Thumbnail Blocking via Sophos Firewall

Hi,

you block the website using web proxy etc.

Ian

didn't understand could please provide kb article or elaborate the steps if possible.

Also, by "thumbnail for websites" what do you specifically mean? is it the images that a website shows? or if not please elaborate and if necessary kindly share screenshot/s. Thank you

If you are using Sophos Firewall for Web Protection and you are trying to get search engines such as Google not to return results that are pornographic (including potentially previews for those websites - what I assume you mean by thumbnails) you need to use the SafeSearch feature of those search engines.

SafeSearch can be enforce by the web proxy, go to the web policy you are using and Click Edit.  
If you are using DPI mode, please see this article for steps: community.sophos.com/.../sophos-firewall-safesearch---enforcement-when-using-the-dpi-engine