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Re: [v6ops] [EXTERNAL] Improving ND security

Ted Lemon <mellon@fugue.com> Fri, 31 July 2020 17:22 UTC

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From: Ted Lemon <mellon@fugue.com>
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Date: Fri, 31 Jul 2020 13:21:40 -0400
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Cc: "Pascal Thubert (pthubert)" <pthubert=40cisco.com@dmarc.ietf.org>, v6ops list <v6ops@ietf.org>, 6man <ipv6@ietf.org>
To: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>
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Subject: Re: [v6ops] [EXTERNAL] Improving ND security
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On Jul 31, 2020, at 1:17 PM, Templin (US), Fred L <Fred.L.Templin@boeing.com> wrote:
> Ted, I think SEND would solve the neighbor cache resource exhaustion attack since a NCE is
> only created on receipt of an authentic (SEND-protected) IPv6 ND message.

OK, but an attacker can just generate a bazillion key pairs, right? So it can still exhaust the cache, at the cost of some computation work.

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