[74508] in North American Network Operators' Group
Re: Blackhole Routes
daemon@ATHENA.MIT.EDU (Suresh Ramasubramanian)
Thu Sep 30 02:59:45 2004
Date: Thu, 30 Sep 2004 12:30:40 +0530
From: Suresh Ramasubramanian <suresh@outblaze.com>
To: Abhishek Verma <abhishekv.verma@gmail.com>
Cc: nanog@merit.edu
In-Reply-To: <ce8d903304092923511c2adeb0@mail.gmail.com>
Errors-To: owner-nanog-outgoing@merit.edu
Abhishek Verma wrote:
>
> There are ways to add static routes that can be blackholed. I can
> understand the utility of such routes if those are installed in my
> forwarding table. What bewilders me is why would anyone want to
> advertise "blackhole" routes using say, BGP?
>
> Is it only to prevent some sort of DoS attacks or are there other uses
> also of advertising black hole routes?
>
Look at the way the MAPS RBL started.
Anybody else who trusts your judgement of what traffic to blackhole can
take a bgp feed of the blackhole routes and use it.
