pam_unix2: pam_unix2 (Module for traditional password authentication )
pam_unix2:
pam_unix2: pam_unix2 is the standard Unix authentication module.
pam_unix2: The authentication component performs the task of checking the 
pam_unix2: users credentials (password).
pam_unix2:
pam_unix2: Credentials information is obtained from the /etc/passwd and the 
pam_unix2: /etc/shadow file as well if shadow is enabled. 
pam_unix2:
pam_unix2:
pam_unix2: