About quick block or allow
Block or allow content instantly without having to create or edit a web filter policy. The URLs that you block or allow are added to the built-in Custom blocked content and Custom allowed content categories found in the Customer Categories folder on the Categories page. These categories are used as policy objects in your default web filter policies provided when you bought your Smoothwall Filter. You can delete these default policies but not these built-in categories.
TIP: If you want to block a single URL or a whole domain, you can block all URLs and domains that end in .io .iu or any content from specific countries by entering io, iu or the country top-level domain.