iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
DROP       all  --  10.0.0.0/8           anywhere            
DROP       all  --  172.16.0.0/12        anywhere            
DROP       all  --  192.168.0.0/24       anywhere            
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:www 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:https 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:480 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:smtp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssmtp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:imap2 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:imaps 
ACCEPT     udp  --  anywhere             anywhere            udp dpt:8767 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:14534 
ACCEPT     icmp --  anywhere             anywhere            icmp echo-reply 
ACCEPT     icmp --  anywhere             anywhere            icmp destination-unreachable 
ACCEPT     icmp --  anywhere             anywhere            icmp echo-request 
ACCEPT     icmp --  anywhere             anywhere            icmp time-exceeded 
ACCEPT     icmp --  anywhere             anywhere            icmp parameter-problem 

Chain FORWARD (policy DROP)
target     prot opt source               destination         

Chain OUTPUT (policy DROP)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     icmp --  anywhere             anywhere