From mboxrd@z Thu Jan  1 00:00:00 1970
From: Zoup <Zoup@zoup.org>
Subject: Re: block port 137
Date: Tue, 3 Aug 2004 10:31:06 -0800
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On Monday 02 August 2004 21:07, david Wrote:
> Dear all,
> How to block outgoing traffic over network that using port 137 udp, because
> my isp tell me that my network broadcast virus using port 137 udp, i want
> to make all traffic (port 137) do go outside my network, so i plan to
> blocking that traffic from my gateway.
>
> I already try to do this rules, but not working :
> #iptables -A FORWARD -p udp -s 0/0 --dport 137 -j DROP
>
>
>
>
> Regards,
> David Kandou


you also have to use 
iptables -A FORWARD -p udp --sport 137 -j DROP 

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