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Re: [Iot-onboarding] EduRoam for IoT

Mohit Sethi M <mohit.m.sethi@ericsson.com> Wed, 11 December 2019 10:03 UTC

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From: Mohit Sethi M <mohit.m.sethi@ericsson.com>
To: Michael Richardson <mcr@sandelman.ca>, sandoche Balakrichenan <sandoche.balakrichenan@afnic.fr>
CC: "iot-onboarding@ietf.org" <iot-onboarding@ietf.org>, Guillaume Schreiner <schreiner@unistra.fr>
Thread-Topic: [Iot-onboarding] EduRoam for IoT
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Date: Wed, 11 Dec 2019 10:03:27 +0000
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Subject: Re: [Iot-onboarding] EduRoam for IoT
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Hi Michael,

On 12/10/19 5:01 PM, Michael Richardson wrote:


sandoche Balakrichenan <sandoche.balakrichenan@afnic.fr><mailto:sandoche.balakrichenan@afnic.fr> wrote:
    >> I don't think that it is network onboarding, but application onboarding that
    >> is desired.
    >>
    > ==> Application onboarding is for the LoRaWAN scenario.

    > Don't we have the need for network onboarding for other IoT networks?

    > The objective is to come with a generic solution, if possible.

Then, I think that you want a BRSKI based system, if you want to address a
large number of context.  I am skeptical that this can include LoRA.

I would like to understand the reasoning behind this statement.

I believe that EAP is better suited for a large number of contexts:

- There are more than 52 methods to choose from. Depending on the type of credentials, you can choose from: certificates (EAP-TLS), PSK (EAP-PSK or EAP-TLS-PSK that John, Owen, and I plan to work on), one-time-password (EAP-POTP), password (EAP-pwd), SIM cards (EAP-AKA`) and so on. You can even combine different credentials such as certificates for the outer tunnel and passwords inside (EAP-PEAP/EAP-FAST/EAP-TEAP).
- EAP standard has been around for over a decade and is stable.
- Several implementations exist (including a few open source).
- Roaming and federation is natively supported in the EAP architecture. It has been widely deployed and tested (eg. eduroam).
- Can work a variety of lower-layers such as UDP (PANA), IEEE 802.11 (EAPOL), CoAP (with CoAP-EAP: https://tools.ietf.org/html/draft-marin-ace-wg-coap-eap-06)

I gave a cursory look at BRSKI draft the and found references to unauthenticated TLS, TCP, CoAP, HTTP, CDDL. I am certainly not one of those folks who would use the excuse of small devices or limited bandwidth for poor security (see section 9 of RFC 8387 https://tools.ietf.org/html/rfc8387#section-9). However, this seems a bit excessive (at least for Sandoche but probably for many others).

--Mohit



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]               Never tell me the odds!                 | ipv6 mesh networks [
]   Michael Richardson, Sandelman Software Works        |    IoT architect   [
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