Date: Thu, 9 Aug 2001 20:51:56 -0700 (PDT) From: Yu-Shun Wang <yushunwa@isi.edu> To: Warner Losh <imp@harmony.village.org> Cc: Jonathan Chen <jon@FreeBSD.ORG>, <net@FreeBSD.ORG>, <hackers@FreeBSD.ORG> Subject: Re: forwarding broadcast Message-ID: <20010809204505.Q43632-100000@amc.isi.edu> In-Reply-To: <200108100041.f7A0fP132516@harmony.village.org>
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Hi,
Sorry for not making it clear. I believe RFC 2644
actually suggested that routers MUST default to
disabling directed broadcast except explicitly
configured to do so. But I guess one can never
be too careful. :-)
yushun.
____________________________________________________________________________
Yu-Shun Wang <yushunwa@isi.edu> Information Sciences Institute
University of Southern California
On Thu, 9 Aug 2001, Warner Losh wrote:
> In message <20010809102555.Y42772-100000@amc.isi.edu> Yu-Shun Wang writes:
> : I think it's specified in RFC 2644. It might be useful
> : to site it in the comments of the code.
>
> There were several incidents in the early days of the internet when
> this functionality was in place that caused all kinds of problems.
> Look at the trouble that Jordan got into in 1983 (search the RISKS
> archives) when he send a broadcast to all (which sent the wall to the
> entire internet at the time). While this wasn't exactly a network
> level broadcast, consider carefully the ramifications.
>
> There are many cases where could be useful turns into a security
> nightmare, so I'd be extremely reluctant to include this patch...
>
> Warner
>
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