In the left pane of the window, select the user account for which you want to restrict file downloads from the Internet.
In the right pane of the window, click the Enable Parental Control button.
In the left pane of the window, select the Web Control category.
In the upper pane of the window, click the Enable button.
Select the Restrict file downloads checkbox and the checkboxes for types of files that you don't want the user to download.
If necessary, you can allow access to a limited set of websites in a blocked category, or block access to specific websites while allowing all other websites, by creating a list of exclusions.
You can view a report on attempts to visit blocked websites and download files in prohibited categories on the Reports tab of the Parental Control window.