cloudflare.conf

#Local traffic
set_real_ip_from 127.0.0.0/8;

#CloudFlare
#These need to be updated from Cloudflare as they may have changed: https://www.cloudflare.com/ips-v4
set_real_ip_from 71.255.98.81/32;
set_real_ip_from 173.245.48.0/20;
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 141.101.64.0/18;
set_real_ip_from 108.162.192.0/18;
set_real_ip_from 190.93.240.0/20;
set_real_ip_from 188.114.96.0/20;
set_real_ip_from 197.234.240.0/22;
set_real_ip_from 198.41.128.0/17;
set_real_ip_from 162.158.0.0/15;
set_real_ip_from 104.16.0.0/13;
set_real_ip_from 104.24.0.0/14;
set_real_ip_from 172.64.0.0/13;
set_real_ip_from 131.0.72.0/22;
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 2a06:98c0::/29;
set_real_ip_from 2c0f:f248::/32;
#Default state, assume local traffic/proxy protocol header
set $forwarded_ip_header proxy_protocol;
set $real_ip $proxy_protocol_addr;

# Is Cloudflare header set? Use that header/addr instead of proxy_protocol
if ($http_cf_connecting_ip) {
        set $forwarded_ip_header CF-Connecting-IP;
        set $real_ip $http_cf_connecting_ip;
}

# Tell Nginx which header to use
real_ip_header $CF-Connecting-IP;