-P INPUT ACCEPT
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-A INPUT ! -s 87.27.77.107/32 -p tcp -m tcp --dport 21 -j DROP
-A INPUT -i eth0 -p udp -j DROP
-A OUTPUT -p udp -j DROP

iptables -A INPUT -p udp --sport 53 -j ACCEPT
iptables -A INPUT -p udp --dport 53 -j ACCEPT
iptables -A OUTPUT -p udp --sport 53 -j ACCEPT
iptables -A OUTPUT -p udp --dport 53 -j ACCEPT

iptables -A INPUT -p tcp --sport 53 -j ACCEPT
iptables -A INPUT -p tcp --dport 53 -j ACCEPT
iptables -A OUTPUT -p tcp --sport 53 -j ACCEPT
iptables -A OUTPUT -p tcp --dport 53 -j ACCEPT

# host google.it
;; connection timed out; trying next origin