Re: [v6ops] [EXTERNAL] Re: Improving ND security
"Templin (US), Fred L" <Fred.L.Templin@boeing.com> Fri, 31 July 2020 22:13 UTC
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From: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>
To: "Pascal Thubert (pthubert)" <pthubert@cisco.com>
CC: Ted Lemon <mellon@fugue.com>, v6ops list <v6ops@ietf.org>, 6man <ipv6@ietf.org>
Thread-Topic: [EXTERNAL] Re: Improving ND security
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Date: Fri, 31 Jul 2020 22:13:05 +0000
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Subject: Re: [v6ops] [EXTERNAL] Re: Improving ND security
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Hi Pascal, see below: A major attack vector is an external attacker sending packets to the 2^64 or so possible addresses in the subnet. [>] Subnet?? As in, an on-link IPv6 prefix? The large NBMA link that I want to use SEND on will not have any of those – link-local only. The attack causes a denial of service at the router that MUST store one packet for one second and multicast a NS lookup, which multiplies the effect. [>] Again, we are talking about different kinds of links; there will not be any sort of multicast explosion on the NBMA link based on a router receiving a SEND-protected IPv6 ND message. The attack is easy to perform from the outside and send offers no protection. [>] For the OMNI NBMA link, the process is based on a Client sending a SEND-protected RS message to exactly one router. The router authenticates the RS before processing it further, which may include returning a unicasted RA. No NCEs are created until the RS has been authenticated, and no multicast storms are initiated. The only clear protection is to know in advance all the addresses present in the network and drop the rest. GRAND offers a way to preset the ND cache which is better than nothing but it offers no guarantee that the router has the full set of addresses I. Cache. In fact the concept of a cache is dated from the days memory was scarce and expensive. This concept is not needed And rather harmful in modern networks. [>] The OMNI routers are not going to require any kind of ND cache presets; they simply establish NCEs upon receipt *and* authentication of good RS messages. Thanks - Fred Regards, Pascal Le 31 juil. 2020 à 19:49, Templin (US), Fred L <Fred.L.Templin@boeing.com<mailto:Fred.L.Templin@boeing.com>> a écrit : Hi Ted, By “NM” I think you mean “Mobile Node?” That’s not really one of the use cases we’re talking about here. Or am I missing something? [>] Or, just call it a (mobile) “Stub-Network” – I think we are talking about the same thing here. In any case, you’re presuming some kind of trust establishment for non-router nodes, right? SEND only talks about trust establishment for routers. And, let’s be frank, doesn’t actually give us enough operational guidance that we would expect what _is_ said to be generally practicable. [>] OK, the specs I have been working dip their toes into the SEND pool but maybe they should be updated to dive in completely? With an adoption call in progress, I don’t know if it would be a good idea to make changes right now but be assured that it will be added to the TODO list – would that be acceptable for now? Thanks - Fred
- [v6ops] I-D Action: draft-ietf-6man-grand-01 - ad… Vasilenko Eduard
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Jen Linkova
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Vasilenko Eduard
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Jen Linkova
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Nick Hilliard
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Lorenzo Colitti
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Nick Hilliard
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … joel jaeggli
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Vasilenko Eduard
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Mark Smith
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Pascal Thubert (pthubert)
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Templin (US), Fred L
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Owen DeLong
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Ted Lemon
- Re: [v6ops] [EXTERNAL] Re: I-D Action: draft-ietf… Templin (US), Fred L
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Bob Hinden
- [v6ops] Improving ND security Ted Lemon
- Re: [v6ops] [EXTERNAL] Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Improving ND security Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Tony Finch
- [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] [EXTERNAL] Improving ND security Templin (US), Fred L
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Vasilenko Eduard
- Re: [v6ops] [EXTERNAL] Improving ND security Ted Lemon
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Ted Lemon
- Re: [v6ops] Improving ND security Templin (US), Fred L
- Re: [v6ops] Improving ND security Ted Lemon
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Improving ND security Fernando Gont
- Re: [v6ops] [EXTERNAL] Improving ND security Bjoern A. Zeeb
- Re: [v6ops] [EXTERNAL] Improving ND security Templin (US), Fred L
- Re: [v6ops] Improving ND security Templin (US), Fred L
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Vasilenko Eduard
- Re: [v6ops] [EXTERNAL] Improving ND security Fernando Gont
- Re: [v6ops] [EXTERNAL] Improving ND security Templin (US), Fred L
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Owen DeLong
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Pascal Thubert (pthubert)
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Templin (US), Fred L
- Re: [v6ops] Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Vasilenko Eduard
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Philip Homburg
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Fernando Gont
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Christian Huitema
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Vasilenko Eduard
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Fernando Gont
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Templin (US), Fred L
- [v6ops] Off topic: Teredo sunset -- Re: [EXTERNAL… Lencse Gábor
- Re: [v6ops] Off topic: Teredo sunset -- Re: [EXTE… Templin (US), Fred L
- Re: [v6ops] Off topic: Teredo sunset -- Re: [EXTE… Joseph Touch
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Michael Richardson
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Michael Richardson
- Re: [v6ops] [EXTERNAL] Re: I-D Action: draft-ietf… Michael Richardson
- Re: [v6ops] [EXTERNAL] Improving ND security Michael Richardson
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Vasilenko Eduard
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Pascal Thubert (pthubert)
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Vasilenko Eduard
- Re: [v6ops] I-D Action: draft-ietf-6man-grand-01 … Mark Smith
- Re: [v6ops] [EXTERNAL] Improving ND security Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Fernando Gont
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Pascal Thubert (pthubert)
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Vasilenko Eduard
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Vasilenko Eduard
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Pascal Thubert (pthubert)
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Pascal Thubert (pthubert)
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Vasilenko Eduard
- Re: [v6ops] [EXTERNAL] Re: Improving ND security Vasilenko Eduard
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Jen Linkova
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Vasilenko Eduard
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Vasilenko Eduard
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Jen Linkova
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Jen Linkova
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Mark Smith
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Philip Homburg
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Ted Lemon
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Bob Hinden
- [v6ops] distributed vs centralized approaches to … Michael Richardson
- Re: [v6ops] distributed vs centralized approaches… Nick Hilliard
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Mark Smith
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Jen Linkova
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Bob Hinden
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Vasilenko Eduard
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Jen Linkova
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Vasilenko Eduard
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Nick Hilliard
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Bob Hinden
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Michael Richardson
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Philip Homburg
- Re: [v6ops] [EXTERNAL] Re: draft-ietf-6man-grand … Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] draft-ietf-6man-grand : sa… Ted Lemon
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Templin (US), Fred L
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Ted Lemon
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Templin (US), Fred L
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Ted Lemon
- Re: [v6ops] [EXTERNAL] Re: draft-ietf-6man-grand … Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] draft-ietf-6man-grand : sa… Ted Lemon
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Warren Kumari
- Re: [v6ops] [EXTERNAL] draft-ietf-6man-grand : sa… Templin (US), Fred L
- Re: [v6ops] [EXTERNAL] draft-ietf-6man-grand : sa… Manfredi (US), Albert E
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Fred Baker
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Ted Lemon
- Re: [v6ops] [EXTERNAL] draft-ietf-6man-grand : sa… Templin (US), Fred L
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Ted Lemon
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Templin (US), Fred L
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Jen Linkova
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Philip Homburg
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Philip Homburg
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Templin (US), Fred L
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Lorenzo Colitti
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Gyan Mishra
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Templin (US), Fred L
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Pascal Thubert (pthubert)
- Re: [v6ops] draft-ietf-6man-grand : saving lookups Templin (US), Fred L