nanog mailing list archives

Re: syn flood attacks from NL-based netblocks


From: Töma Gavrichenkov <ximaera () gmail com>
Date: Mon, 19 Aug 2019 22:05:30 +0300

On Mon, Aug 19, 2019, 9:24 PM Florian Brandstetter <florianb () squareflow net>
wrote:

​Load balancing is done on Layer 4 or Layer 3 when routing, so your
ingress connection will have the same hash as the outgoing connection
(unless the source port of the connection changes on the ACK - which it
really should not).


If the hash is symmetric, yes.  No wonder topology issues would have more
impact, my point was that there are also other things to look at here.

--
Töma



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