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Re: DDoS attacks, spoofed source addresses and adjusted TTLs
- From: Christopher L. Morrow
- Date: Wed Aug 03 17:25:42 2005
On Wed, 3 Aug 2005, Mike Tancsa wrote:
> At 04:55 PM 03/08/2005, Christopher L. Morrow wrote:
> > > hops away, the TTL of the packet when it got to me was 56). Yes, I know
> > > those could be adjusted in theory to mask multiple sources, but in practice
> > > has anyone seen that ?
> >
> >what exactly was the question?
>
> You answered it mostly-- what do people see in the real world-- plain jane
oh phew :)
> dropped before they leave my network). Have that many networks implemented
> RPF as to make spoofed addresses moot ?
probably not :( reference the MIT spoofer project:
paper ->
http://www.mit.edu/~rbeverly/papers/spoofer-sruit05.html
nanog preso ->
http://www.nanog.org/mtg-0505/beverly.html
project-homepage: http://spoofer.csail.mit.edu.
probably simpler to just get bots than spoof.
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