Hi     Mr.Antony & ALL ,
 
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP.........only with those policies ,
should block the all incomming , outgoing from the machine ?????
This firewall running in my DHCP machne , but when a test with my DHCP clients ..........those machone has taken ips. but this can't happen .....isit ? if i correct where can be tbe problem ?
pls ..............guide me
 
thank u all