Protecting Images an files from direct access

[tohave]

Hi

I have protected some categories and allowed users can have access to the images and all the rest.
The problem is that when you once enter the protected directory, you are able to see it by just having the URL, without being signed in!! so there is problem in protecting stuff from ordinary users (if they find the URL)

I was wondering if there is any thing that can solve the problem?
 
by having in mind;

1- The categories must be writable (executable) by selected users: cmd 777
2- files are writable (executable) by selected users: cmd 777
3- directory is writable (executable) by selected users: cmd 777

so, if I change the : cmd 777 to something else it does not fuction properyi. Thumbnils do not show or images are not accessable! or eben the categories are not available.

Please help me to solve this problem. Thanks

[V@no]

Try find a topic "pic security", you might find its interesting