Re: [secdir] sec-dir review of draft-ietf-roll-building-routing-reqs-07

Jerald.P.Martocci@jci.com Mon, 21 September 2009 16:02 UTC

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To: Derek Atkins <derek@ihtfp.com>
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Cc: secdir@ietf.org, nicolas.riou@fr.schneider-electric.com, pieter.demil@intec.ugent.be, iesg@ietf.org, roll-chairs@tools.ietf.org, wouter@vooruit.be, Adrian Farrel <Adrian.Farrel@huawei.com>
Subject: Re: [secdir] sec-dir review of draft-ietf-roll-building-routing-reqs-07
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Hi Derek,

As the author of the document, I am trying to describe in this 
requirements ID the flexibility of setting up the security policies (as 
Adrian notes) rather then the application specifics of picking a security 
policy for a given application.  Earlier versions of this ID included this 
information, but was dropped since it was out of scope for the routing 
protocol. 

I have recently been requested to draft an ID for the 6LowAPP that would 
deal specifically with Building Applications at the application layer 
rather than at the routing layer.  Here, I intend to reinject into this 
new ID specificity as to when different security strategies are required. 
I have attached a spreadsheet that describes 5 different security policies 
(rows) that must be configurable for many different types of commercial 
buildings with the varying requirements for each building type (columns). 
I intend to redraft this spreadsheet into a section of the ID. 

I hope this is more of what you're looking for and can accept that I will 
put is into a separate ID.  If you think any of this should be put into 
the existing requirements ID, let me know and I will add it in.

Best Regards,

Jerry Martocci












Adrian Farrel <Adrian.Farrel@huawei.com> 
09/20/2009 05:00 AM
Please respond to
Adrian Farrel <Adrian.Farrel@huawei.com>


To
Derek Atkins <derek@ihtfp.com>om>, iesg@ietf.org, secdir@ietf.org
cc
pieter.demil@intec.ugent.be, nicolas.riou@fr.schneider-electric.com, 
jerald.p.martocci@jci.com, wouter@vooruit.be, roll-chairs@tools.ietf.org
Subject
Re: sec-dir review of draft-ietf-roll-building-routing-reqs-07






Hi Derek,

I very much appreciate your review.

It is important to understand that this document specifies requirements 
that 
must/should/etc be satisfied by a protocol designed by the working group. 
Thus, there is no question of what should be deployed or what should be 
implemented.

That is, the document specifies what must be in the protocol spec. We can 
expect the protocol spec to discuss what must be implemented. And either 
the 
protocol spec or an applicability statement would describe what must be 
deployed.

So, the concerns you raise would be very important in the final protocol 
spec (and I hope the chairs and authors are paying attention), but do not 
seem to me to fit in this document.

Thanks,
Adrian

>> The Security Considerations appear to take into account various
>> requirements for different systems.  What seems to be lacking is
>> direction about how or when to apply various requirements and what
>> it means to the deployment.
>>
>> For example, what would it mean to a deployment if it has
>> authentication versus not having authentication?  Also, it's unclear
>> how these requirements would apply to an implementor.
>>
>> Variable security policies is a good idea, but it requires more
>> guidance because the end user will never understand the ramifications
>> of choosing one policy over another.