samba - Feb 2010 - Winbind Auth - prevent some users from logging on

Hey folks,

New to the list - and I hope this isn't a dumb question.

I am in the process of revamping the way we authenticate to our Linux
servers.  Moving away from pam_ldap and pam_nss, in favor of winbind and
pam_nss.  The reason for this is that I feel winbindd does a better job of
failing over from a unavailable authentication server than pam_ldap.

In any case - I have it all working well on CentOS 5.4, but my only delimma
is how to prevent unwanted users from logging onto servers.  Using pam_ldap
we would use the pam_filter option in ldap.conf to define who we wanted to
allow to login using an LDAP attribute.

Is there a setting in smb.conf or some other winbind mechanism for defining
who is allowed to login?

Note - this should include not only console, but ssh and any other service
that uses the system-auth PAM.

Many thanks in advance,

Eddy.

On Wed, Feb 03, 2010 at 04:11:02PM -0700, Eddy Sturg
wrote:
> Hey folks,
> 
> New to the list - and I hope this isn't a dumb question.
> 
> I am in the process of revamping the way we authenticate to our Linux
> servers.  Moving away from pam_ldap and pam_nss, in favor of winbind and
> pam_nss.  The reason for this is that I feel winbindd does a better job of
> failing over from a unavailable authentication server than pam_ldap.
> 
> In any case - I have it all working well on CentOS 5.4, but my only delimma
> is how to prevent unwanted users from logging onto servers.  Using pam_ldap
> we would use the pam_filter option in ldap.conf to define who we wanted to
> allow to login using an LDAP attribute.
> 
> Is there a setting in smb.conf or some other winbind mechanism for defining
> who is allowed to login?
> 
> Note - this should include not only console, but ssh and any other service
> that uses the system-auth PAM.
Doesn't pam_listfile do what you want ?

http://www.cyberciti.biz/tips/howto-deny-allow-linux-user-group-login.html

No dependencies on Samba.

Jeremy.