$ iptables -nL

Chain INPUT (policy DROP)
target     prot opt source               destination
ACCEPT     0    --  0.0.0.0/0            0.0.0.0/0
DROP       6    --  0.0.0.0/0            0.0.0.0/0            tcp flags:0x3F/0x00
DROP       6    --  0.0.0.0/0            0.0.0.0/0            tcp flags:0x3F/0x3F
DROP       6    --  0.0.0.0/0            0.0.0.0/0            tcp flags:0x29/0x29
DROP       6    --  0.0.0.0/0            0.0.0.0/0            tcp flags:!0x17/0x02 state NEW

Chain FORWARD (policy DROP)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
