root@butterfly:~# iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination
DROP       all  --  anywhere             anywhere            state INVALID
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED
DROP       tcp  --  anywhere             anywhere            tcp spts:0:65532 option=!2 flags:SYN,RST,ACK/SYN
input_rule  all  --  anywhere             anywhere
ACCEPT     all  --  anywhere             anywhere
ACCEPT     icmp --  anywhere             anywhere
ACCEPT     gre  --  anywhere             anywhere
ACCEPT     udp  --  anywhere             anywhere            udp dpt:1194
REJECT     tcp  --  anywhere             anywhere            reject-with tcp-reset
REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable

Chain FORWARD (policy DROP)
target     prot opt source               destination
DROP       all  --  anywhere             anywhere            state INVALID
TCPMSS     tcp  --  anywhere             anywhere            tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED
forwarding_rule  all  --  anywhere             anywhere
ACCEPT     all  --  anywhere             anywhere
ACCEPT     all  --  anywhere             anywhere

Chain OUTPUT (policy DROP)
target     prot opt source               destination
DROP       all  --  anywhere             anywhere            state INVALID
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED
output_rule  all  --  anywhere             anywhere
ACCEPT     all  --  anywhere             anywhere
REJECT     tcp  --  anywhere             anywhere            reject-with tcp-reset
REJECT     all  --  anywhere             anywhere            reject-with icmp-port-unreachable

Chain forwarding_rule (1 references)
target     prot opt source               destination

Chain input_rule (1 references)
target     prot opt source               destination

Chain output_rule (1 references)
target     prot opt source               destination