https://www.currentware.com/block-d...-from-internet/
這個應該可以, 麻煩自行研究一下.
上面那個網址剛進去的一段介紹:
"
If you would like to learn how to prevent employees from downloading files from internet browsers such as Google Chrome, Mozilla Firefox, Internet Explorer, Microsoft Edge, Safari, or Opera, you have come to the right place."