When using Nginx Behind Cloudflare, logs and web applications show cloudflare sever IP instead of visitor IP.
To fix this, edit
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vi /etc/nginx/nginx.conf |
Inside “http” section, add
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set_real_ip_from 103.21.244.0/22; set_real_ip_from 103.22.200.0/22; set_real_ip_from 103.31.4.0/22; set_real_ip_from 104.16.0.0/12; set_real_ip_from 108.162.192.0/18; set_real_ip_from 131.0.72.0/22; set_real_ip_from 141.101.64.0/18; set_real_ip_from 162.158.0.0/15; set_real_ip_from 172.64.0.0/13; set_real_ip_from 173.245.48.0/20; set_real_ip_from 188.114.96.0/20; set_real_ip_from 190.93.240.0/20; set_real_ip_from 197.234.240.0/22; set_real_ip_from 198.41.128.0/17; set_real_ip_from 2400:cb00::/32; set_real_ip_from 2606:4700::/32; set_real_ip_from 2803:f800::/32; set_real_ip_from 2405:b500::/32; set_real_ip_from 2405:8100::/32; set_real_ip_from 2c0f:f248::/32; set_real_ip_from 2a06:98c0::/29; real_ip_header CF-Connecting-IP; |
You can get updated list of CloudFlare IPs from
https://www.cloudflare.com/ips/
Restart Nginx with
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service nginx restart |
Example Nginx Config
https://gist.github.com/serverok/fef5c76bf96f8e016bf64095da4a64dc
