OSI APP Layer → URL
URLカテゴリって誰が決めてるんだ?セキュリティ系の会社が勝手にやってるんだっけ
Google検索「プロキシ カテゴリーとは」
https://www.daj.jp/bs/i-filter/function/filtering/category/
https://atmarkit.itmedia.co.jp/ait/articles/1404/09/news002.html
Google検索「who define the categories of URLs」
https://help.zscaler.com/zia/about-url-categories
https://docs.paloaltonetworks.com/pan-os/10-1/pan-os-admin/url-filtering/url-categories
https://www.qush.com/resources/blog/url-classification-reveal