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这两天北京开会，GFW探测功率拉满了，对海外ip不是直接封锁ip, 而是墙TCP端口，阻断被检测到翻墙的海外ip所有端口的TCP连接，而ICMP(Ping) 和UDP则正常。之前4月份中国移动蜂窝移动出现过类似现象，可能是之前是测试，现在大范围应用。
