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Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 - additional security concerns

joel jaeggli <joelja@bogus.com> Thu, 30 July 2020 12:14 UTC

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To: Nick Hilliard <nick@foobar.org>, Lorenzo Colitti <lorenzo@google.com>
Cc: "v6ops@ietf.org" <v6ops@ietf.org>, 6man <ipv6@ietf.org>
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From: joel jaeggli <joelja@bogus.com>
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Date: Thu, 30 Jul 2020 05:14:20 -0700
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Subject: Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 - additional security concerns
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On 7/30/20 04:17, Nick Hilliard wrote:
> Lorenzo Colitti wrote on 30/07/2020 12:06:
>> On Thu, Jul 30, 2020 at 8:01 PM Nick Hilliard <nick@foobar.org
>> <mailto:nick@foobar.org>> wrote:
>>
>>     > Traffic snooping is not very useful (not zero
>>     > utility, but difficult to use well) when all traffic is encrypted, and
>>     > on-link DoS attacks just aren't very useful these days given that many
>>     > devices have a variety of connectivity options.
>>
>>     Surely you're joking?
>>
>> Actually I should say on-link snooping. Defeating on-link snooping
>> doesn't seem very useful when it's possible for an on-path attacker to
>> snoop the traffic at any point between the local link and the destination.
> 
> on-link DoS is a significant security problem for ipv6, all the more so
> due to ND's protocol weaknesses.

The signifcant size of subnets and the mechanics or reserving resources
have since inception created resource consumption threats.

> Nick
> 
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