North American Network Operators Group

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Re: unexpected generousity

  • From: Sean Donelan
  • Date: Wed Nov 15 03:05:34 2000

I guess its been long enough since the last time that folks have
gotten lax with their filters.

Filtering default, loopback, etc should be in every peer's BGP
configuration whether you trust them or not.  Who do you blame,
the fool who announces default to the world, or the world for
listening to it.

Every router I know has enough memory and processing power to filter
the basic (updated) martian list.  This was a preventable accident.

On Tue, 14 November 2000, Randy Bush wrote:
> what am i misunderstanding here
>>sh ip bg
> BGP routing table entry for, version 27074
> Paths: (1 available, best #1)
>   Not advertised to any peer
>   3333 5597
> from (
>       Origin IGP, localpref 100, valid, external, best