Examples

• iptables -A OUTPUT -p 17 –dport 53 -j ACCEPT

• iptables -I INPUT 3 -p 6 –dport 22 -j ACCEPT

• iptables -D FORWARD -p 1 –icmp-type 8 -j LOG

• iptables -A FORWARD -i ipsec+ -j VPNChain

• iptables -t nat -L POSTROUTING -v

• iptables -t nat -I PREROUTING 1 -s $LAN -p 6 –dport 80 -j REDIRECT –to-ports 3128

• iptables -A FORWARD -d $LAN -p 6 –dport 1024:65535 -m state –state RELATED,ESTABLISHED -j ACCEPT

Notes: