Re: Reaching out to Sony NOC, resolving DDoS Issues - Need POC

[Töma Gavrichenkov <ximaera () gmail com>]

Peace,

On Tue, Jan 28, 2020, 4:32 AM Damian Menscher <damian () google com> wrote:

> On Mon, Jan 27, 2020 at 5:10 PM Töma Gavrichenkov <ximaera () gmail com>
> wrote:
>
> > If this endpoint doesn't connect to anything outside of their network,
> > then yes.
> > If it does though, the design of the filter might become more complicated.
>
> Not really... just requires sorting by volume.  Turns out most legitimate
> hosts don't send high-volume syn packets. ;)

This is a good *detection* technique, but you cannot filter by volume in
transit if the set of destinations is large (and random) enough, and you
don't have a time machine.  Not sure if this is the case but might as well
be.

As for the detection of the real source, everything is technically possible
but you need certain bargaining power which a medium-sized (at best) VPN
service probably doesn't have.

--
Töma

>