Niranjan,
You’re probably looking for the functionality of mod_emoteip (https://httpd.apache.org/docs/2.4/mod/mod_remoteip.html).
I followed the guide at https://www.globo.tech/learning-center/x-forwarded-for-ip-apache-web-server/ to set it up.
What wasn’t clear to me is that you need to add the mod_remoteip module on the backend server.
If you’re using mod_proxy or similar the X-Forwarded-For header is added automatically.
The mod_remoteip replaces the client IP in the headers with the value of the (first) IP in X-Forwarded-For when it matches one of the trusted IP’s (set in RemoteIPInternalProxy or RemoteIPTrustedProxy).
HTH
Bram
From: Niranjan Rao <nhrdls@xxxxxxxxx>
Sent: Tuesday, 5 January 2021 19:50
To: users@xxxxxxxxxxxxxxxx
Subject: Remote ip address as a header
Greetings,
Server version: Apache/2.4.29 (Ubuntu)
I am trying to forward remote ip address to my backend server. Visit to backend server involves multiple hops between various load balancers until ip address is used. We tried following in the config file to set the X-REQUEST-IP address header to carry it forward from the entry point, but not seeing the header set.
Header set X-REQUEST-IP %{REMOTE_ADDR}s
Is this the right way to do it?
Regards,
Niranjan
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