orbital@orbital-laptop:~$ sudo iptables-save -c
# Generated by iptables-save v1.4.10 on Sat Jun 2 14:12:44 2012
*mangle
:PREROUTING ACCEPT [10:761]
:INPUT ACCEPT [10:761]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [187:31884]
:POSTROUTING ACCEPT [10:761]
COMMIT
# Completed on Sat Jun 2 14:12:44 2012
# Generated by iptables-save v1.4.10 on Sat Jun 2 14:12:44 2012
*nat
:PREROUTING ACCEPT [0:0]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [64:9228]
:POSTROUTING ACCEPT [0:0]
[0:0] -A POSTROUTING -o eth0 -j MASQUERADE
COMMIT
# Completed on Sat Jun 2 14:12:44 2012
# Generated by iptables-save v1.4.10 on Sat Jun 2 14:12:44 2012
*filter
:INPUT DROP [0:0]
:FORWARD DROP [0:0]
:OUTPUT DROP [172:25493]
:bad_packets - [0:0]
:icmp_p - [0:0]
:tcp_p - [0:0]
:udp_p - [0:0]
[10:761] -A INPUT -p tcp -j bad_packets
[0:0] -A INPUT -i br0 -j ACCEPT
[10:761] -A INPUT -i lo -j ACCEPT
[0:0] -A INPUT -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
[0:0] -A INPUT -i eth0 -p tcp -j tcp_p
[0:0] -A INPUT -i eth0 -p udp -j udp_p
[0:0] -A INPUT -i eth0 -p icmp -j icmp_p
[0:0] -A FORWARD -p tcp -j bad_packets
[0:0] -A FORWARD -i br0 -j ACCEPT
[0:0] -A FORWARD -i lo -j ACCEPT
[0:0] -A FORWARD -i eth0 -m state --state RELATED,ESTABLISHED -j ACCEPT
[148:29486] -A OUTPUT -p tcp -j bad_packets
[0:0] -A OUTPUT -o eth0 -j ACCEPT
[0:0] -A OUTPUT -o br0 -j ACCEPT
[10:761] -A OUTPUT -o lo -j ACCEPT
[0:0] -A bad_packets -p tcp -m tcp --tcp-flags SYN,ACK SYN,ACK -m state --state NEW -j REJECT --reject-with tcp-reset
[5:5630] -A bad_packets -p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -m state --state NEW -j LOG --log-prefix "New not syn:"
[5:5630] -A bad_packets -p tcp -m tcp ! --tcp-flags FIN,SYN,RST,ACK SYN -m state --state NEW -j DROP
[0:0] -A icmp_p -p icmp -m icmp --icmp-type 8 -j ACCEPT
[0:0] -A icmp_p -p icmp -m icmp --icmp-type 11 -j ACCEPT
[0:0] -A icmp_p -p icmp -j DROP
[0:0] -A tcp_p -p tcp -j DROP
[0:0] -A udp_p -p udp -j DROP
COMMIT
# Completed on Sat Jun 2 14:12:44 2012