1-P INPUT DROP 2-P FORWARD DROP 3-P OUTPUT DROP 4-A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 5-A INPUT -i lo -j ACCEPT 6-A INPUT -p icmp -j ACCEPT 7-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT 8-A INPUT -d 224.0.0.251/32 -p udp -m udp --dport 5353 -j ACCEPT 9-A OUTPUT -m state --state NEW,RELATED,ESTABLISHED -j ACCEPT 10-A OUTPUT -o lo -j ACCEPT 11