dawn@box0:/proc/sys/net/ipv4$ sudo iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination
ACCEPT     0    --  anywhere             anywhere            state RELATED,ESTABLISHED
ACCEPT     0    --  anywhere             anywhere

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
dawn@box0:/proc/sys/net/ipv4$ sudo iptables -L -t nat
Chain PREROUTING (policy ACCEPT)
target     prot opt source               destination

Chain POSTROUTING (policy ACCEPT)
target     prot opt source               destination
MASQUERADE  0    --  anywhere             anywhere
MASQUERADE  0    --  anywhere             anywhere

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination