss_ldap ?

Many thanks
Oliver

-- 
Oliver Schulze L.
<oliver at samera.com.py>

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