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BlackPearl ~ # iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
ACCEPT     icmp --  anywhere             anywhere
DROP       tcp  --  84.21.30.45          anywhere
ACCEPT     icmp --  192.168.0.1          anywhere
ACCEPT     icmp --  localhost            anywhere
DROP       icmp --  anywhere             anywhere

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination
BlackPearl ~ # iptables -S
-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-A INPUT -p icmp -j ACCEPT
-A INPUT -s 84.21.30.45/32 -p tcp -j DROP
-A INPUT -s 192.168.0.1/32 -p icmp -j ACCEPT
-A INPUT -s 127.0.0.1/32 -p icmp -j ACCEPT
-A INPUT -p icmp -j DROP