Hi Mishe Sorry, I don't understand the second question... The first - these scripts were designed to be pasted into the firewall script box. So when executed, the -I means that 1st (DROP) line is moved to the top of the iptables list. I = INSERT AT TOP. Next executed is the ACCEPT line, which is again moved to the top, BEFORE the drop line. So you are partly right in your assumption! A = APPEND (add to the bottom).