what is the file /etc/pam_smb.conf means?

[Barry Brimer]

> in my linux system,there is a directory pam.d and a file  /etc/pam_smb.conf.
/etc/pam.d is where your main pam configuration is stored, it is 
essential, do not remove it.  /etc/pam_smb.conf is used to configure the 
pam_smb_auth.so pam module that can be used to do NT4 style authentication 
against a Windows domain.  Unless you are using pam_smb_auth.so in your 
pam configuration it is not needed.

Barry