[Fedora-directory-users] LDAP search issue.

Hello; I am using Fedora Directory Server 1.0.2. I have a question on LDAP search issue. I want to disable full search on the LDAP tree. Eg: My LDAP Tree is: cn=John Smith, o=Dept1, c=US cn=Ann Adams, o=Dept1, c=US I want to deny to read full listing of the tree but only allow when the search condition meets only the required person. In the example above I want nobody to be listed. But when the search criteria is "c=US, o=Dept1, cn=Ann Adams" this entry must be listed. When a search on "c=US" comes, nothing must be listed. What is the correct Access Control Information for this request?? Thanks.