WANTED: ISPs with DDoS defense solutions
Jason Robertson
jason at ifuture.com
Wed Aug 6 02:58:40 UTC 2003
They have existed in the past it was how many an irc server was
hacked.. It's just not easy to accomplish but there are many hacker
tools to do this still available, some with better capabilities at this
then others.
Also you could have 2 ip addresses on the same host different
interfaces eg 10.0.0.2 and 10.0.0.3, and use 10.0.0.2 and spoof
10.0.0.3 as the source, and since you can listen to both interfaces,
you can determine if it arrived on the wrong interface.
jason
On 5 Aug 2003 at 21:31, Barney Wolff wrote:
>
> On Wed, Aug 06, 2003 at 12:58:19AM +0000, Paul Vixie wrote:
> >
> > could someone here who can write win32 apps, and someone else who can
> > write cocoa apps, please volunteer short executables that will try to
> > spoof a few packets through some well known server, and then report as
> > to whether the current computer/firewall/cablemodem/isp/core permitted
> > this or not? isc would be happy to host the server component of this,
> > as long as source code for the executables is available under a bsd
> > style copyright, and the executables are released without any fee.
>
> How would the spoofing program, or its user, be able to tell if
> it was successful? Unless I'm very confused, the definition of
> spoofing is that the return packets aren't going to come back to you.
>
> I can imagine a packet format where the real source address was in the
> data, but with no authentication this would itself be subject to abuse.
> You'd need a little protocol:
>
> Volunteer Server
> real-source-->server
> <--back to real source with ip to fake, cookie
> fake-source-->server with cookie
> <--back to real source with result as a courtesy
>
> Doing this from behind a NAT would be difficult.
>
> --
> Barney Wolff http://www.databus.com/bwresume.pdf
> I'm available by contract or FT, in the NYC metro area or via the 'Net.
>
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