Hide Folder in Directory Listing and WebDav

Hello guys,

i tried for my first time to configur a IIS 8.
Now I want to Hide some folder and files.

I Tried with:

<requestFiltering><hiddenSegments applyToWebDAV="true"><add segment="folder" /></hiddenSegments></requestFiltering>

to hide the "folder"

But when i connect to the page or webdav i can see the folder, but i can't connect

I want additional that the user can't see the "folder".

I Hope somebody can help me..

Thanks