If Not Safe For Work (NSFW) images that are not suitable for an educational or workplace environment continue appear, even when you have turned on Force SafeSearch, you can create a policy with the Enforce Google Image Licensing content modification to tell your Smoothwall Filter to use Google's image search with the user rights of "Labelled for reuse with modification".
You can use this content modification with iOS devices, provided you are using a browser and not an app.
You can also use Google to restrict users to only view images that are "Free to be used, shared or modified", see the Google help topic, Find free-to-use images. This significantly reduces the amount of images returned regardless of the search.
- Create a content modification policy with these settings, see our help topic, Creating content modification policies:
- Who: "Everyone, or the relevant user or groups to apply this policy to."
- What: "Web Search"
- Where: "Everywhere, or the relevant location to apply this policy to."
- Action: "Apply"
- Included content modifications: "Enforce Google Image Licensing"
- It takes a few minutes for your changes to take effect.
- You might need to restart your browser.
When the policy is active, you should see the Labeled for reuse with modification setting activated, as shown in this image:
If a user tries to deactivate the setting, your new policy overrides it.
- Create a Decrypt and Inspect HTTPS inspection policy, see our help topic, Creating HTTPS inspection policies.