Nginx只允许CDN IP访问 隐藏原站
Arn0
 2019-11-18 17:50:11   

获取CDN IP地址

先查一下CDN的回源IP，以CloudFlare为例，他们家的回源IP可以在这里找到。

将IP保存为文件

将刚才找到的IP地址保存到/etc/nginx/cf.addr 格式就是这个亚子：

# https://www.cloudflare.com/ips
# IPv4
allow 103.21.244.0/22;
allow 103.22.200.0/22;
allow 103.31.4.0/22;
allow 104.16.0.0/12;
allow 108.162.192.0/18;
allow 131.0.72.0/22;
allow 141.101.64.0/18;
allow 162.158.0.0/15;
allow 172.64.0.0/13;
allow 173.245.48.0/20;
allow 188.114.96.0/20;
allow 190.93.240.0/20;
allow 197.234.240.0/22;
allow 198.41.128.0/17;

# IPv6
allow 2400:cb00::/32;
allow 2405:8100::/32;
allow 2405:b500::/32;
allow 2606:4700::/32;
allow 2803:f800::/32;
allow 2c0f:f248::/32;
allow 2a06:98c0::/29;

修改网站配置文件

在网站的Nginx配置文件Server块里面添加这两行

include /etc/nginx/cf.addr;
deny all;

伪装

顺便将IP访问的流量直接403掉

server {
    listen 80 default_server;
    server_name _;
    server_tokens off;
    return 403;
}

重启Nginx

/usr/nginx/sbin/nginx -s reload

大功告成

参考自Nova Kwok’s Awesome Blog

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