Hi, Luis

Thanks a lot for sharing your viewpoints!

Yes, it is possible that the user/device could be defined as pertaining to more 
than one group, depending on the current context. The example that has been 
given in the draft is that, the user group R&D Regular and R&D BYOD may share 
the same set of users that belong to the R&D organization, and differ only in 
the type of clients (firm-issued vs. users' personal ones). By declaring a 
group with common ACLs, are you suggesting to define some kind of hierarchical 
group that bind different subgroups which share common ACLs together? That 
sounds interesting, actually the authors now are considering the change the 
type of the endpoint group ID from uint32 to string (see this PR prepared by 
Med: https://github.com/boucadair/policy-based-network-acl/pull/20/files), I 
think that make it possible for us to declare some hierarchy among different 
groups and indicated by the group-id string.

Best Regards,
Qiufang

From: OPSAWG [mailto:[email protected]] On Behalf Of LUIS MIGUEL 
CONTRERAS MURILLO
Sent: Friday, September 22, 2023 10:37 PM
To: [email protected]; 'Tianran Zhou' 
<[email protected]>; [email protected]
Cc: [email protected]
Subject: Re: [OPSAWG] Working group adoption call for draft-ma-opsawg-ucl-acl-03

Hi all,

Apologies for being late on expressing my view.

I support the adoption of the draft.

After reading it, some question coming to my mind is if the users / devices 
could be defined as pertaining to more than one group. I was thinking on that 
assuming that different groups could have some common ACLs, so if maybe could 
be something interesting to declare a group with common ACLs plus another type 
of group with the differential ACLs. This could be beneficial for instance at 
the time of updating the ACLs which are common (so avoiding to update multiple 
groups instead of only one).

Thanks and apologies again for the delay on answering the poll.

Best regards

Luis

De: OPSAWG <[email protected]<mailto:[email protected]>> En nombre 
de Adrian Farrel
Enviado el: lunes, 11 de septiembre de 2023 22:33
Para: 'Tianran Zhou' 
<[email protected]<mailto:[email protected]>>;
 [email protected]<mailto:[email protected]>
CC: [email protected]<mailto:[email protected]>
Asunto: Re: [OPSAWG] Working group adoption call for draft-ma-opsawg-ucl-acl-03

Hi Tianran,

I think this is a timely piece of work that should be adopted. I commit
to further reviews if it is adopted.

A few minor comments on this version, below. Nothing that needs to be
fixed before adoption.

There is a meta-question: should the schedule model be moved out into
a separate document? It isn't necessary at this point in time (we can
continue to work on everything in one document), but given the intended
wider applicability it might be convenient to hold it in a separate
document.

Cheers,
Adrian

===

It would be good if the document title indicated (as the Abstract does)
what the document contains.  Something like...
   Management Tools for Policy-based Access Control

---

The abbreviation "UCL" is fine, but I don't like the expansion you give
in Section 2

   *  User group based ACL (UCL):  A YANG data model for policy-based
         network access control that specifies an extension to the IETF
         ACL model defined in [RFC8519].

1. It is weird to say that the UCL is a YANG model (when the ACL is
   clearly not a YANG model in its own right).
2. It is hard to make "User group based ACL" into UCL.
3. I am currently going through pain with the IESG objecting to calling
   something "the IETF foo" because "what if another one comes along?"

How about...

   *  User group based Control List (UCL) model:  A YANG data model for
         policy-based network access control that specifies an extension
         to the ACL YANG model defined in [RFC8519].

---

I think you might move the definition of NACL to Section 2 (especially
given the name of the document and its short title.

---

In section 2, the definition of endpoint includes "end user". I find
that term confusing: is "a user" a person, an application, or a device?
Actually, probably you mean "end-user", not a the user of an end :-)

---

Section 3 has...

   NACL policies may need to vary over time.  For example, companies may
   restrict (or grant) employees access to specific internal or external
   resources during work hours, while another policy is adopted during
   off-hours and weekends.

Pedantically, the example you give here is of use of different policies
over time, not actually varying the policies themselves.

---

4.1 should expand "SDN". A reference would be useful, too. References
for NAS and AAA on their first use would also be useful.

---

While this is obviously in the purview of this working group, it is
going to need some serious security review. The chairs need to make
provision for that, possibly by approaching SAAG to get a security
reviewer assigned.

From: OPSAWG <[email protected]<mailto:[email protected]>> On 
Behalf Of Tianran Zhou
Sent: Tuesday, September 5, 2023 2:13 AM
To: [email protected]<mailto:[email protected]>
Cc: [email protected]<mailto:[email protected]>
Subject: [OPSAWG] Working group adoption call for draft-ma-opsawg-ucl-acl-03

Hi WG,

This mail starts a two weeks working group adoption call for 
draft-ma-opsawg-ucl-acl-03
https://datatracker.ietf.org/doc/draft-ma-opsawg-ucl-acl/

Please send over your objections or supports to the mailing list.
If you object the adoption, please also give the reason, so that the authors 
can improve.
We will conclude this adoption call on Sep 20, 2023.
All your comments are welcome.

Best,
Tianran

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