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 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<mailto: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<mailto: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 E-MAIL CONFIDENTIALITY NOTICE: The contents of this e-mail message and any attachments are intended solely for the addressee(s) and may contain confidential and/or legally privileged information. If you are not the intended recipient of this message or if this message has been addressed to you in error, please immediately alert the sender by reply e-mail and then delete this message and any attachments. If you are not the intended recipient, you are notified that any use, dissemination, distribution, copying, or storage of this message or any attachment is strictly prohibited.