8. Implementing PAM in Ingres : How to Implement LDAP Authentication Using PAM : The Ingres PAM Configuration File (for LDAP)
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The Ingres PAM Configuration File (for LDAP)
The PAM component of the ingvalidpam program references a service configuration file named /etc/pam.d/ingres. For PAM over LDAP, the following entries are required:
auth sufficient pam_ldap.so
auth sufficient pam_nologin.so
account sufficient pam_ldap.so
Note:  The ldap.conf and ingres files are owned by root, but must be world-readable. Execute chmod 644 on these files to ensure they have the correct permissions.