Many search engines have a safe search setting that filters out adult images and videos in search query return traffic. Starting in PAN-OS 6.0 or later with content release version 475, you can Enable Safe Search Enforcement so that the firewall will prevent end users from seeing search results that are not filtered with the strictest safe search settings.
The firewall can enforce transparent safe search for the following search providers: Google, Yahoo, and Bing. This is a best-effort setting and is not guaranteed by the search providers to work with every website.
Also, because most search providers now use SSL to return search results, you must also configure a Decryption policy for the search traffic to enable the firewall to inspect the search traffic and enforce safe search.
For more information about the differences between search settings from different search providers, see Safe Search Enforcement.
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