s ipchains blokiram sambata taka ..

 ipchains -A input -p tcp -j DENY --destination-port 137:139
-i eth0
 ipchains -A input -p udp -j DENY --destination-port 137:139
-i eth0
 ipchains -A output -p tcp -j DENY --destination-port 137:139
-i eth0
 ipchains -A output -p udp -j DENY --destination-port 137:139
-i eth0

Kak ste stane tova iptables ?

iptables -A INPUT -i eth0 --dport 137:139 -j DROP

Прощавай, в бързината съм забравил:

iptables -A INPUT -i eth0 -p TCP --dport 137:139 -j DROP
iptables -A INPUT -i eth0 -p UDP --dport 137:139 -j DROP

Това е достатъчно.