Dear All I have this rule : iptables -A INPUT -i eth0 -m limit --limit 5/m --limit-burst 5 -j ACCEPT When I tried to ping my Linux box from a Windows box, : ping -t 192.168.12.1 The reply always come within less than 1 ms. I'm actually expecting many timeouts because iptables would drop my package, but the reply always come within less than 1 ms and no timeouts at all. Am I expecting something wrong ? Thank you all in advance. Andy