Confirm the Packets are Correct:View the packets via tcpdump with the following commands:tcpdump -nAli <iface> port
<port_number> -s 0 | grep 'header_name'or specifically: $ tcpdump -nAli eth0 port 80 -s 0 | grep 'X-'you can also use ack instead of grep to see it in color. Setup Apache Logging:see http://www.techstacks.com/howto/log-client-ip-and-xforwardedfor-ip-in-apache.html |