I created a service named “youtube” in the firewall objects…
Then in the firewall rules. I create a rule for youtube’'UDP port 443.
I chose the action “Reject” but still I can access the youtube. I also tried “Drop” but still nothing happens. Can someone please help me or clarify how to properly block a site/games/downloads using firewall rules in the nethserver. Thank you…
Please have a look at nDPI-feature of nethserver-firewall:
http://docs.nethserver.org/en/latest/firewall.html#deep-packet-inspection-dpi
Please note that nDPI is limited: no reject, no any, etc in rules.
Youtube is special to block. In my experice not only the nDPI-youtube-traffic has to be blocked, also the nDPI-QIC-traffic.
A list of protocols can be found here: https://www.ntop.org/products/deep-packet-inspection/ndpi/
Good luck!
Firewall section is not the right tool.
ndpi addon could be a way (with bandwidth manager), another one could be the installation of proxy with content filter
https://docs.nethserver.org/en/v7/content_filter.html
I’ll do the things you guys told me. Thank you for the replies 
Another way to go would be putting youtube.com in the DNS, pointing to your Nethserver or localhost.
The Nethserver could contain a custom error message in a virtual host (youtube.com), telling users that youtube isn’t allowed in that environment.
Best would be several methods, combined.
My 2 cents
Andy
Hi jayay, could you paste here your solution as an example please? I’m still struggling with a similar problem.
I’ve used content filterning with list and Transparent proxy.
That works fine if I can specify dedicated domains to block inside a custom category.
But is this possible to block traffic classes like according nDPI-Protocols?
I’m struggling with that…
