3 ms·

Cloud Flare supports ECH. https://developers.cloudflare.com/ssl/edge-certificates/ech/ https://developers.cloudflare.com/ssl/edge-certificates/ech/

• immibis 1y ago
  China blocks ECH.
  • majorchord 1y ago
    do you have a reliable source for this claim?
    • 1vuio0pswjnm7 1y ago
      China's use of SNI-based censorship is well-documented For example, see https://censorbib.nymity.ch/pdf/Niere2025a.pdf https://censorbib.nymity.ch/pdf/Niere2025a.pdf
      • ranger_danger 1y ago
        Yes, but SNI is not ECH.
      • 1vuio0pswjnm7 1y ago
        China has blocked ESNI https://gfw.report/blog/gfw_esni_blocking/en/ 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 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
• 1vuio0pswjnm7 1y ago
  Any examples of Cloudflare client websites that have enabled ECH