blocking File copy on SSG 5 issue

[davy2k]

Hi All,
I configured an SSG 5 to block all access from the DMZ to LAN and allow all access from LAN to DMZ, the following occurs:

When a user navigates to a shared folder on the DMZ \\dmz-server\folder on his PC on the LAN, he is able to copy (or drag and drop) files from DMZ to LAN).

But when a user tried to navigate to a shared folder on the LAN from the DMZ access is denied.

Please could someone explain how this could be possible and how to completely block the file "drag and drop" issue..

Thank you for your envisaged help