What can I use in the nginx config to make it clear any existing X-Forwarded-For headers before setting its own? I am currently using Nginx to terminate SSL before passing traffic to HAProxy to load balance.

Right now, I have:

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

This will append a new IP address to the end of any existing X-Forwarded-For IP addresses however. Is there a way to only keep the address seen by Nginx?


Just don't use $proxy_add_x_forwarded_for - the whole purpose that it exists is to do the appending behavior.


proxy_set_header X-Forwarded-For $remote_addr;

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