We have seen a recent trend of attackers "legitimately" purchasing servers to use for attacks. They'll setup a front company, attempt to make the traffic look legitimate, and then launch attacks from their "legitimate" botnet.
Jeff On Wed, Dec 8, 2010 at 10:33 AM, Arturo Servin <arturo.ser...@gmail.com> wrote: > > On 8 Dec 2010, at 13:12, nanog-requ...@nanog.org wrote: > >> Date: Wed, 8 Dec 2010 12:53:51 +0000 >> From: "Dobbins, Roland" <rdobb...@arbor.net> >> Subject: Re: Over a decade of DDOS--any progress yet? >> To: North American Operators' Group <nanog@nanog.org> >> Message-ID: <bf571ad7-1122-407b-b7fa-77b9bbac4...@arbor.net> >> Content-Type: text/plain; charset="us-ascii" >> >> >> On Dec 8, 2010, at 7:28 PM, Arturo Servin wrote: >> >>> One big problem (IMHO) of DDoS is that sources (the host of botnets) >>> may be completely unaware that they are part of a DDoS. I do not mean the >>> bot machine, I mean the ISP connecting those. >> >> The technology exists to detect and classify this attack traffic, and is >> deployed in production networks today. > > Yes, they do exist. But, is people really filtering out attacks or > just watching the attacks going out? > > >> >> And of course, the legitimate owners of the botted hosts are generally >> unaware that their machine is being used for nefarious purposes. >> >>> In the other hand the target of a DDoS cannot do anything to stop to >>> attack besides adding more BW or contacting one by one the whole path of >>> providers to try to minimize the effect. >> >> Actually, there're lots of things they can do. > > Yes, but all of them rely on your upstreams or in mirroring your > content. If 100 Mbps are reaching your input interface of 10Mbps there is not > much that you can do. > >> >>> I know that this has many security concerns, but would it be good a >>> signalling protocol between ISPs to inform the sources of a DDoS attack in >>> order to take semiautomatic actions to rate-limit the traffic as close as >>> the source? Of course that this is more complex that these three or two >>> lines, but I wonder if this has been considerer in the past. >> >> It already exists. > > If you have an URL would be good. I only found a few research papers > on the topic and RSVP documents but nothing really concrete. > > Regards, > -as -- Jeffrey Lyon, Leadership Team jeffrey.l...@blacklotus.net | http://www.blacklotus.net Black Lotus Communications - AS32421 First and Leading in DDoS Protection Solutions
