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A comment on Ask HN: The government of my country blocked VPN access. What should I use?. Parent comment

Re:Ask HN: The government of my country blocked VPN access. ... by majorchord on Friday August 29, 2025 @05:54PM (#45069876)
do you have a reliable source for this claim?
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Re:Ask HN: The government of my country blocked VPN access. ... by 1vuio0pswjnm7 on Saturday August 30, 2025 @12:05AM (#45071842)
China's use of SNI-based censorship is well-documented

For example, see

https://censorbib.nymity.ch/pdf/Niere2025a.pdf

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Re:Ask HN: The government of my country blocked VPN access. ... by ranger_danger on Saturday August 30, 2025 @01:21PM (#45076382)
Yes, but SNI is not ECH.
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Re:Ask HN: The government of my country blocked VPN access. ... by 1vuio0pswjnm7 on Saturday August 30, 2025 @10:24PM (#45079784)
China has blocked ESNI

https://gfw.report/blog/gfw_esni_blocking/en/

But SNI is not CH and ESNI is not ECH

Will China block ECH

ECH blocking has been detected in Russia

https://github.com/net4people/bbs/issues/417

According to Niere et al. (2025)

"Additionally, with the ECH extension not yet being widely used [17], [71] and focusing on privacy protection rather than censorship circumvention [60], it can be censored easily by blocking it entirely [14], [76]."

The paper describes various GFW bypass methods that currently work, including removing the SNI extension entirely

It does not mention anyone using ECH to bypass GFW

Perhaps it is too early to conclude "China blocks ECH" because ECH is not in widespread use

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