Here is is the write up that I read to figure out how to do setup to auto-restrict users to certain hosts. 

http://www.hurricanelabs.com/september2009_login_security_using_openldap_and_pam



On Tue, Dec 8, 2009 at 4:40 PM, Howard Chu <hyc@symas.com> wrote:
Shamika Joshi wrote:
Thanks Howard,
Could you point me to some good documentation or HowTos on that?

Search the archives. I posted an example in here a few months ago.
http://www.openldap.org/lists/openldap-technical/200905/msg00108.html


--
 -- Howard Chu
 CTO, Symas Corp.           http://www.symas.com
 Director, Highland Sun     http://highlandsun.com/hyc/
 Chief Architect, OpenLDAP  http://www.openldap.org/project/