Dear users, I need to block the access of certain users (cell phones and desktop) to download images and voice messages over the company's Wi-Fi, but to allow them to receive and send messages as well as calls. I have done it for the control of applications but my users with permissions for this I allow everything that mentions whatsapp in the list of applications but still does not let them download the images or voice messages but if everything else. Just in case the transfer section has the most blocked applications. Please help
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