URL Filtering is a security technique used to restrict or allow access to specific websites or web content based on predefined criteria. It involves inspecting and analyzing Uniform Resource Locators (URLs) or web addresses to determine if the requested site aligns with acceptable use policies or security requirements. URL Filtering solutions are commonly integrated into firewalls, next-generation firewalls (NGFWs), web proxies, and security gateways. Popular tools include Cisco Umbrella, Websense (Forcepoint), Barracuda Web Security Gateway, and Zscaler. Learn more: https://en.wikipedia.org/wiki/URL_Filtering