Squid can't proxy https traffic. You have to block all https to force people to use the proxy. You could block all https and then allow it only to sites you need. As Metu69salemi suggested, create an alias containing all of facebook's IPs and block that. Steve. Squid can indeed proxy HTTPS traffic.
how to block websites using pfsense - Spiceworks Aug 12, 2017 How to block HTTP and HTTPS Facebook with pfSense block HTTP HTTPS Facebook pfSense. Facebook works on HTTPS and there are some tutorials that help you to install “Squid3” Development Package on pfSense to configure pfSense for blocking some of websites but I found issues with it and it wasn’t worthy for my work environment along with “blocking Facebook with pfSense”. Tutorial:Internet Filtering / Site Blocking Using Jan 13, 2018
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PFSENSE Firewall Tutorials | BillySoft Academy
Jul 02, 2020 · For example, if you wanted to block Google, you would type www.google.com. If you're blocking sites on Google Chrome, you'll need to place a space and then the "www.[site].com" version of the website's address after the "[site].com" version. To block Facebook, for example, you would type in 127.0.0.1 facebook.com www.facebook.com.
How to Block TikTok on WiFi Network Router? Dec 29, 2019 Install and Configure pfBlockerNg for DNS Black Listing in Jun 13, 2017