iptables -L
Chain INPUT (policy DROP)
target     prot opt source               destination
ACCEPT     all  --  anywhere             anywhere
REJECT     tcp  --  please.read.http.proxyscan.freenode.net  anywhere            reject-with icmp-port-unreachable
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED

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

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