Quickfinder and security


I'm testing Quickfinder on OES 11.
The purpose is to index files that are located on several file systems that are mounted with CIFS on the QF server.
Indexing is working but the problem is that anyone can make search with "public" user.
I saw that there is sevral ways to restrict access to indexs but it seems that it is working only with NSS fils servers.

Any good idea?