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| /sbin/iptables -F | |
| /sbin/ip6tables -F | |
| ## Remove all current entries | |
| /sbin/iptables -X | |
| /sbin/ip6tables -X | |
| ## Drop inputs | |
| /sbin/iptables -P INPUT DROP | |
| /sbin/ip6tables -P INPUT DROP | |
| ## Drop forwards | |
| /sbin/iptables -P FORWARD DROP | |
| ## Drop XMAS scans and NULL | |
| /sbin/iptables -A INPUT -p tcp --tcp-flags FIN,URG,PSH FIN,URG,PSH -j DROP | |
| /sbin/iptables -A INPUT -p tcp --tcp-flags ALL ALL -j DROP | |
| /sbin/iptables -A INPUT -p tcp --tcp-flags ALL NONE -j DROP | |
| /sbin/iptables -A INPUT -p tcp --tcp-flags SYN,RST SYN,RST -j DROP | |
| ## Allow established connexions | |
| /sbin/iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT | |
| ## Allow local connexions | |
| /sbin/iptables -I INPUT -i lo -j ACCEPT | |
| ## Open some ports | |
| /sbin/iptables -A INPUT -p tcp --dport ssh -j ACCEPT | |
| /sbin/iptables -A INPUT -p tcp --dport 80 -j ACCEPT | |
| exit 0 |
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