Hello, My iptables config file is as follows : # Generated by iptables-save v1.2.9 on Fri Jan 7 20:56:35 2000 *nat :OUTPUT ACCEPT [0:0] :PREROUTING ACCEPT [0:0] :POSTROUTING ACCEPT [0:0] -A POSTROUTING -o eth0 -j MASQUERADE COMMIT # Completed on Fri Jan 7 20:56:35 2000 # Generated by iptables-save v1.2.9 on Fri Jan 7 20:56:35 2000 *mangle :PREROUTING ACCEPT [1024:195745] :INPUT ACCEPT [1019:194076] :FORWARD ACCEPT [2:144] :OUTPUT ACCEPT [1000:192114] :POSTROUTING ACCEPT [999:192086] COMMIT # Completed on Fri Jan 7 20:56:35 2000 # Generated by iptables-save v1.2.9 on Fri Jan 7 20:56:35 2000 *filter :FORWARD ACCEPT [0:0] :INPUT DROP [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -j ACCEPT -A INPUT -s 127.0.0.1 -j ACCEPT -A INPUT -p tcp -m tcp -i eth1 --dport 3128 --sport 80 -j ACCEPT -A INPUT -p udp -m udp -i eth1 --dport 3128 --sport 80 -j ACCEPT -A INPUT -s 62.0.0.0/255.0.0.0 -i eth0 -j REJECT -A INPUT -p tcp -m tcp -s 217.81.0.0/255.255.0.0 -i eth0 -j REJECT -A INPUT -i eth0 -j DROP -A INPUT -p tcp -m tcp -i eth1 --sport 80 -j DROP -A INPUT -m state -i eth1 --state ESTABLISHED,RELATED -j ACCEPT -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT -A FORWARD -p tcp -i eth1 -o eth0 --dport 25 --sport 1024: -j ACCEPT --syn -A FORWARD -p tcp -i eth1 -o eth0 --dport 110 --sport 1024: -j ACCEPT --syn -A FORWARD -p tcp -i eth1 -o eth0 --dport 1863 --sport 1024: -j ACCEPT --syn -A FORWARD -p tcp -i eth1 -o eth0 --dport 5050 --sport 1024: -j ACCEPT --syn -A OUTPUT -p udp --dport 53 --sport 1024: -j ACCEPT -A OUTPUT -p tcp -m owner -o eth0 --dport 80 --sport 1024: --uid-owner squid -j ACCEPT --syn COMMIT # Completed on Fri Jan 7 20:56:35 2000 mails part is working MSN is working. I am able to browse without any proxy settings. Which I do not want. So I guess the traffic is not being redirected properly. I think I need to redirect all port 80 traffic to port 3128. Though I am not sure. Thanks for all the help so far. Varun