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What is URL filtering?
URL filtering is one of the most common types of web filtering techniques used by organizations to restrict the kinds of content that their users may access. URL filtering blocks users from loading questionable websites or hosted files via corporate device or network resources.
The filter is triggered by comparing the URL address a user is trying to access against policy lists that specify whether to block, allow, and/or track visits to certain URL addresses. The URL filtering process occurs at the application layer by examining URL requests over common protocols like HTTP/HTTPS, FTP, and SMTP.
Malicious, time-wasting, or otherwise questionable URL addresses can be filtered on a page-by-page basis as well as on a category basis to broadly block access to certain kinds of content such as gambling, social media, or known phishing…