nanog mailing list archives

Re: Best way to get foreign ISPs to shut down DDoS reflectors?


From: Ca By <cb.list6 () gmail com>
Date: Thu, 23 Apr 2020 15:25:25 -0700

On Thu, Apr 23, 2020 at 3:14 PM Compton, Rich A <Rich.Compton () charter com>
wrote:

Good luck with that.  😊  As Damian Menscher has presented at NANOG, even
if we do an amazing job and shut down 99% of all DDoS reflectors, there
will still be enough bandwidth to generate terabit size attacks.
https://stats.cybergreen.net

I think we need to instead collectively focus on stopping the spoofed
traffic that allows these attacks to be generated in the first place.

-Rich


The bcp38 religion has failed to deliver the promised land for 20 years.

1 spoofer is all you need to trigger all the reflectors.

I do bcp38, i encourage others to as well, but i do not plan on it
unclogging the pipes in my lifetime.

You will get more miles from ACL dropping and policing known bad traffic
(most of udp)



*From: *NANOG Email List <nanog-bounces () nanog org> on behalf of Bottiger <
bottiger10 () gmail com>
*Date: *Thursday, April 23, 2020 at 3:32 PM
*To: *Siyuan Miao <aveline () misaka io>

*Cc: *NANOG list <nanog () nanog org>
*Subject: *Re: Best way to get foreign ISPs to shut down DDoS reflectors?



We are unable to upgrade our bandwidth in those areas. There are no
providers within our budget there at the moment. Surely there must be some
way to get them to respond.



On Thu, Apr 23, 2020 at 2:23 PM Siyuan Miao <aveline () misaka io> wrote:

It won't work.



Get a good DDoS protection and forget about it.



On Fri, Apr 24, 2020 at 5:17 AM Bottiger <bottiger10 () gmail com> wrote:

Is there a guide on how to get foreign ISPs to shut down reflectors used
in DDoS attacks?



I've tried sending emails listed under abuse contacts for their regional
registries. Either there is none listed, the email is full, email does not
exist, or they do not reply. Same results when sending to whatever other
email they have listed.



Example Networks:



CLARO S.A.

Telefonica

China Telecom

Korea Telecom

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