PAM_LDAP and NSS_LDAP Post: 302507552

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Operating Systems AIX PAM_LDAP and NSS_LDAP Post 302507552 by zaxxon on Thursday 24th of March 2011 07:15:39 AM

03-24-2011

Registered User

Thanks for your answer.

Yes, "AIX for LDAP" is a term I tend to use when at least secldapclntd is involved on the client side. Sorry if I confused you. I use it that way to make a clear difference between it and OpenLDAP which is also used on Linux boxes in our environment.

For administrative accounts, we have a similar layout as you have in your environment. DBAs connect with ssh (your hosts.equiv/rlogin is not encrypted) to the DB box, authenticate against LDAP, su to a local account, since these can be members of local groups according the IBM Redbook "Integrating AIX into heterogenous LDAP Environment" (sg247165). They are also allowed to sudo su to informix.

Our problem is, that normal users use a Windows application which connects to the database and the database will check for the local credential, which are just local. So this PAM_LDAP thing would have been a way to implement an authentication via LDAP for every user.
Changing the user's application to authenticate vs LDAP first is sadly not an option.

zaxxon

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LEARN ABOUT V7

pam_ldap

pam_ldap(8)						      System Manager's Manual						       pam_ldap(8)

NAME

       pam_ldap - PAM module for LDAP-based authentication

SYNOPSIS

       pam_ldap.so [...]

DESCRIPTION

       This is a PAM module that uses an LDAP server to verify user access rights and credentials.

OPTIONS

       use_first_pass
	      Specifies that the PAM module should use the first password provided in the authentication stack and not prompt the user for a pass-
	      word.

       try_first_pass
	      Specifies that the PAM module should use the first password provided in the authentication stack and if that fails prompt  the  user
	      for a password.

       nullok Specifying this option allows users to log in with a blank password.  Normally logins without a password are denied.

       ignore_unknown_user
	      Specifies  that  the  PAM module should return PAM_IGNORE for users that are not present in the LDAP directory.  This causes the PAM
	      framework to ignore this module.

       ignore_authinfo_unavail
	      Specifies that the PAM module should return PAM_IGNORE if it cannot contact the LDAP server.  This causes the PAM framework  to  ig-
	      nore this module.

       no_warn
	      Specifies that warning messages should not be propagated to the PAM application.

       use_authtok
	      This  causes the PAM module to use the earlier provided password when changing the password. The module will not prompt the user for
	      a new password (it is analogous to use_first_pass).

       debug  This option causes the PAM module to log debugging information to syslog(3).

       minimum_uid=UID
	      This option causes the PAM module to ignore the user if the user id is lower than the specified value. This can be  used	to  bypass
	      LDAP checks for system users (e.g. by setting it to 1000).

MODULE SERVICES PROVIDED

       All services are provided by this module but currently sessions changes are not implemented in the nslcd daemon.

FILES

       /etc/pam.conf
	      the main PAM configuration file

       /etc/nslcd.conf
	      The configuration file for the nslcd daemon (see nslcd.conf(5))

SEE ALSO

       pam.conf(5), nslcd(8), nslcd.conf(5)

AUTHOR

       This manual was written by Arthur de Jong <arthur@arthurdejong.org>.

Version 0.8.10							     Jun 2012							       pam_ldap(8)