All things related to multicast

["David Farmer" <>]

Great Idea, but John Z. is right about the security issues.

But, this is realy more an issues of how and not that you should 
filter them.

So I have no problem recommending that people use something 
like his this to manage the filter list and I might even be willing to 
help make some thing like it happen.

We still need to say you SHOULD filter them and we need it to 
become BCP that networks actually filter them.  How you actually 
filter them is really a local implementation issue.  Although making 
it easy is a good thing.

On 4 Sep 2003 Bill Nickless wrote:

> 
> How about doing something like this for the multicast groups that IANA 
> hasn't yet allocated, or are otherwise unusable for various reasons?
> 
> What I like about it is that it's automated, rather than depending on a 
> human in the loop everywhere to watch for IANA announcements.
> 
> Having only spent about 20-30 seconds thinking about it, I'm not sure 
> whether it's possible to configure popular routers to black-hole traffic 
> destined for groups that are in a table populated by BGP.  Maybe an 
> inspiration will strike later?
> 
> ---------- Forwarded message ----------
> Date: Thu, 4 Sep 2003 11:56:36 -0500 (CDT)
> From: Rob Thomas 
> <>
> To: Christopher L. Morrow 
> <>
> Cc: NANOG 
> <>
> Subject: Re: What were we saying about edge filtering?
> 
> 
> ] I'm going to take a stab at: The next 69.0.0.0/8 release? Certainly there
> ] was some lesson learned from this, no?
> 
> Yep, and the lesson is:  Lots of folks do a poor job of network
> management.  :(
> 
> Keeping up with the bogons can be automated, see:
> 
>    <http://www.cymru.com/BGP/bogon-rs.html>
> 
> -- 
> Rob Thomas
> http://www.cymru.com
> ASSERT(coffee != empty);
> 
> 
> 


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