Red Hat Bugzilla – Bug 102322
Unable to ssh to box with LDAP authentication enabled via PAM
Last modified: 2007-04-18 12:56:51 EDT
Description of problem:
The default config of sshd means that if you enable LDAP Authentication using
authconfig you cannot connect using ssh, but you can login at the console or by
telnet. The default sshd_config file should be changed to to allow ssh logins
to be authenticated (via PAM) against an LDAP directory.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Setup LDAP directory with user objects etc
2. Run authconfig to configure PAM and NSS to use LDAP
3. Try to ssh to system using userid stored in LDAP
4. Unable to login
Unable to login.
Should be able to login.
I found the fix after some help on the shrike mailing list, my orginal question:
and the successful answer:
That "fix" is not necessary. The real fix, I suspect, was that you
restarted ssh after making the changes to the config file.
Agreed. When you enable LDAP in authconfig, /etc/nsswitch.conf has
"ldap" added to the list of sources for passwd and group information,
among other things. This file is only read once by any given process.
Because sshd forks to handle each new connection, new connections
don't "notice" changes to the file unless you restart the listening
daemon. Marking worksforme.