Re: [v6ops] [EXTERNAL] Re: Improving ND security
Fernando Gont <fernando@gont.com.ar> Mon, 03 August 2020 18:53 UTC
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To: "Templin (US), Fred L" <Fred.L.Templin@boeing.com>, "Pascal Thubert (pthubert)" <pthubert@cisco.com>
Cc: v6ops list <v6ops@ietf.org>, 6man <ipv6@ietf.org>
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From: Fernando Gont <fernando@gont.com.ar>
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Date: Mon, 03 Aug 2020 15:52:35 -0300
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Subject: Re: [v6ops] [EXTERNAL] Re: Improving ND security
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Hi, Fred, On 3/8/20 13:45, Templin (US), Fred L wrote: [....] >> This message was sent from outside of Boeing. Please do not click links or open attachments unless you recognize the sender and >> know that the content is safe. >> On 3/8/20 11:22, Templin (US), Fred L wrote: >>> Here’s another think about SEND. RFC3971 SEND says that it works in >>> conjunction with Cryptographically Generated addresses (CGA) per RFC3972. But, CGAs are >>> cumbersome to work with as the source and destination addresses of IPv6 packets, >>> and SEND hints that it can be used without CGA but does not tell how to do so. >> >> Of the top of my head, CGAs are a core part of send. > > That is fine; we can accommodate CGAs in OMNI, cumbersome as they are. > I have this on my TODO list for after the adoption call. Why "cumbersome"? >>> But then, RFC4380 offers a “poor-man’s” alternative to SEND/CGA. It >>> places a message authentication code in the encapsulation headers of IPv6 ND messages so >>> that the messages can pass a rudimentary authentication check. >> >> You mean the Teredo spec? If so, I don't think it includes any sort of >> poor-man's SEND-CGA. > > It provides for message authentication, But what's special about SEND/CGAs is that they tie the address to a key... > and it is widely-deployed which suggests > to me that the vendors who support it believe it is secure. I'm sure others probably know better, but... I think Teredo is mostly MS + Miredo. (when it comes to implementation) And Re: deployment, IIRC Teredo has been phased out. > So, if it is secure enough for RFC4380, then shouldn't it also be secure enough for OMNI? I believe Auth in Teredo is a totally different thing from SEND/CGAs. Regarding OMIN, I Haven read the draft/spec, yet... >>> So someone with >>> security experience please help me out here – is RFC4380 authentication an acceptably >>> secure replacement for SEND/CGA that might be easier to work with and less >>> cumbersome? >> >> Nope. Tee point of CGAs is that they allow you to prove address >> ownership. There's nothing in RFC4380 that provides the same or similar >> functionality. > > Why do we have to prove address ownership Well, that's one of the goals of SEND/CGAs. :-) > and use a whacky address format like CGA? The *address format* is not really whacky. At the end of the day, it's a random number, with the specific property that it's part of the hash of a public key. looking at a CGA, you probably wouldn't be able to tell CGA from RFC7217. > There is nothing in the OMNI spec that needs or wants CGAs in any fashion > unless they are absolutely required for security. Isn't it enough to prove message > authentication using the mechanisms of RFC4380 without having to accommodate > the excess baggage of CGAs?? Both are different things. One thing is to authenticate the contents of a message. And a different one is to be able to tell that one specific host is "authorized" to use one specific address... -- Fernando Gont e-mail: fernando@gont.com.ar || fgont@si6networks.com PGP Fingerprint: 7809 84F5 322E 45C7 F1C9 3945 96EE A9EF D076 FFF1
- [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