添加一个文件cf.conf，里面记录的是允许访问的ip # https://www.cloudflare.com/ips # IPv4 allow 173.245.48.0/20; allow 103.21.244.0/22; allow 103.22.200.0/22; allow 103.31.4.0/22; allow 141.101.64.0/18; allow 108.162.192.0/18; allow 190.93.240.0/20; allow 188.114.96.0/20; allow 197.234.240.0/22; allow 198.41.128.0/17; allow 162.158.0.0/15; allow 104.16.0.0/12; allow 172.64.0.0/13; allow 131.0.72.0/22; # IPv6 allow 2400:cb00::/32; allow 2606:4700::/32; allow 2803:f800::/32; allow 2405:b500::/32; allow 2405:8100::/32; allow 2a06:98c0::/29; allow 2c0f:f248::/32; 修改 /etc/nginx/sites-available/default中的内容，添加include cf.conf和deny all location / { include /etc/nginx/cf.conf; deny all; # First attempt to serve request as file, then # as directory, then fall back to displaying a 404.……

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