How would ban on matrix protocol work

Question

Hi.Some days ago,Indian government in a news report said about banning 14 chat apps for "promoting terrorism" in effect because apparently these apps have e2ee and that they do not have any representative in India who could be punished for not giving Indian govt a backdoor access, which by effect WhatsApp must've given.So, today element.io started getting blocked for me. 10 minutes later, it was back and another 10 minutes later it was back down.Here is the question , If a hostile govt wants to "ban" matrix network for example, how would that work on the ground? Would they manually ban each and every thousands of public and private servers? Clients?Matrix at least won't comply so how?https://www.theweek.in/news/india/2023/05/01/14-messaging-apps-banned-in-jammu-and-kashmir-for-spreading-terror.html

smoldesu · Accepted Answer

ISPs have the ability to inspect your packets and get a good idea of what your traffic contains (used to detect piracy in many places). It might primarily rely on the government demanding that all domestic internet providers try to detect and block Matrix-like traffic.

Arathorn · Answer

which homeserver are you on? they could simply be blocking matrix.org? (although this would already be a little tricky given matrix.org is behind cloudflare)