From owner-freebsd-security@FreeBSD.ORG  Wed Feb 25 18:02:43 2015
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Date: Wed, 25 Feb 2015 18:56:01 +0100
From: Andrei <az@azsupport.com>
To: freebsd-security@freebsd.org
Subject: Re: FreeBSD Security Advisory FreeBSD-SA-15:04.igmp (fwd) - ipfw fix?
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On Wed, 25 Feb 2015 18:21:58 +0100
Remko Lodder <remko@FreeBSD.org> wrote:

> 
> This suggests that you can filter the traffic:
> 
> Block incoming IGMP packets by protecting your host/networks with a
> firewall. (Quote from the SA).
> 
> Br,
> Remko
> 

Looks like Captain Obvious here. The question was how exactly to do it?

Kind regards,
Andrei.