From: Jose Maria Lopez Hernandez (jkerouac@bgsec.com)
Date: Tue May 10 2005 - 04:44:08 EDT
El vie, 06-05-2005 a las 09:44 +0200, Julian Totzek escribió:
> Hi group,
>
> within a pentest we trying to offer the possibility of a DDos Foold for our customers. I know there are many tools to do a flood from a single PC, but all of these tools just send as many syn's as the can. Does anybody know a tool where I'm able to limit the bandwidth? I don’t want to get a bandwidth overload, I just want to show that the server is not able to handle all the syn packets.
>
> An other question is from where would I start such a attack? We only have a 2Mbit line here in the office, so if I need to flood a 10Mbit line there will not be enough packets to do this, right? Maybe there is a provider out there who already offers this service!
>
> The third question is what will be the side effects if I send packets with spoofed sources? As you all know I don't a answer to my packets, but would it be a DDos to all spoofed sources then? How can you ensure that only the main target is getting flooded?
>
>
> Best regards
>
> Julian Totzek
>
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A good way to simulate a Ddos attack, and above all if you care about
an overwhelming amount of SYN connections, is to install a P2P client
in the target machine. You just put a lot (30 or 40) of the most popular
files in the queue, configure the P2P to have a lot of sources for each
file, and you are done... thousands of machines will make connections
to you and from you. It's a poor man Ddos tool.
I've been working a lot to block the P2P's in the enterprise, and now
I have found they are useful for something. That's odd...
Regards.
--
Jose Maria Lopez Hernandez
Director Tecnico de bgSEC
jkerouac@bgsec.com
bgSEC Seguridad y Consultoria de Sistemas
http://www.bgsec.com
ESPAÑA
The only people for me are the mad ones -- the ones who are mad to live,
mad to talk, mad to be saved, desirous of everything at the same time,
the ones who never yawn or say a commonplace thing, but burn, burn, burn
like fabulous yellow Roman candles.
-- Jack Kerouac, "On the Road"
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