A Technical Look at Iran's Internet Shutdowns

Re:A Technical Look at Iran's Internet Shutdowns by xkcd1963 on Sunday July 13, 2025 @04:32PM (#44553454)

How do people do this in China?

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Re:A Technical Look at Iran's Internet Shutdowns by mmh0000 on Sunday July 13, 2025 @07:31PM (#44554770)

Shadowsocks is the common method

https://en.wikipedia.org/wiki/Shadowsocks

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Re:A Technical Look at Iran's Internet Shutdowns by heavyset_go on Sunday July 13, 2025 @07:59PM (#44554932)

This has been DPI'd to death in China and hasn't been useful in a while.

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Re:A Technical Look at Iran's Internet Shutdowns by GardenLetter27 on Monday July 14, 2025 @06:09AM (#44558268)

Trojan and X-ray still work though, albeit hosting is the issue there.

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Re:A Technical Look at Iran's Internet Shutdowns by mohas on Sunday July 13, 2025 @05:59PM (#44554141)

this is much more severe than in China. I've never been completely shut of Internet before. each time one of my servers had access to global Internet. this time no connection whatsoever. I hope people realise that encryption needs transmission, with no wire to transfer data encryption won't help you

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Re:A Technical Look at Iran's Internet Shutdowns by ethan_smith on Monday July 14, 2025 @04:17AM (#44557605)

Chinese users typically rely on Shadowsocks (a SOCKS5 proxy designed to be undetectable), custom V2Ray configurations with obfuscation, or corporate VPNs that operate in legal gray areas, though the government continuously improves detection capabilities forcing constant adaptation of circumvention techniques.

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Re:A Technical Look at Iran's Internet Shutdowns by znano on Monday July 14, 2025 @04:26AM (#44557657)

Also obfs4 i believe is widely used there, either with tor or standalone(obfs4 over SSH). And dynamic port forwarding using SSH alone is widely used and fairly simple.

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