Great Firewall Report (GFW), an organization that monitors and reports on China’s censorship efforts, has this week posted a pair of assessments indicating a crackdown on TLS encryption-based tools used to evade the Firewall.The TLS-based circumvention protocols that are reportedly blocked include trojan, Xray, V2Ray TLS+Websocket, VLESS, and gRPC.”Trojan is a tool that promises it can leap over the Great Firewall using TLS encryption.- Kylin: The multiple semi-official Chinese versions of Ubuntu- Chinese scammers target kids with promise of extra gaming hours- Yahoo shutters email service in China- Hong Kong Watch says its website suddenly can't be seen in Hong KongEarlier in the week, Great Firewall Report also posted analysis asserting China has barred google.com and all of its subdomains.It’s also hard to reconcile Great Firewall Report’s assertion and Google’s decision from earlier this week to discontinue availability of its online translation service in China due to Beijing's censorship.Specifically, the censor looks for SNI values in Transport Layer Security (TLS) ClientHello messages, and when a SNI value matches the blacklist rules, the censor sends forged TCP RST packets to tear down the connections.”Eight days later, domain name system filtering kicked in to block queries and hamper access to any Google domain."