How the great firewall of China detects and blocks fully encrypted traffic [pdf] https://news.ycombinator.com/item?id=36531485 https://news.ycombinator.com/item

How the great firewall of China detects and blocks fully encrypted traffic [pdf] https://news.ycombinator.com/item?id=36531485 https://news.ycombinator.com/item?id=36531485