My networking knowledge is not good, so maybe it’s nonsense indeed. I just thought if everyone in the network knows what is blocked then DDoS protection could be distributed because every “reputable” switch/router in the network can block connection as early as possible without hopping close to destination creating unnecessary traffic

Is it regional? Am I safe to update in Europe?

I’m wondering can DNS be extended to handle blacklisting. It already has some level of security resolving “C should have no control over A and B communication”.

Duckduckgo