Hide Internal IP Adresss From Internet
 

Hi , I'm using squid proxy, in a CentOS Linux, today i've entered to the whatismyipaddress website, and it's shows my internal Ip address, i want to hide it. I'm thinking if using NAT it could be possible. But i want to know it this is made in squid.conf or Iptables, and if it could help me to hide mi internal IP. Thanks for any help

iptables will hide your internal ip adress with NAT

Thanks Agrouf , i was looking information about enable NAT on Iptables, and many howto's says

echo 1 > /proc/sys/net/ipv4/ip_forward

but when i do this, linux says

-bash: /proc/sys/net/ipv4/ipforward: No such file or directory

but in the /proc/sys/net/ipv4/ directory its found the ipforward...program?? , i dont unndestand what this line do. could you help me please??

Did you do it as root?
Did you confuse ipforward with ip_forward?

FYI, this line is allowing the server to forward requests

yes, ja ja, it was ip_forward (you should have a category for very_newbie or very_stupid members only for me), thanks , just another question , if i do

iptable -t nat -A POSTROUTING -o eth0 -j MASQUERADE

must i do to incoming packets from etho, which has static IP. I can't understand this. thanks again

whatismyip isn't just reading the X Forwarded For header Squid adds?

http://www.grc.com/x/ne.dll?rh0dk2du

Not sure if that URL will work but if it does, have a look there to see exactly what you're browser is saying about you and what it all means :) Squid has an option to turn off the forwarded for header so that might be your ticket.