LinuxQuestions.org - Apache reverse proxy, header issue

Hey all,

I am a Apache noob. With that out of the way, I'm trying to set up a relatively simple reverse proxy setup using Apache. I need it to do SSL termination before sending traffic for our website on. I actually have that part working.

The problem is, the system listening for the traffic behind the Apache system is only showing the IP address of the proxy, not of the actual client. I've been trying to get Apache to use the X-Forwaded-For header, but it just will not work for me. The listening system is already configured to look for the X-Forwarded-For header, and is working properly in the existing setup (which is hitting EoL soon and needs to be replaced, which more or less lead us here).

So, I first tried setting up Apache to use the RequestHeader set up, from an example I found through Google:

Code:

 RewriteEngine On

 RewriteRule ^(.*) - [E=CLIENT_IP:%{REMOTE_ADDR},L]

 RequestHeader set X-Forwarded-For %{CLIENT_IP}e

No change there, proxy IP still shows up to the backend system.

So, tried to simplify it:

Code:

RequestHeader set X-Forwarded-For %{REMOTE_IP}e

Still nothing.

I found some references to a product called RPAF. Downloaded and set that up. Created a file called rpaf.conf in the /etc/httpd/conf.d folder to look like that:

Code:

LoadModule rpaf_module modules/mod_rpaf-2.0.so

RPAFenable On

RPAFheader X-Forwarded-For

RPAFsethostname On

RPAFproxy_ips 192.168.1.100

Still no workie.

So, I'm stuck. I don't know where else to check, and not being a programmer or web guy really, most of the information I find online is way over my head. Can anyone shed some light on how I can have Apache send along the original IP instead of it's own IP?

The system is a fully updated CentOS 6.3 64-bit system.

Thanks!