On Sun, Aug 8, 2021 at 02:27 Töma Gavrichenkov <ximaera@xxxxxxxxx> wrote:
Using anycast as a
mitigation to DDoS doesn't seem like a great idea considering the
problems being discussed here.It's quite the opposite: using anycast to mitigate DDoS is the only proper way to do it, because, basically, DDoS traffic, generated in thousands of locations on the globe, cannot be handled when accumulated in one place.Either you have multiple traffic termination points on the net (a.k.a. anycast), each as close to some traffic generation point as possible, or you'll end up having capacity overload around your last mile. This is the equation fundamental to the Internet, while the implementation issues discussed here are hardly more than just typical software engineering tasks.
Anycast is only one of several mitigation strategies for DDoS, yes, it is a good one for web type services, it might even be the best for that type of service, especially against large volumetric attacks. However, there are many other types of attacks to protect against and services that need protection and anycast is a lousy mitigation strategy for many of them, especially for client networks or peer to peer services.
While I agree with you, anycast is an important capability in the Internet architecture, nevertheless it has many limitations, and is not the panacea you claim it to be, even for DDoS.
Furthermore, I’m not sure what you or the original reporter of this problem expect the IETF to do to fix the problem that was reported. I’ll remind you of the well worn trope, “the IETF is not the protocol police.” Any fix to the problem reported is squarely in hands of Linux developers, not the IETF.
Thanks.
===============================================
David Farmer Email:farmer@xxxxxxx
Networking & Telecommunication Services
Office of Information Technology
University of Minnesota
2218 University Ave SE Phone: 612-626-0815
Minneapolis, MN 55414-3029 Cell: 612-812-9952
===============================================
David Farmer Email:farmer@xxxxxxx
Networking & Telecommunication Services
Office of Information Technology
University of Minnesota
2218 University Ave SE Phone: 612-626-0815
Minneapolis, MN 55414-3029 Cell: 612-812-9952
===============================================
