opened 03:56PM - 27 Jun 25 UTC
Iran
This is a continuation of #484, the thread about the network shutdown in Iran be… tween 2025-06-18 to 2025-06-25. Even after the total shutdown ended, network blocking remains severe. This thread is for discussion of observations and circumvention techniques since the shutdown.
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_Originally posted by @firewallPass in [#484](https://github.com/net4people/bbs/issues/484#issuecomment-3009361822)_
> on MCI,ipv6 is still blocked(in my region,not sure about other cities) and udp is either still blocked or severly limited,so we are back online but gfw is still in hell mode,atleast for MCI
_Originally posted by @ranvi25 in [#484](https://github.com/net4people/bbs/issues/484#issuecomment-3011967607)_
> **Update on IRFW _(now)_:**
>
> **IPv6:** disabled on all ISPs.
>
> **QUIC:** disabled on all ISPs.
>
> **Unidentified UDP _(e.g. hy2+obfs)_:** blocked on most ISPs. _(depends on the dest.ip)_
>
> **ICMP:**
> - MCI, TCI: blocked after 2 or 3 packets. When blocked, all other types of connections are also blocked. (like HTTP, HTTPS, ...) Only HTTPS Fragment (MahsaNG) works.
> - MTN: somewhat ok.
>
> **TLS:**
> - MCI, TCI: ClientHello is ok, but ServerHello is blocked! Data can reach the server, but no data will get to the client.
> - MTN: Better than MCI, TCI. But TLS VPN is blocked. Only HTTP tunnels work.
>
>
> ### Know the IRFW better: https://mahsanet.com/blog/6/understanding-the-iranian-great-firewall
Сегодня все куда интересней разворачивается.
Пишу в эту тему, потому что проблема коммуникации внутри их сети, через интранет и местные imap/pop3, решалась с помощью DeltaChat. Возможно возьмусь за описание, почитаю их fediversы. Создам отдельный тред.