中国的防火长城（GFW）于2025年8月20日对 TCP 443 端口实施了大规模、无差别的封锁。本报告记录了我们对该事件的测量与分析。| GFW Report
The Great Firewall of China (GFW) conducted a large-scale, unconditional block targeting TCP port 443 on August 20, 2025. This report documents the measurements and analysis we conducted of that event.| GFW Report