Hello all, I am messing around with iptables, trying to learn how it works so that I can build my self a router/firewall and mabey a VPN. Anyway I tried to use a command on my Desktop CentOS3 machine. "iptables -A INPUT -s 127.0.0.1 -p icmp -j DROP" now the command seems to have went through because I didn't get any errors, but when I go to ping 127.0.0.1 I am getting a response and my packet loss is 0%. It should be 100% packet loss. Can anyone tell me what I am doing wrong. I am not trying to do anything yet, just want to learn by exploring. Thanks all. __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail