[149467] in North American Network Operators' Group
Re: UDP port 80 DDoS attack
daemon@ATHENA.MIT.EDU (Steve Bertrand)
Sun Feb 5 22:09:14 2012
Date: Sun, 05 Feb 2012 22:08:19 -0500
From: Steve Bertrand <steve.bertrand@gmail.com>
To: nanog@nanog.org
In-Reply-To: <CABO8Q6QuoU6=0YfaLH_ZcMHwN-hOcWSJhQ1nZXJEFRiRonsJBA@mail.gmail.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 2012.02.05 20:37, Keegan Holley wrote:
> 2012/2/5 Dobbins, Roland<rdobbins@arbor.net>
>> S/RTBH - as opposed to D/RTBH - doesn't kill the patient. Again, suggest
>> you read the preso.
>>
>
> Source RTBH often falls victim to rapidly changing or spoofed source IP"s.
> It also isn't as widely supported as it should be. I never said DDOS was
> hopeless, there just aren't a wealth of defenses against it.
This is so very easily automated. Even if you don't actually want to
trigger the routes automatically, finding the sources you want to
blackhole is as simple as a monitor port, tcpdump and some basic Perl.
...and as far as this not having been deployed in many ISPs (per your
next message)... their mitigation strategies should be asked up front,
and if they don't have any (or don't know what you speak of), find a new
ISP.
Steve
