Client IP on Linode Load Balancer + Cloud Flare
Hello guys!
I have a question about Linode Load Balancer + Cloud Flare. I'm trying to get the IP of client accessing my website, but always got the cloud flare IP.
We have 3 nodes on Linode LB. The Cloud Flare is pointing to Linode LB IP address. Also, we enabled "real ip" module on Nginx.
So, our configuration is:
# Load Balander IP
set_real_ip_from x.x.x.x;
set_real_ip_from y:y:y::y:y;
# internal
set_real_ip_from z.z.z.z.z;
# Cloud Flare IPs
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 X-Forwarded-For;
So, we are always getting the Cloud Flare IP, not the client on logs or on application.
Could you help us?
Thanks in advance!
Best Regards,
Baboo
1 Reply
I was looking at some CloudFlare documentation, and this article on True-Client-IP says:
If you're interested in the actual client (visitor) IP address, we recommend relying on the CF-Connecting-IP (or True-Client-IP) instead of X-Forwarded-For.
In this article it appears that can be enabled by setting the following in your ngx_http_realip_module module:
real_ip_header CF-Connecting-IP;
#real_ip_header X-Forwarded-For;
I've never personally used this myself, so please send us an update if it works. :)