Using Google search will often take users (unknowingly) to the HTTPS version of their search engine. This changes the search experience as the data and content become encrypted, making it hard to filter against content or key words using filter systems such as WebScreen 2 and prevents the Google Safe Search function from being enforced.
If you wish to disable Google searches from taking place in an HTTPS environment so that filtering rules can be enforced along with Safe Search, you can do so by using the DNS servers in the core of the LGfL Network. These have been configured to ensure that any request for https://www.google.ee is redirected to a non-HTTPS version of the Google site in the locale requested. This means that for example if a user trys to surf to https://www.google.ee/ they will always end up at http://www.google.ee/
This DNS redirection does NOT affect other Google systems such as Gmail, to which secure access is still available.
In the LGfL 2.0 network, the LGfL core DNS servers located at 172.30.178.53 and 172.30.178.54 can be used to perform this redirect for Google, in other broadband networks use your core DNS servers.
If you do not wish to make use of this service and wish to run your own local DNS then you can point them at root DNS servers on the internet which are NOT blocked on your network by default.
If you wish to completely secure your school’s network then please raise a support case and ask for all non-core DNS requests to be blocked through your local firewall. This will prevent local users from changing the DNS servers they are using away from the core servers.