Pluggable Authentication Module (PAM) on UNIX and Linux
You can use Pluggable Authentication Module (PAM) with the HCL Informix® ODBC Driver on the UNIX and Linux operating systems that support PAM.
PAM enables system administrators to implement different authentication mechanisms for different applications. For example, the needs of a system like the UNIX login program might be different from an application that accesses sensitive information from a database. PAM allows for many such scenarios in a single machine, because the authentication services are attached at the application level.