Hey scty Library, > 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. Oops! I forgot about that. The LinWiz iptables wizards cannot help you, a router/firewall/VPN application is too complicated for them. If you do not care about reinventing the wheel, then proceed with your learning experience. If you just want a router/firewall/VPN, look at Smoothwall. A mountain of effort and expertise has been put into that dedicated firewall distribution, and I suspect there is NO WAY anything you could do on your own could come close. But if your purpose is to have a learning experience, then you are on the right track. Rick On Thu, 12 Aug 2004, scty Library wrote: > 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.