full-disclosure - Re: Ubisoft DDoS

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date: Tue, 9 Mar 2010 21:56:14 +0100
From: Christian Sciberras <uuf6429@...il.com>
To: Michal <michal@...ic.co.uk>
Cc: full-disclosure@...ts.grok.org.uk
Subject: Re: Ubisoft DDoS

Perhaps Cisco xt 5650a?

Also, 6500 series are actually switches, not routers. ;-)

Cheers.

On Tue, Mar 9, 2010 at 4:24 PM, Michal <michal@...ic.co.uk> wrote:

> On 09/03/2010 15:12, Valdis.Kletnieks@...edu wrote:
> > On Tue, 09 Mar 2010 15:27:02 +0100, Adrenalin said:
> >> I'm just wondering, even if it's under DDoS, isn't it as easy to block
> as to
> >> collect the list of IP that send too much data, and just block them on
> the
> >> upper level ISP ?
> >
> > You *do* realize that a *small* botnet these days is 75,000 machines, and
> > there's a estimated 140 million compromised zombie boxes out there?
> There's
> > very few boxes that can handle an inbound ACL of 75K entries sanely -
> usually
> > what ends up happening is the upstream drops all traffic *to* the target
> node
> > just so all the *other* boxes at the site still get some bandwidth.
> >
> > And "sending too much data" is hard to quantify - if you have enough
> bots,
> > you can thoroughly DDoS a site using far *less* bandwidth per host than a
> > normal user does.  If the site was designed to handle 10,000 clients each
> > sending 5 packets per second for 10 seconds during a login at game start,
> > it will likely fall over if you throw 100,000 bots at it, each sending
> > 4 packets a second continuously...
> >
>
>
> I've worked at huge online better company and they had network devices
> that worked to stop DDoS as we got hit quite a bit. I have to say they
> managed quite well, often we would only notice because we regularly
> checked the graphs over 24 hours periods. Other times the attacks had
> some successes but they worked well. Can't remember what they where
> called...think it was a company that ended up being bought by Cisco,
> though we did have cards in the 6500 routers to also help out with DDOS.
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/
>

Content of type "text/html" skipped

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/