Hello, I set my IPTABLES policy to clear all rules and then drop everything before defining a policy. I suspect this is the default procedure everyone uses from the looks of the web. Anwyay, when I run iptables -L -n the first line reads: target prot opt source destination ACCEPT all -- 0.0.0.0/0 0.0.0.0/0 RULES -------- --- ------ RULES -------- --- ------ Doing an nmap scan on the box only shows the open ports I specified in the ruleset. This is good. However, the Accept all above in the first line has me a little confused. What is happening here? thanks # Reset the default policy echo Resetting default policy! $IPT --policy INPUT ACCEPT $IPT --policy OUTPUT ACCEPT echo OK echo Allowing all loopback traffic! # Unlimited traffic on the loopback interface $IPT -A INPUT -i lo -j ACCEPT $IPT -A OUTPUT -o lo -j ACCEPT echo OK echo Setting default policy to Drop all incoming and allow all outgoing! # Set the default policy to drop $IPT --policy INPUT DROP $IPT --policy OUTPUT ACCEPT echo OK ALLOW RULES START HERE!
