Many search engines have a safe search setting that
filters out adult images and videos in search query return traffic.
You can enable the firewall to block search results if the end user
is not using the strictest safe search settings, and you can also
transparently enable safe search for your users. The firewall supports
safe search enforcement for the following search providers: Google,
Yahoo, Bing, Yandex, and YouTube. Consider that safe search is a
best-effort setting and service providers do not guarantee that
it works with every website, and search providers classify sites
as safe or unsafe (not Palo Alto Networks).
As safe search settings differ by search provider, get started
by reviewing the different safe search implementations. Then, enforce
safe search in one of two ways: block search results when safe search
is disabled, or transparently enable safe search for your users.