Date: Tue, 10 Jul 2001 15:50:06 -0300 (ART) From: Fernando Gleiser <fgleiser@cactus.fi.uba.ar> To: Arcady Genkin <a.genkin@utoronto.ca> Cc: <freebsd-questions@FreeBSD.ORG> Subject: Re: IPF questions Message-ID: <20010710153541.T80992-100000@cactus.fi.uba.ar> In-Reply-To: <r1z66d0zmap.fsf@gnu.cdf.toronto.edu>
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On 10 Jul 2001, Arcady Genkin wrote: > > > Michael, thanks for your reply. > > So, do I want to be blocking those packets? I ges I do, since > 224.0.0.1 has nothing to do with my IP address. Those are reserved class D multicast adresses. In particular, 224.0.0.1 is called the all-hosts group address. If you don't need multicasting, add a "block in quick proto igmp all", and a "block in quick from 224.0.0.0/8 to any" to the top of your ruleset > > I wonder how those packets find their way to me, anyways... I've A probable cause is a broken or misconfigured router. The source addrees is within the netblock of your ISP. > dropped close to a thousand in ten hours. My external subnet is > 24.42.106.0/24. > -- > Arcady Genkin > i=1; while 1, hilb(i); i=i+1; end > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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