Hello all, i am facing a problem in iptables as follows: i have single nic which ip is eth0= x.x.x.x(public_ip) alias is eth0:1=y.y.y.y( private_ip) the proxy works when ip of server and port 3128 at lan connection is configured at client side(windows os). But doesn't work without that whenever i flow traffic to proxy server, again i have used ip tables as: iptables -A PREROUTING -t nat -p tcp --dport 80 -i eth0 -j REDIRECT 3128 with above it doesn't work then i tried following iptables -A PREROUTING -t nat -p tcp --dport 80 -i eth0 -j DNAT $public_ip or $private_ip:3128 again the same result. client pc and server is connect at same switch. and clients have private ip where as server has public as well as private ip. any help will be appreciated. thanks in advance. john --------------------------------- Start your day with Yahoo! - make it your home page