How do I disable guest/anonymous read access in WebAccess 3.x? (421e)

[macnone]

"With an Internet browser, you can view published folders and files from anywhere"

The missing part is: without credentials ... How can I restrict people from accessing my files that are published on my NAS to only ones with the User/Password and disable guest browsing of my files?

WebAccess 3.x
Linkstation 421e
Folder is setup for one user R/W and the rest of the users have NO access... the access level set to be inherited but it's not - it gives Read access to guest/anonymous; and I do not want that to be the case. When I access via using BuffaloNAS.com there is no login required to read the folder contents. It's major flaw in security of the data I'm putting out on the share.