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Re: [Tsv-art] [OPSEC] Tsvart last call review of draft-ietf-opsec-ipv6-eh-filtering-06

Gert Doering <gert@space.net> Wed, 05 December 2018 08:52 UTC

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Date: Wed, 05 Dec 2018 09:52:27 +0100
From: Gert Doering <gert@space.net>
To: Christopher Morrow <morrowc.lists@gmail.com>
Cc: Brian E Carpenter <brian.e.carpenter@gmail.com>, heard@pobox.com, tsv-art@ietf.org, opsec wg mailing list <opsec@ietf.org>, ietf <ietf@ietf.org>, draft-ietf-opsec-ipv6-eh-filtering.all@ietf.org
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Subject: Re: [Tsv-art] [OPSEC] Tsvart last call review of draft-ietf-opsec-ipv6-eh-filtering-06
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Hi,

On Tue, Dec 04, 2018 at 10:57:43PM -0500, Christopher Morrow wrote:
> HA! ok. As gert/nick noted ... we have Nx100G links today (at the edge) and
> coming nx400G ... there's just not a reasonable story for "dpi" there. (I
> suppose: "yet" and "without paying the approximate value Coca-Cola
> Companies yearly advertising budget")

Indeed.

Unfortunately, there *is* a story for being able to rate-limit incoming
crap by protocol type - "give me no more than 200 Mbit/s of UDP packets
coming from source port 53".

Which implies that as soon as the evil guys out there find a way to
generate DDoS streams carrying EHs that our border routers will (have to)
apply very strict rate limiting to everything they do not understand.

 - pass TCP
 - rate-limit UDP on well-known reflective attacks port
 - pass rest of UDP
 - rate-limit ICMP
 - rate-limit fragments
 - rate-limit all the rest to something which can never exceed a customer's
   access-link

game over, EH

(We're not doing this today, because as of today, "volume DDoS" comes in
without EHs [except fragment] - but this is just a matter of time)

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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