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how to block incoming netbios broadcasts using iptables?

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SerfurJ
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Joined: 10 Apr 2004
Posts: 824
Location: Texas

Posted: Wed Mar 09, 2005 7:40 pm Post subject: how to block incoming netbios broadcasts using iptables?

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i'm trying to block incoming netbios broadcasts using iptables. what am i doing wrong here?

Code:

$IPTABLES -A INPUT -p UDP --dport 135:137 -j DROP
$IPTABLES -A INPUT -p UDP --dport 135:137 -s 0/0 -j DROP
$IPTABLES -A INPUT -p UDP --dport 135:137 -s 192.168.0.0/24 -j DROP

this doesn't work either

Code:

$IPTABLES -A INPUT -p UDP -i $INET_IFACE --destination-port 135:139 -j DROP
$IPTABLES -A INPUT -p TCP -i $INET_IFACE --destination-port 135:139 -j DROP

(and yes, i'm new to setting up rules for iptables.)

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SerfurJ
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Joined: 10 Apr 2004
Posts: 824
Location: Texas

Posted: Wed Mar 09, 2005 9:18 pm Post subject:

i figured it out. it was the order. they were after a rule that filtered all packets.

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