DNS settings for YouTube mode enforcement

While YouTube access (block or allow) is controlled via SchoolProtect, the safety modes which determine if a specific video plays or not is determined via DNS. This page is to help you change between strict and moderate mode within the schools network on your Windows DNS server. Follow the instructions below in conjunction with the instructions at youtubemode.lgfl.net, using these addresses as relevant:

Strict - DNS server addresses : 172.30.178.53 and 172.30.178.54

Moderate - DNS server addresses : 172.30.187.53 and 172.30.187.54

Configure DNS within your school server to meet your YouTube needs

NB this is school wide and should never be used for open mode.

Click Start > Run > dnsmgmt.msc:

or simply press the Windows key on the keyboard/taskbar and search DNS and click the icon below:
Right click your Server on the top right and choose Properties.
Click the Forwarders tab at the top of the window popup and you should see something similar to this. Your IP addresses will differ depending on how your technicians have configured them:
Press Edit and add the forwarders for the YouTube mode you require for the whole site by first removing the current ones (select and delete), then add the entries required as above.
Once you click OK, this will update your forwarders to look towards LGfL and those servers will handle the YouTube mode enforcement for you. You will notice the Server FQDN will say <Unable to resolve> - this is expected as the servers do not have a name.
To confirm there are no conflicts, you may wish to check the Conditional Forwarders folder for historical entries for YouTube/Google. If there are any, these should be removed as that is the same as Open mode and therefore not suitable.

Simply right click each item and press delete:
Once changed, it would be worth clearing the DNS cache to remove any stale records: right click your Server top left again and press Clear Cache.

Repeat this process for each domain controller/DNS server you have within your network.

Testing & Troubleshooting

To confirm if the change has been made, you can ping www.youtube.com to make sure the enforcement is in place.

Pinging www.youtube.com should give you these responses:

Strict : restrict.youtube.com (Resolves to 216.239.38.120)

Moderate : restrictmoderate.youtube.com (Resolves to 216.239.38.119)

Open : youtube-ui.l.google.com (Resolves to various, not the above 2)