On Mon, Nov 3, 2014 at 12:34 PM, Barry Brimer <lists at brimer.org> wrote: >> I am using SSSD to get user AUTH from a backend Samba4 AD/DC. >> >> For Linux clients sssd.conf is configured to query Samba4 AD based on >> LDAP/Kerberos i.e. the Linux clients have not done a Domain join. >> Physical console logins -- things are working fine with changes to NSS >> and PAM (tool authconfig) for domain User AUTH on Linux and Windows >> clients. >> >> However, I want to restrict access to certain machines to users of a >> specific group e.g. HR. I guess this is possible on Windows clients >> with group policies. >> Is the same possible on CentOS (Linux) workstations. > > > I am not familiar with the inner workings of SSSD, but with pam_listfile you > can specify users or groups that must be met for pam to succeed. Thanks. This link [1] has a bit more details on the implementation (I found it just after posting the query) for the files. As for PAM <> SSSD interaction, with proper NSS config, the query first goes to the Directory Server, failing which to 'local' /etc/group. [1] <http://www.cyberciti.biz/tips/howto-deny-allow-linux-user-group-login.html> -- Arun Khan