Hi Linda:

I remember that adding text in Security Considerations about the security risks 
would allow the reader to understand them and to use case 2 at its own risk. 

I think that was also a comment in the past and that is why we added section 
9.1 and 9.2. 

In any case, I do not see any problem to include additional text in section 9.2 
where the case 2 can be used (somehow this text is scattered in the document 
right now). For example, we mention:

"Alternatively, Case 2 allows lighter NSFs (no IKEv2 implementation),
   which benefits the deployment in constrained NSFs.”

Another point to add is  about secure management channel. Our assumption is you 
are using NETCONF, as a consequence TLS, or SSH security association is in 
place between the Controller and the NSFs, but it is better, as you mention, 
explicitly state it.

Best Regards.

> El 18 oct 2018, a las 23:18, Linda Dunbar <[email protected]> escribió:
> 
> Gabriel and Rafa, 
>  
> I remember in IETF102 I2NSF session, you agreed to add some description on 
> how/where your Option 2 can be used ( i.e. Using Controller to assist the 
> IPsec key computation and pass the SA attributes together with its IPsec 
> session key to the pair-wise Nodes via a secure management channel), such as 
> -        for some special secure environment (e.g. in one physically isolated 
> data center) or
> -        some resource constrained IoT deployment that can tolerance some 
> risks.
>  
> It is important to document the risks associated with the option, so that 
> users can make the informed decision.
>  
>  
> Thanks, Linda Dunbar

-------------------------------------------------------
Rafa Marin-Lopez, PhD
Dept. Information and Communications Engineering (DIIC)
Faculty of Computer Science-University of Murcia
30100 Murcia - Spain
Telf: +34868888501 Fax: +34868884151 e-mail: [email protected]
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