Tom Petch
On 29/10/2020 11:23, Rafa Marin-Lopez wrote:
Hi Tom:
El 28 oct 2020, a las 19:02, tom petch <daedulus@xxxxxxxxxxxxx> escribió:
On 28/10/2020 10:42, Rafa Marin-Lopez wrote:
Hi Tom:
Thank you very much for your insight. It is very helpful. Please see our
comments/questions inline.
El 27 oct 2020, a las 13:42, tom petch <daedulus@xxxxxxxxxxxxx>
escribió:
I think that the IESG will find a number of problems with this I-D.
YANG module references RFC822 which is several years out of date
Rafa
On boiler plate, I mean the reference to RFC2119 which now must use the
language from RFC8174 in the body of the I-D; sorry for the confusion.
Ah ok. I guess you are referring to change that paragraph with this:
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED",
"MAY", and
"OPTIONAL" in this document are to be interpreted as described in BCP
14 RFC2119 RFC8174 when, and only when, they appear in all capitals,
as shown here.
On XXXX, you have XXXX standing in for more than one RFC-to-be which
confuses. The convention is to use XXXX for this I-D and then AAAA BBBB etc
for any others such as the netconf I-D in this instance.
Ah ok. In any case, we have now only XXXX for our RFC-to-be so problem
fixed.
Two big issues, for me (perhaps not for others). The convention with YANG
is for each successive line to be indented two characters, you have four, which
creates a lot of white space and pushes the text to the right hand margin. I
think that two characters is the default when you use pyang to format a YANG
module.
We can try to reduce it to two characters.
And references. I have had to work harder than I want to to make
sense of the IANA references. I think you should have five separate
references in the I-D for IANA for Transform Type 1 Transform Type 3
Transform Type 4 Authentication Method Protocol Numbers and each
reference in the I-D should have a URL pointing to the specific section of
IANA web site.
Ok, good. This follows what we thought.
In the YANG, it is harder to know what to do. Those first three references
are in the third tier i.e.
Group - Internet Key Exchange V2 (IKEv2) Parameters Registry
-Transform Attribute Types and then Type 1, 3, 4 as the third tier as
I am calling it and I think that every reference in the YANG should
give me all three tiers after IANA in that order perhaps IANA; IKEv2
Parameters; Transform Atribute Types; Transform Type 1
Great. We also considered this as a possible solution after sending our e-mail.
Let’s do it.
If the syntax needs tweeking, then the RFC Editor will do a good job of that
but at present the references are inconsistent in which elements are specified
in what order and that is something the RFC Editor probably cannot cope with.
Authentication Method is a registry so that just needs Group name and
Registry name after IANA.
Ok, good.
Some minor glitches.
I-D appears twice in the body of the I-D - perhaps document or memo.
Ok.
objetives/objectives/
Fixed.
end port number perhaps /must/MUST/
and YANG is very good at including such checks with a must ....
'If AEAD is used .. where? this occurs in several places and I think that you
need to specify the leaf where AEAD will be specified or implied.
Ok we have changed it to:
If Authenticated Encryption with Associated Data (AEAD) is used (leaf
esp-algorithms/encryption/algorithm-type)
this flag MUST be false."
And is it possible to make that a YANG 'must' statement - looking at the
IKEv2 registries it is not obvious which are AEAD so that might be more
complexity than it is worth.
'only available on linux kernels' Um implementation detail, you may get
asked to remove that altogether or at least to a Informative Appendix - I would
leave it in for now.
Ok.
'import ietf-i2nsf-ikec' the reference needs to be to a RFC and if it
is not yet an RFC then RFC XXXX <title> in both Appendix B and C
Yes, we have changed that to:
RFC XXXX: Software-Defined Networking
(SDN)-based IPsec Flow Protection.
leaf-list pfs-groups could do with a reference - Transform Type 4?
The leaf list is referring to type pfs-group and we have now
typedef pfs-group {
type uint16;
description
"DH groups for IKE and IPsec SA rekey.";
reference
"IANA; Internet Key Exchange V2 (IKEv2) Parameters;
Transform Atribute Types; Transform Type 4 -
Diffie-Hellman Group Transform IDs.
Section 3.3.2 in RFC 7296.";
}
I am still working my way through the YANG so may have some more
comments tomorrow.
Ok, do not worry we will work in -12 with these comments so far to have a
quick response. We can prepare a another version later with the rest of them.
Thank you very much for your effort.
Tom Petch
We have realized that we missed to change this, even though we discussed
it. We will change it right away in the following way (bold):
case rfc822-address-string {
leaf rfc822-address-string {
type string;
description
"Specifies the identity as a
fully-qualified RFC5322 email
address string. An example is,
jsmith@xxxxxxxxxxx. The string
MUST NOT contain any
terminators e.g., NULL, CR,
etc.).";
reference
"RFC 5322.";
}
}
Btw, we already used in the past “case rfc822-address-string” and “leaf
rfc822-address-string” since this is coming from IKEv2 standard. Do you think
we should change that name as well?
YANG module references IANA Protocol Numbers which is not in the
I-D references
We have included the following reference:
[IANA-Protocols-Number]
Internet Assigned Numbers Authority (IANA), "Protocol
Numbers", January 2020.
s.2 boiler plate is out of date
What we see is the I-D has the second choice stated in
https://www.ietf.org/standards/ids/guidelines/
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
Could you refer what is out of date?
XXXX is standing in for more than one RFC
Yes, XXXX has been used because we do not know the future number
assigned to our I-D.
Also we realized we also included this to refer to crypto-types I-D but this
has been solved now in a new version -12 that we are preparing to include your
comments. We noticed we can replace the type of rw cert-data?, ca-data*, crl-
data? for binary without any problem.
| | +--rw cert-data? binary
| +--rw private-key? binary
| +--rw ca-data* binary
| +--rw crl-data? binary
but the show stopper that makes a proper review of this too costly is the
references. Those to IANA of which there are several I want to pursue. The I-D
reference is to IKEv2 parameters. Sadly, this is a three tier structure and noone
agrees on what to call the third tier so I will call it tier3 here. Top level is
Group, as per RFC8126, second level is Registry. The I-D reference is to the
Group only which is fine if the actual reference then specifies the Registry and
Tier3 but they never do, usually just Tier3 e.g. Transform Type 3 which makes
for a lot of work for the reader, too much for this one. You have to go hunting
in all the second level Registry until you can find a match for the Tier3
identifier. And there are no URL. If you want an example that I find easy to use,
go look at RFC8407 (as usual).
You’re right. Could you point the exact part at RFC 8407 with that
example? We would really appreciate it.
On the other hand, would it be enough to include the URL for Transform
Type 3 https://www.iana.org/assignments/ikev2-parameters/ikev2-
parameters.xhtml#ikev2-parameters-7 ?
(Same for Transform Type 1, Transform Type 4)
The reference for import of i2nsf-ikec gives a YANG module name;
this needs to be the name of the RFC to be
Fixed.
import ietf-i2nsf-ikec {
prefix nsfikec;
reference
"RFC XXXX: Software-Defined Networking
(SDN)-based IPsec Flow Protection."; }
We still use XXXX because we do not know the number assigned to the RFC
to be.
The example IPv6 address in the YANG module has :0:0: which is usually
just ::
Fixed.
If you have any further comments, please let us know so we can
include them in -12
Best Regards.
And I have some way to go still.
Tom Petch
On 22/10/2020 18:39, Rafa Marin-Lopez wrote:
Dear all:
After receiving a suggestion to make things clearer in the feature ikeless-
notification description, we have just uploaded a new version -11 with a minor
change to add the following text:
feature ikeless-notification {
description
"This feature indicates that the server supports
generating notifications in the ikeless module.
To ensure broader applicability of this module,
the notifications are marked as a feature.
For the implementation of ikeless case,
the NSF is expected to implement this
feature.";
}
Best Regards.
Inicio del mensaje reenviado:
De: internet-drafts@xxxxxxxx
Asunto: New Version Notification for
draft-ietf-i2nsf-sdn-ipsec-flow-protection-11.txt
Fecha: 22 de octubre de 2020, 15:32:50 CEST
Para: "Fernando Pereniguez-Garcia"
<fernando.pereniguez@xxxxxxxxxxx>, "Rafael Lopez" <rafa@xxxxx>,
"Gabriel Lopez-Millan" <gabilm@xxxxx>, "Rafa Marin-Lopez"
<rafa@xxxxx>
A new version of I-D,
draft-ietf-i2nsf-sdn-ipsec-flow-protection-11.txt
has been successfully submitted by Rafa Marin-Lopez and posted to
the IETF repository.
Name: draft-ietf-i2nsf-sdn-ipsec-flow-protection
Revision: 11
Title: Software-Defined Networking (SDN)-based IPsec Flow
Protection
Document date: 2020-10-22
Group: i2nsf
Pages: 92
URL: https://www.ietf.org/archive/id/draft-ietf-i2nsf-sdn-ipsec-
flow-protection-11.txt
Status: https://datatracker.ietf.org/doc/draft-ietf-i2nsf-sdn-ipsec-
flow-protection/
Htmlized: https://datatracker.ietf.org/doc/html/draft-ietf-i2nsf-sdn-
ipsec-flow-protection
Htmlized: https://tools.ietf.org/html/draft-ietf-i2nsf-sdn-ipsec-flow-
protection-11
Diff: https://www.ietf.org/rfcdiff?url2=draft-ietf-i2nsf-sdn-ipsec-
flow-protection-11
Abstract:
This document describes how to provide IPsec-based flow protection
(integrity and confidentiality) by means of an Interface to Network
Security Function (I2NSF) controller. It considers two main well-
known scenarios in IPsec: (i) gateway-to-gateway and (ii) host-to-
host. The service described in this document allows the
configuration and monitoring of IPsec Security Associations (SAs)
from a I2NSF Controller to one or several flow-based Network
Security
Functions (NSFs) that rely on IPsec to protect data traffic.
The document focuses on the I2NSF NSF-facing interface by providing
YANG data models for configuring the IPsec databases (SPD, SAD,
PAD)
and IKEv2. This allows IPsec SA establishment with minimal
intervention by the network administrator. It does not define any
new protocol.
Please note that it may take a couple of minutes from the time of
submission until the htmlized version and diff are available at
tools.ietf.org.
The IETF Secretariat
-------------------------------------------------------
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: rafa@xxxxx
-------------------------------------------------------
-------------------------------------------------------
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: rafa@xxxxx
-------------------------------------------------------
-------------------------------------------------------
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: rafa@xxxxx
-------------------------------------------------------
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