I have a Sharepoint 2013 farm, in which there are many excel files; these files are embedded in an external web page, using the <iframe> code generated by Office Web Apps Server. Everything works fine, but I dont' want users to save or download or retrieve the url of any file in sharepoint; I set the "Allow items from this document library to be downloaded to offline clients?" option to "No", but files can be downloaded yet.
Is there any way to avoid files to be downloaded? I'm open to any solution, configuration or code doesn't matter: it can be sharepoint side code, or external application code. I was interest in a solution like this one http://msdn.microsoft.com/it-it/library/hh315812.aspx, but files must be on sharepoint.
Many thanks
Fabio