Rate Limit (IP) Client Ip or Proxy Ip

Website, Application, Performance Security
#1

Hi,

Cloudflare uses rate limiting based on ip address in WAF.
But say the client making the request is sitting behind a proxy.

Which ip will Cloudflare use to block, will it use the client ip or the proxy ip?

Further can I configure Cloudflare to use both ips?

#2

The IP that makes the connection to Cloudflare, so the proxy IP.

Only if the proxy is making the original IP known to you in a header and that would require Advanced Rate Limiting which is an Enterprise product.

#3

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