- cross-posted to:
- technology@lemmy.ml
- cross-posted to:
- technology@lemmy.ml
“Signal is being blocked in Venezuela and Russia. The app is a popular choice for encrypted messaging and people trying to avoid government censorship, and the blocks appear to be part of a crackdown on internal dissent in both countries…”
Peer to peer apps do not work without a centralized relay to get you around the CG-Nat that cellphones live behind. So they’re not really peer to peer. You would be playing whack-a-mole with the relays, having to spin them up as they get blocked. Many ISPs implement CG-NAT as well. Its really dependent on how the network providers structure things. Someone from the country with local knowledge would have to test it.
IPv6 doesn’t need CGNAT. So as long as it’s capable of doing IPv6, it can directly communicate peer to peer using globally unique addresses. How do I know this? Simple because my ISP on IPv4 is completely CGNAT and I cannot get anything past it. So I am completely forced to use IPv6 for any service I want to run and access from outside my network.
Sure, but ipv6 is not widely adopted. I’m behind a CG-NAT but can’t get an ipv6 so I have to operate a vps bridge to host my services. Some cell networks have ipv6 support but a few implement a NAT for it as well. AT&T only allows port 80 and 443.
Its not consistent enough to be useful without a centralized relay.
Non ipv6 parts of the internet are considered derelict at at this point.