Configuring the IBM Informix instance for SSO

Set SQLHOSTS information for SSO
This task configures the SQLHOSTS connectivity options so that your Informix instance can support single sign-on.

Set up the concsm.cfg file for SSO
You must specify credentials encryption libraries in the communications support module (CSM) configuration file to enable single sign-on (SSO). In addition, you can control whether SSO functions with Kerberos-defined confidentiality and integrity services.

Ensure keytab file has the required key (UNIX and Linux)
Add the service principal key generated in the Key Distribution Center to the credentials information stored in the keytab file on the Informix host computer, and then validate that all necessary credentials are stored in this file.

Verify Informix uses Kerberos authentication for SSO
Before you set up the SQLHOSTS information and concsm.cfg file for the client computer in a single sign-on implementation, verify that your login service is correctly configured to use Kerberos authentication.