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From: Linda Dunbar <linda.dunbar@huawei.com>
To: Luyuan Fang <lufang@microsoft.com>, "Deepak Bansal (AZURE)" <dbansal@microsoft.com>, "i2nsf@ietf.org" <i2nsf@ietf.org>
Thread-Topic: Questions about draft-fang-i2nsf-inter-cloud-ddos-mitigation-api-00
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Subject: [I2nsf] Questions about draft-fang-i2nsf-inter-cloud-ddos-mitigation-api-00
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Lu Yuan and Deepak,

Some questions on your draft:

Section 2 (Problem Statement):

-        DDoS attacks are usually  to hosts, servers, etc. What are include=
d in the DDoS attacks to "Pipe"? Your draft mentioned  "consuming the bandw=
idth" by unwanted traffic? What else?

-        Your draft stated that "today, exchange of DDoS attack information=
 and mitigation among providers is largely manual". Can you elaborate some =
details of those "manually exchanged DDoS attack information"?  Those detai=
led information can help the WG to derive the appropriate information/data =
model.

-        What does "saturation resistance" mean?  What is the definition of=
 "DDoS absorption resilience of the link"?

-


Section 3:

-        Page 6: the DDoS Protection Types listed are mostly for hosts (end=
 stations). Most pipes between providers have aggregated traffic, so router=
s on both side of the pipes don't normally see the "TCP flood rate, UDP flo=
od rate, TCP SYN.ACK/RST, etc"


-        BGP Signaling & Mitigation mentioned in Section 3. Are you advocat=
ing to use BGP as a way to dispatch the polices to routers on both sides of=
 the pipes and to monitor the traffic through the pipes"?



Thank you very much.



Linda Dunbar

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<p class=3D"MsoNormal">Lu Yuan and Deepak, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Some questions on your draft:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Section 2 (Problem Statement): <o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
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<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,&quot;sans-serif&quot;"><span style=3D"mso-list:Ignore">-<span s=
tyle=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"font-size:10.0pt;font-family:=
&quot;Segoe UI&quot;,&quot;sans-serif&quot;">DDoS attacks are usually&nbsp;=
 to hosts, servers, etc. What are included in the DDoS attacks to &quot;Pip=
e&quot;? Your draft mentioned &nbsp;&#8220;consuming the bandwidth&#8221; b=
y unwanted
 traffic? What else? </span><o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,&quot;sans-serif&quot;"><span style=3D"mso-list:Ignore">-<span s=
tyle=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;
</span></span></span><![endif]>Your draft stated that &#8220;today, exchang=
e of DDoS attack information and mitigation among providers is largely manu=
al&#8221;. Can you elaborate some details of those &#8220;manually exchange=
d DDoS attack information&#8221;? &nbsp;Those detailed information
 can help the WG to derive the appropriate information/data model. <o:p></o=
:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,&quot;sans-serif&quot;"><span style=3D"mso-list:Ignore">-<span s=
tyle=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;
</span></span></span><![endif]>What does &#8220;saturation resistance&#8221=
; mean? &nbsp;What is the definition of &#8220;DDoS absorption resilience o=
f the link&#8221;?
<o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,&quot;sans-serif&quot;"><span style=3D"mso-list:Ignore">-<span s=
tyle=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;
</span></span></span><![endif]><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt"><o:p>&nbsp;</o:p=
></span></b></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt">Section 3:<o:p></o:=
p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,&quot;sans-serif&quot;"><span style=3D"mso-list:Ignore">-<span s=
tyle=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;
</span></span></span><![endif]><span style=3D"font-size:10.0pt">Page 6: the=
 DDoS Protection Types listed are mostly for hosts (end stations). Most pip=
es between providers have aggregated traffic, so routers on both side of th=
e pipes don&#8217;t normally see the &#8220;TCP
 flood rate, UDP flood rate, TCP SYN.ACK/RST, etc&#8221;<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo1">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,&quot;sans-serif&quot;"><span style=3D"mso-list:Ignore">-<span s=
tyle=3D"font:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;&nbsp;
</span></span></span><![endif]>BGP Signaling &amp; Mitigation mentioned in =
Section 3. Are you advocating to use BGP as a way to dispatch the polices t=
o routers on both sides of the pipes and to monitor the traffic through the=
 pipes&#8221;?
<o:p></o:p></p>
<p class=3D"MsoListParagraph"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in">Thank you very much=
. <o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in"><o:p>&nbsp;</o:p></=
p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in">Linda Dunbar<o:p></=
o:p></p>
</div>
</body>
</html>

--_000_4A95BA014132FF49AE685FAB4B9F17F657DE5448dfweml701chm_--


From nobody Wed Feb  3 01:23:47 2016
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From: "Adrian Farrel" <adrian@olddog.co.uk>
To: <i2nsf@ietf.org>
Date: Wed, 3 Feb 2016 09:23:34 -0000
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Thanks, Sue, for posting our first two WG drafts and for sorting out the
author-count issue.

WG, it's great that we have our first two WG I-Ds. Let's try to build a little
momentum with these and our next milestone which is the Framework.

I think some comments about the two new WG I-Ds were received during the poll,
so it would be good to work on these with any on-list discussion that is needed.
I also think that the Framework draft has some actions needed (arising from
Yokohama) to get it ready for adoption.

Please ask if anything is not clear.

Thanks,
Adrian
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Or buy from me direct.




From nobody Wed Feb  3 05:54:23 2016
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Subject: [I2nsf] I-D Action: draft-ietf-i2nsf-gap-analysis-00.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Interface to Network Security Functions Working Group of the IETF.

        Title           : Analysis of Existing work for I2NSF
        Authors         : Susan Hares
                          Bob Moskowitz
                          Dacheng Zhang 
	Filename        : draft-ietf-i2nsf-gap-analysis-00.txt
	Pages           : 44
	Date            : 2016-02-02

Abstract:
   This document analyzes the status of the arts in industries and the
   existing IETF work/protocols that are relevant to the Interface to
   Network Security Function (I2NSF).  The I2NSF focus is to define data
   models and interfaces in order to control and monitor the physical
   and virtual aspects of network security functions.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-i2nsf-gap-analysis/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-i2nsf-gap-analysis-00


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.

Internet-Drafts are also available by anonymous FTP at:
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From nobody Wed Feb  3 05:54:26 2016
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Subject: [I2nsf] I-D Action: draft-ietf-i2nsf-problem-and-use-cases-00.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
 This draft is a work item of the Interface to Network Security Functions Working Group of the IETF.

        Title           : I2NSF Problem Statement and Use cases
        Authors         : Susan Hares
                          Linda Dunbar
                          Diego R. Lopex
                          Myo Zarny
                          Christian Jacquenet
	Filename        : draft-ietf-i2nsf-problem-and-use-cases-00.txt
	Pages           : 22
	Date            : 2016-02-02

Abstract:
   This document describes the problem statement for Interface to
   Network Security Functions (I2NSF) and summary of the I2NSF use
   cases.


The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-ietf-i2nsf-problem-and-use-cases/

There's also a htmlized version available at:
https://tools.ietf.org/html/draft-ietf-i2nsf-problem-and-use-cases-00


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.

Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/


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Adrian: 

I'm going to dive into fixing the comments for these drafts now that   Are
we still considering a separate terminology draft?  Terminology was one of
the issues people mentioned. 

Sue 

-----Original Message-----
From: I2nsf [mailto:i2nsf-bounces@ietf.org] On Behalf Of Adrian Farrel
Sent: Wednesday, February 03, 2016 4:24 AM
To: i2nsf@ietf.org
Subject: [I2nsf] First WG drafts

Thanks, Sue, for posting our first two WG drafts and for sorting out the
author-count issue.

WG, it's great that we have our first two WG I-Ds. Let's try to build a
little momentum with these and our next milestone which is the Framework.

I think some comments about the two new WG I-Ds were received during the
poll, so it would be good to work on these with any on-list discussion that
is needed.
I also think that the Framework draft has some actions needed (arising from
Yokohama) to get it ready for adoption.

Please ask if anything is not clear.

Thanks,
Adrian
--
Buy your Valentine a book!
Tales from the Wood - Eighteen new fairy tales
http://www.feedaread.com/books/Tales-from-the-Wood-9781786100924.aspx
http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924
Or buy from me direct.



_______________________________________________
I2nsf mailing list
I2nsf@ietf.org
https://www.ietf.org/mailman/listinfo/i2nsf


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--001a114114c257e994052adf4e79
Content-Type: text/plain; charset=UTF-8

I hope that we will have a terminology draft. I've written 4 of 6 posts on
the SOAF proposal; one of the reasons I did so was because I felt that
"subject" (for example) was an overloaded term (since it had previous usage
in policy management).

For the record, I would be happy to contribute to a terminology draft.


regards,
John

On Wed, Feb 3, 2016 at 5:57 AM, Susan Hares <shares@ndzh.com> wrote:

> Adrian:
>
> I'm going to dive into fixing the comments for these drafts now that   Are
> we still considering a separate terminology draft?  Terminology was one of
> the issues people mentioned.
>
> Sue
>
> -----Original Message-----
> From: I2nsf [mailto:i2nsf-bounces@ietf.org] On Behalf Of Adrian Farrel
> Sent: Wednesday, February 03, 2016 4:24 AM
> To: i2nsf@ietf.org
> Subject: [I2nsf] First WG drafts
>
> Thanks, Sue, for posting our first two WG drafts and for sorting out the
> author-count issue.
>
> WG, it's great that we have our first two WG I-Ds. Let's try to build a
> little momentum with these and our next milestone which is the Framework.
>
> I think some comments about the two new WG I-Ds were received during the
> poll, so it would be good to work on these with any on-list discussion that
> is needed.
> I also think that the Framework draft has some actions needed (arising from
> Yokohama) to get it ready for adoption.
>
> Please ask if anything is not clear.
>
> Thanks,
> Adrian
> --
> Buy your Valentine a book!
> Tales from the Wood - Eighteen new fairy tales
> http://www.feedaread.com/books/Tales-from-the-Wood-9781786100924.aspx
> http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924
> Or buy from me direct.
>
>
>
> _______________________________________________
> I2nsf mailing list
> I2nsf@ietf.org
> https://www.ietf.org/mailman/listinfo/i2nsf
>
> _______________________________________________
> I2nsf mailing list
> I2nsf@ietf.org
> https://www.ietf.org/mailman/listinfo/i2nsf
>



-- 
regards,
John

--001a114114c257e994052adf4e79
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>I hope that we will have a terminology draft. I&#39;v=
e written 4 of 6 posts on the SOAF proposal; one of the reasons I did so wa=
s because I felt that &quot;subject&quot; (for example) was an overloaded t=
erm (since it had previous usage in policy management).</div><div><br></div=
><div>For the record, I would be happy to contribute to a terminology draft=
.</div><div><br></div><div><br></div><div>regards,</div><div>John</div></di=
v><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, Feb 3, =
2016 at 5:57 AM, Susan Hares <span dir=3D"ltr">&lt;<a href=3D"mailto:shares=
@ndzh.com" target=3D"_blank">shares@ndzh.com</a>&gt;</span> wrote:<br><bloc=
kquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #cc=
c solid;padding-left:1ex">Adrian:<br>
<br>
I&#39;m going to dive into fixing the comments for these drafts now that=C2=
=A0 =C2=A0Are<br>
we still considering a separate terminology draft?=C2=A0 Terminology was on=
e of<br>
the issues people mentioned.<br>
<br>
Sue<br>
<br>
-----Original Message-----<br>
From: I2nsf [mailto:<a href=3D"mailto:i2nsf-bounces@ietf.org">i2nsf-bounces=
@ietf.org</a>] On Behalf Of Adrian Farrel<br>
Sent: Wednesday, February 03, 2016 4:24 AM<br>
To: <a href=3D"mailto:i2nsf@ietf.org">i2nsf@ietf.org</a><br>
Subject: [I2nsf] First WG drafts<br>
<br>
Thanks, Sue, for posting our first two WG drafts and for sorting out the<br=
>
author-count issue.<br>
<br>
WG, it&#39;s great that we have our first two WG I-Ds. Let&#39;s try to bui=
ld a<br>
little momentum with these and our next milestone which is the Framework.<b=
r>
<br>
I think some comments about the two new WG I-Ds were received during the<br=
>
poll, so it would be good to work on these with any on-list discussion that=
<br>
is needed.<br>
I also think that the Framework draft has some actions needed (arising from=
<br>
Yokohama) to get it ready for adoption.<br>
<br>
Please ask if anything is not clear.<br>
<br>
Thanks,<br>
Adrian<br>
--<br>
Buy your Valentine a book!<br>
Tales from the Wood - Eighteen new fairy tales<br>
<a href=3D"http://www.feedaread.com/books/Tales-from-the-Wood-9781786100924=
.aspx" target=3D"_blank" rel=3D"noreferrer">http://www.feedaread.com/books/=
Tales-from-the-Wood-9781786100924.aspx</a><br>
<a href=3D"http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924" =
target=3D"_blank" rel=3D"noreferrer">http://www.amazon.co.uk/Tales-Wood-Adr=
ian-Farrel/dp/1786100924</a><br>
Or buy from me direct.<br>
<br>
<br>
<br>
_______________________________________________<br>
I2nsf mailing list<br>
<a href=3D"mailto:I2nsf@ietf.org">I2nsf@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/i2nsf" target=3D"_blank" r=
el=3D"noreferrer">https://www.ietf.org/mailman/listinfo/i2nsf</a><br>
<br>
_______________________________________________<br>
I2nsf mailing list<br>
<a href=3D"mailto:I2nsf@ietf.org">I2nsf@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/i2nsf" target=3D"_blank" r=
el=3D"noreferrer">https://www.ietf.org/mailman/listinfo/i2nsf</a><br>
</blockquote></div><br><br clear=3D"all"><br>-- <br><div class=3D"gmail_sig=
nature"><div>regards,</div><div>John</div></div>
</div>

--001a114114c257e994052adf4e79--


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John:=20

=20

Let=E2=80=99s collaborate.  Perhaps you can send me ideas and =
I=E2=80=99ll put them in a document.=20

=20

Sue=20

=20

From: I2nsf [mailto:i2nsf-bounces@ietf.org] On Behalf Of John Strassner
Sent: Wednesday, February 03, 2016 10:31 AM
To: Susan Hares
Cc: i2nsf@ietf.org; Adrian Farrel
Subject: Re: [I2nsf] First WG drafts

=20

I hope that we will have a terminology draft. I've written 4 of 6 posts =
on the SOAF proposal; one of the reasons I did so was because I felt =
that "subject" (for example) was an overloaded term (since it had =
previous usage in policy management).

=20

For the record, I would be happy to contribute to a terminology draft.

=20

=20

regards,

John

=20

On Wed, Feb 3, 2016 at 5:57 AM, Susan Hares <shares@ndzh.com> wrote:

Adrian:

I'm going to dive into fixing the comments for these drafts now that   =
Are
we still considering a separate terminology draft?  Terminology was one =
of
the issues people mentioned.

Sue

-----Original Message-----
From: I2nsf [mailto:i2nsf-bounces@ietf.org] On Behalf Of Adrian Farrel
Sent: Wednesday, February 03, 2016 4:24 AM
To: i2nsf@ietf.org
Subject: [I2nsf] First WG drafts

Thanks, Sue, for posting our first two WG drafts and for sorting out the
author-count issue.

WG, it's great that we have our first two WG I-Ds. Let's try to build a
little momentum with these and our next milestone which is the =
Framework.

I think some comments about the two new WG I-Ds were received during the
poll, so it would be good to work on these with any on-list discussion =
that
is needed.
I also think that the Framework draft has some actions needed (arising =
from
Yokohama) to get it ready for adoption.

Please ask if anything is not clear.

Thanks,
Adrian
--
Buy your Valentine a book!
Tales from the Wood - Eighteen new fairy tales
http://www.feedaread.com/books/Tales-from-the-Wood-9781786100924.aspx
http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924
Or buy from me direct.



_______________________________________________
I2nsf mailing list
I2nsf@ietf.org
https://www.ietf.org/mailman/listinfo/i2nsf

_______________________________________________
I2nsf mailing list
I2nsf@ietf.org
https://www.ietf.org/mailman/listinfo/i2nsf




--=20

regards,

John


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</o:shapelayout></xml><![endif]--></head><body lang=3DEN-US link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>John: <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Let=E2=80=99s collaborate.=C2=A0 Perhaps you can send me ideas and =
I=E2=80=99ll put them in a document. <o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Sue <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
I2nsf [mailto:i2nsf-bounces@ietf.org] <b>On Behalf Of </b>John =
Strassner<br><b>Sent:</b> Wednesday, February 03, 2016 10:31 =
AM<br><b>To:</b> Susan Hares<br><b>Cc:</b> i2nsf@ietf.org; Adrian =
Farrel<br><b>Subject:</b> Re: [I2nsf] First WG =
drafts<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><div><p class=3DMsoNormal>I =
hope that we will have a terminology draft. I've written 4 of 6 posts on =
the SOAF proposal; one of the reasons I did so was because I felt that =
&quot;subject&quot; (for example) was an overloaded term (since it had =
previous usage in policy management).<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>For the record, I would be happy to contribute to a =
terminology draft.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p></div><div><p =
class=3DMsoNormal>regards,<o:p></o:p></p></div><div><p =
class=3DMsoNormal>John<o:p></o:p></p></div></div><div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal>On Wed, =
Feb 3, 2016 at 5:57 AM, Susan Hares &lt;<a =
href=3D"mailto:shares@ndzh.com" =
target=3D"_blank">shares@ndzh.com</a>&gt; wrote:<o:p></o:p></p><p =
class=3DMsoNormal>Adrian:<br><br>I'm going to dive into fixing the =
comments for these drafts now that&nbsp; &nbsp;Are<br>we still =
considering a separate terminology draft?&nbsp; Terminology was one =
of<br>the issues people mentioned.<br><br>Sue<br><br>-----Original =
Message-----<br>From: I2nsf [mailto:<a =
href=3D"mailto:i2nsf-bounces@ietf.org">i2nsf-bounces@ietf.org</a>] On =
Behalf Of Adrian Farrel<br>Sent: Wednesday, February 03, 2016 4:24 =
AM<br>To: <a =
href=3D"mailto:i2nsf@ietf.org">i2nsf@ietf.org</a><br>Subject: [I2nsf] =
First WG drafts<br><br>Thanks, Sue, for posting our first two WG drafts =
and for sorting out the<br>author-count issue.<br><br>WG, it's great =
that we have our first two WG I-Ds. Let's try to build a<br>little =
momentum with these and our next milestone which is the =
Framework.<br><br>I think some comments about the two new WG I-Ds were =
received during the<br>poll, so it would be good to work on these with =
any on-list discussion that<br>is needed.<br>I also think that the =
Framework draft has some actions needed (arising from<br>Yokohama) to =
get it ready for adoption.<br><br>Please ask if anything is not =
clear.<br><br>Thanks,<br>Adrian<br>--<br>Buy your Valentine a =
book!<br>Tales from the Wood - Eighteen new fairy tales<br><a =
href=3D"http://www.feedaread.com/books/Tales-from-the-Wood-9781786100924.=
aspx" =
target=3D"_blank">http://www.feedaread.com/books/Tales-from-the-Wood-9781=
786100924.aspx</a><br><a =
href=3D"http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924" =
target=3D"_blank">http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/178=
6100924</a><br>Or buy from me =
direct.<br><br><br><br>_______________________________________________<br=
>I2nsf mailing list<br><a =
href=3D"mailto:I2nsf@ietf.org">I2nsf@ietf.org</a><br><a =
href=3D"https://www.ietf.org/mailman/listinfo/i2nsf" =
target=3D"_blank">https://www.ietf.org/mailman/listinfo/i2nsf</a><br><br>=
_______________________________________________<br>I2nsf mailing =
list<br><a href=3D"mailto:I2nsf@ietf.org">I2nsf@ietf.org</a><br><a =
href=3D"https://www.ietf.org/mailman/listinfo/i2nsf" =
target=3D"_blank">https://www.ietf.org/mailman/listinfo/i2nsf</a><o:p></o=
:p></p></div><p class=3DMsoNormal><br><br clear=3Dall><br>-- =
<o:p></o:p></p><div><div><p =
class=3DMsoNormal>regards,<o:p></o:p></p></div><div><p =
class=3DMsoNormal>John<o:p></o:p></p></div></div></div></div></body></htm=
l>
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Sure, love to.
Currently at the TMF meetings in Portugal; please give me a week...

regards,
John

On Wed, Feb 3, 2016 at 7:44 AM, Susan Hares <shares@ndzh.com> wrote:

> John:
>
>
>
> Let=E2=80=99s collaborate.  Perhaps you can send me ideas and I=E2=80=99l=
l put them in a
> document.
>
>
>
> Sue
>
>
>
> *From:* I2nsf [mailto:i2nsf-bounces@ietf.org] *On Behalf Of *John
> Strassner
> *Sent:* Wednesday, February 03, 2016 10:31 AM
> *To:* Susan Hares
> *Cc:* i2nsf@ietf.org; Adrian Farrel
> *Subject:* Re: [I2nsf] First WG drafts
>
>
>
> I hope that we will have a terminology draft. I've written 4 of 6 posts o=
n
> the SOAF proposal; one of the reasons I did so was because I felt that
> "subject" (for example) was an overloaded term (since it had previous usa=
ge
> in policy management).
>
>
>
> For the record, I would be happy to contribute to a terminology draft.
>
>
>
>
>
> regards,
>
> John
>
>
>
> On Wed, Feb 3, 2016 at 5:57 AM, Susan Hares <shares@ndzh.com> wrote:
>
> Adrian:
>
> I'm going to dive into fixing the comments for these drafts now that   Ar=
e
> we still considering a separate terminology draft?  Terminology was one o=
f
> the issues people mentioned.
>
> Sue
>
> -----Original Message-----
> From: I2nsf [mailto:i2nsf-bounces@ietf.org] On Behalf Of Adrian Farrel
> Sent: Wednesday, February 03, 2016 4:24 AM
> To: i2nsf@ietf.org
> Subject: [I2nsf] First WG drafts
>
> Thanks, Sue, for posting our first two WG drafts and for sorting out the
> author-count issue.
>
> WG, it's great that we have our first two WG I-Ds. Let's try to build a
> little momentum with these and our next milestone which is the Framework.
>
> I think some comments about the two new WG I-Ds were received during the
> poll, so it would be good to work on these with any on-list discussion th=
at
> is needed.
> I also think that the Framework draft has some actions needed (arising fr=
om
> Yokohama) to get it ready for adoption.
>
> Please ask if anything is not clear.
>
> Thanks,
> Adrian
> --
> Buy your Valentine a book!
> Tales from the Wood - Eighteen new fairy tales
> http://www.feedaread.com/books/Tales-from-the-Wood-9781786100924.aspx
> http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924
> Or buy from me direct.
>
>
>
> _______________________________________________
> I2nsf mailing list
> I2nsf@ietf.org
> https://www.ietf.org/mailman/listinfo/i2nsf
>
> _______________________________________________
> I2nsf mailing list
> I2nsf@ietf.org
> https://www.ietf.org/mailman/listinfo/i2nsf
>
>
>
>
> --
>
> regards,
>
> John
>



--=20
regards,
John

--001a114114c242c6bc052adf8d79
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Sure, love to.</div><div>Currently at the TMF meeting=
s in Portugal; please give me a week...</div><div><br></div><div>regards,</=
div><div>John</div></div><div class=3D"gmail_extra"><br><div class=3D"gmail=
_quote">On Wed, Feb 3, 2016 at 7:44 AM, Susan Hares <span dir=3D"ltr">&lt;<=
a href=3D"mailto:shares@ndzh.com" target=3D"_blank">shares@ndzh.com</a>&gt;=
</span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .=
8ex;border-left:1px #ccc solid;padding-left:1ex"><div lang=3D"EN-US" vlink=
=3D"purple" link=3D"blue"><div><p class=3D"MsoNormal"><span style=3D"color:=
rgb(31,73,125);font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-=
size:11pt">John: <u></u><u></u></span></p><p class=3D"MsoNormal"><span styl=
e=3D"color:rgb(31,73,125);font-family:&quot;Calibri&quot;,&quot;sans-serif&=
quot;;font-size:11pt"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"=
><span style=3D"color:rgb(31,73,125);font-family:&quot;Calibri&quot;,&quot;=
sans-serif&quot;;font-size:11pt">Let=E2=80=99s collaborate.=C2=A0 Perhaps y=
ou can send me ideas and I=E2=80=99ll put them in a document. <u></u><u></u=
></span></p><p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font=
-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u>=
=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span style=3D"color:rgb(31,=
73,125);font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11=
pt">Sue <u></u><u></u></span></p><p class=3D"MsoNormal"><span style=3D"colo=
r:rgb(31,73,125);font-family:&quot;Calibri&quot;,&quot;sans-serif&quot;;fon=
t-size:11pt"><u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><b><span=
 style=3D"font-family:&quot;Tahoma&quot;,&quot;sans-serif&quot;;font-size:1=
0pt">From:</span></b><span style=3D"font-family:&quot;Tahoma&quot;,&quot;sa=
ns-serif&quot;;font-size:10pt"> I2nsf [mailto:<a href=3D"mailto:i2nsf-bounc=
es@ietf.org" target=3D"_blank">i2nsf-bounces@ietf.org</a>] <b>On Behalf Of =
</b>John Strassner<br><b>Sent:</b> Wednesday, February 03, 2016 10:31 AM<br=
><b>To:</b> Susan Hares<br><b>Cc:</b> <a href=3D"mailto:i2nsf@ietf.org" tar=
get=3D"_blank">i2nsf@ietf.org</a>; Adrian Farrel<br><b>Subject:</b> Re: [I2=
nsf] First WG drafts<u></u><u></u></span></p><p class=3D"MsoNormal"><u></u>=
=C2=A0<u></u></p><div><div><p class=3D"MsoNormal">I hope that we will have =
a terminology draft. I&#39;ve written 4 of 6 posts on the SOAF proposal; on=
e of the reasons I did so was because I felt that &quot;subject&quot; (for =
example) was an overloaded term (since it had previous usage in policy mana=
gement).<u></u><u></u></p></div><div><p class=3D"MsoNormal"><u></u>=C2=A0<u=
></u></p></div><div><p class=3D"MsoNormal">For the record, I would be happy=
 to contribute to a terminology draft.<u></u><u></u></p></div><div><p class=
=3D"MsoNormal"><u></u>=C2=A0<u></u></p></div><div><p class=3D"MsoNormal"><u=
></u>=C2=A0<u></u></p></div><div><p class=3D"MsoNormal">regards,<u></u><u><=
/u></p></div><div><p class=3D"MsoNormal">John<u></u><u></u></p></div></div>=
<div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><div><p class=3D"MsoNor=
mal">On Wed, Feb 3, 2016 at 5:57 AM, Susan Hares &lt;<a href=3D"mailto:shar=
es@ndzh.com" target=3D"_blank">shares@ndzh.com</a>&gt; wrote:<u></u><u></u>=
</p><p class=3D"MsoNormal">Adrian:<br><br>I&#39;m going to dive into fixing=
 the comments for these drafts now that=C2=A0 =C2=A0Are<br>we still conside=
ring a separate terminology draft?=C2=A0 Terminology was one of<br>the issu=
es people mentioned.<br><br>Sue<br><br>-----Original Message-----<br>From: =
I2nsf [mailto:<a href=3D"mailto:i2nsf-bounces@ietf.org" target=3D"_blank">i=
2nsf-bounces@ietf.org</a>] On Behalf Of Adrian Farrel<br>Sent: Wednesday, F=
ebruary 03, 2016 4:24 AM<br>To: <a href=3D"mailto:i2nsf@ietf.org" target=3D=
"_blank">i2nsf@ietf.org</a><br>Subject: [I2nsf] First WG drafts<br><br>Than=
ks, Sue, for posting our first two WG drafts and for sorting out the<br>aut=
hor-count issue.<br><br>WG, it&#39;s great that we have our first two WG I-=
Ds. Let&#39;s try to build a<br>little momentum with these and our next mil=
estone which is the Framework.<br><br>I think some comments about the two n=
ew WG I-Ds were received during the<br>poll, so it would be good to work on=
 these with any on-list discussion that<br>is needed.<br>I also think that =
the Framework draft has some actions needed (arising from<br>Yokohama) to g=
et it ready for adoption.<br><br>Please ask if anything is not clear.<br><b=
r>Thanks,<br>Adrian<br>--<br>Buy your Valentine a book!<br>Tales from the W=
ood - Eighteen new fairy tales<br><a href=3D"http://www.feedaread.com/books=
/Tales-from-the-Wood-9781786100924.aspx" target=3D"_blank">http://www.feeda=
read.com/books/Tales-from-the-Wood-9781786100924.aspx</a><br><a href=3D"htt=
p://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924" target=3D"_bla=
nk">http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924</a><br>O=
r buy from me direct.<br><br><br><br>______________________________________=
_________<br>I2nsf mailing list<br><a href=3D"mailto:I2nsf@ietf.org" target=
=3D"_blank">I2nsf@ietf.org</a><br><a href=3D"https://www.ietf.org/mailman/l=
istinfo/i2nsf" target=3D"_blank">https://www.ietf.org/mailman/listinfo/i2ns=
f</a><br><br>_______________________________________________<br>I2nsf maili=
ng list<br><a href=3D"mailto:I2nsf@ietf.org" target=3D"_blank">I2nsf@ietf.o=
rg</a><br><a href=3D"https://www.ietf.org/mailman/listinfo/i2nsf" target=3D=
"_blank">https://www.ietf.org/mailman/listinfo/i2nsf</a><u></u><u></u></p><=
/div><p class=3D"MsoNormal"><br><br clear=3D"all"><br>-- <u></u><u></u></p>=
<div><div><p class=3D"MsoNormal">regards,<u></u><u></u></p></div><div><p cl=
ass=3D"MsoNormal">John<u></u><u></u></p></div></div></div></div></div></blo=
ckquote></div><br><br clear=3D"all"><br>-- <br><div class=3D"gmail_signatur=
e"><div>regards,</div><div>John</div></div>
</div>

--001a114114c242c6bc052adf8d79--


From nobody Wed Feb  3 08:17:45 2016
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Changed milestone "Adopt use Cases, problem statement, and gap
analysis as WG document", set due date to January 2016 from November
2015, resolved as "Done", added draft-ietf-i2nsf-problem-and-use-cases
to milestone.

URL: https://datatracker.ietf.org/wg/i2nsf/charter/


From nobody Wed Feb  3 08:18:34 2016
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Changed milestone "Adopt use Cases, problem statement, and gap
analysis as WG document", added draft-ietf-i2nsf-gap-analysis to
milestone.

URL: https://datatracker.ietf.org/wg/i2nsf/charter/


From nobody Wed Feb  3 17:14:23 2016
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From: "Xialiang (Frank)" <frank.xialiang@huawei.com>
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From nobody Thu Feb  4 09:16:51 2016
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Frank:

I'm glad to include you in this work.=20


Sue=20

-----Original Message-----
From: Xialiang (Frank) [mailto:frank.xialiang@huawei.com]=20
Sent: Wednesday, February 03, 2016 8:14 PM
To: Susan Hares
Cc: adrian@olddog.co.uk; i2nsf@ietf.org; Linda Dunbar
Subject: =B4=F0=B8=B4: [I2nsf] First WG drafts

Hi Sue,
I think the terminology draft is very essential for the other I2NSF =
drafts
for clarifying some concepts and puzzles. I am willing to contribute to =
the
draft.

B.R.
Frank

-----=D3=CA=BC=FE=D4=AD=BC=FE-----
=B7=A2=BC=FE=C8=CB: I2nsf [mailto:i2nsf-bounces@ietf.org] =B4=FA=B1=ED =
Susan Hares
=B7=A2=CB=CD=CA=B1=BC=E4: 2016=C4=EA2=D4=C23=C8=D5 21:57
=CA=D5=BC=FE=C8=CB: adrian@olddog.co.uk; i2nsf@ietf.org
=D6=F7=CC=E2: Re: [I2nsf] First WG drafts

Adrian:=20

I'm going to dive into fixing the comments for these drafts now that   =
Are
we still considering a separate terminology draft?  Terminology was one =
of
the issues people mentioned.=20

Sue=20

-----Original Message-----
From: I2nsf [mailto:i2nsf-bounces@ietf.org] On Behalf Of Adrian Farrel
Sent: Wednesday, February 03, 2016 4:24 AM
To: i2nsf@ietf.org
Subject: [I2nsf] First WG drafts

Thanks, Sue, for posting our first two WG drafts and for sorting out the
author-count issue.

WG, it's great that we have our first two WG I-Ds. Let's try to build a
little momentum with these and our next milestone which is the =
Framework.

I think some comments about the two new WG I-Ds were received during the
poll, so it would be good to work on these with any on-list discussion =
that
is needed.
I also think that the Framework draft has some actions needed (arising =
from
Yokohama) to get it ready for adoption.

Please ask if anything is not clear.

Thanks,
Adrian
--
Buy your Valentine a book!
Tales from the Wood - Eighteen new fairy tales
http://www.feedaread.com/books/Tales-from-the-Wood-9781786100924.aspx
http://www.amazon.co.uk/Tales-Wood-Adrian-Farrel/dp/1786100924
Or buy from me direct.



_______________________________________________
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I2nsf@ietf.org
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_______________________________________________
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From nobody Thu Feb  4 16:06:49 2016
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Thanks! Brilliant to have a group of you self-organise to do this.

If I have any advice on a terminology draft it is "iterate."

Start with just a list of terms and short (incomplete) or even no definitions.
Continue with many revisions of the I-D adding clarity as you go.
If you delve into too much detail in early revisions you may find that the heat
builds in the discussions and the published text gets in the way of refinement.

But mainly, do the work! And thanks.

Adrian



From nobody Thu Feb  4 16:14:48 2016
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--047d7b3a8838dca50e052afabc98
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That is very sage advice, thanks.

Sue, I'll shoot over a first list of terms (with no or short definitions)
to get this started. I'll probably do this on the flight home on Saturday;
holler if you don't see anything by Monday morning.

regards,
John

On Thu, Feb 4, 2016 at 4:06 PM, Adrian Farrel <adrian@olddog.co.uk> wrote:

> Thanks! Brilliant to have a group of you self-organise to do this.
>
> If I have any advice on a terminology draft it is "iterate."
>
> Start with just a list of terms and short (incomplete) or even no
> definitions.
> Continue with many revisions of the I-D adding clarity as you go.
> If you delve into too much detail in early revisions you may find that the
> heat
> builds in the discussions and the published text gets in the way of
> refinement.
>
> But mainly, do the work! And thanks.
>
> Adrian
>
>
> _______________________________________________
> I2nsf mailing list
> I2nsf@ietf.org
> https://www.ietf.org/mailman/listinfo/i2nsf
>



-- 
regards,
John

--047d7b3a8838dca50e052afabc98
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>That is very sage advice, thanks.</div><div><br></div=
><div>Sue, I&#39;ll shoot over a first list of terms (with no or short defi=
nitions) to get this started. I&#39;ll probably do this on the flight home =
on Saturday; holler if you don&#39;t see anything by Monday morning.</div><=
div><br></div><div>regards,</div><div>John</div></div><div class=3D"gmail_e=
xtra"><br><div class=3D"gmail_quote">On Thu, Feb 4, 2016 at 4:06 PM, Adrian=
 Farrel <span dir=3D"ltr">&lt;<a href=3D"mailto:adrian@olddog.co.uk" target=
=3D"_blank">adrian@olddog.co.uk</a>&gt;</span> wrote:<br><blockquote class=
=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padd=
ing-left:1ex">Thanks! Brilliant to have a group of you self-organise to do =
this.<br>
<br>
If I have any advice on a terminology draft it is &quot;iterate.&quot;<br>
<br>
Start with just a list of terms and short (incomplete) or even no definitio=
ns.<br>
Continue with many revisions of the I-D adding clarity as you go.<br>
If you delve into too much detail in early revisions you may find that the =
heat<br>
builds in the discussions and the published text gets in the way of refinem=
ent.<br>
<br>
But mainly, do the work! And thanks.<br>
<br>
Adrian<br>
<br>
<br>
_______________________________________________<br>
I2nsf mailing list<br>
<a href=3D"mailto:I2nsf@ietf.org">I2nsf@ietf.org</a><br>
<a href=3D"https://www.ietf.org/mailman/listinfo/i2nsf" target=3D"_blank" r=
el=3D"noreferrer">https://www.ietf.org/mailman/listinfo/i2nsf</a><br>
</blockquote></div><br><br clear=3D"all"><br>-- <br><div class=3D"gmail_sig=
nature"><div>regards,</div><div>John</div></div>
</div>

--047d7b3a8838dca50e052afabc98--


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From: Luyuan Fang <lufang@microsoft.com>
To: Linda Dunbar <linda.dunbar@huawei.com>, "Deepak Bansal (AZURE)" <dbansal@microsoft.com>, "i2nsf@ietf.org" <i2nsf@ietf.org>
Thread-Topic: Questions about draft-fang-i2nsf-inter-cloud-ddos-mitigation-api-00
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Date: Sun, 7 Feb 2016 06:27:01 +0000
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Subject: Re: [I2nsf] Questions about draft-fang-i2nsf-inter-cloud-ddos-mitigation-api-00
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Hi Linda,

Thanks for bringing up the discussion.
See my answers in-line, marked [LF].


Thanks,

Luyuan

From: Linda Dunbar [mailto:linda.dunbar@huawei.com]
Sent: Monday, February 1, 2016 10:11 AM
To: Luyuan Fang <lufang@microsoft.com>; Deepak Bansal (AZURE) <dbansal@micr=
osoft.com>; i2nsf@ietf.org
Subject: Questions about draft-fang-i2nsf-inter-cloud-ddos-mitigation-api-0=
0

Lu Yuan and Deepak,

Some questions on your draft:

Section 2 (Problem Statement):

-        DDoS attacks are usually  to hosts, servers, etc. What are include=
d in the DDoS attacks to "Pipe"? Your draft mentioned  "consuming the bandw=
idth" by unwanted traffic? What else?

[LF] The DDoS attack can be targeting the hosts, servers, end-points, gatew=
ays, or any devices in between. Regardless of the target, the attack traffi=
c flows through the "Pipes"/inter-connection links, and can saturate these =
large pipes. Attack volume is the key issue here. DDoS attack BW is increas=
ing very fast is the recent years. Attack BW greater than 100G is not uncom=
mon any more. The DDoS attack can consume BW, impact multi-region Data Cent=
ers and Inter-Cloud connectivity, and interrupt multi-services. Because of =
its massive scale, it can also make fast mitigation more challenging.


-        Your draft stated that "today, exchange of DDoS attack information=
 and mitigation among providers is largely manual". Can you elaborate some =
details of those "manually
exchanged DDoS attack information"?  Those detailed information can help th=
e WG to derive the appropriate information/data model.
[LF] By manual, we meant no automation. Manual means someone has to send em=
ails, or make phone calls, etc. Basically, it means no signaling, no common=
 API, no automation across the provider boundaries.


-        What does "saturation resistance" mean?  What is the definition of=
 "DDoS absorption resilience of the link"?
[LF] Saturation resistance means that the attack cannot saturate the connec=
tion links and make them unusable. DDoS absorption resilience of the link -=
 the attack can be absorbed without taking down the network connections and=
 impact the services.
The design to help to achieve the above include: using larger BW links, hav=
ing multiple links to the DC, having more peering-points, having redundancy=
 from all layers, etc.

Section 3:

-        Page 6: the DDoS Protection Types listed are mostly for hosts (end=
 stations). Most pipes between providers have aggregated traffic, so router=
s on both side of the pipes don't normally see the "TCP flood rate, UDP flo=
od rate, TCP SYN.ACK/RST, etc"
[LF] : See my answer to your first question. Router may not be the attack t=
arget, but the attack volume it has to forward can render it useless for ca=
rrying legitimate traffic.


-        BGP Signaling & Mitigation mentioned in Section 3. Are you advocat=
ing to use BGP as a way to dispatch the polices to routers on both sides of=
 the pipes and to monitor the traffic through the pipes"?
[LF] : BGP has been used by all providers for ages, it is extensible and we=
ll understood, so it is a primary candidate. However, we are open to hear o=
ther options too.


Thank you very much.



Linda Dunbar



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<div class=3D"WordSection1">
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Hi Linda,<o:p></o:p></=
span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">Thanks for bringing up=
 the discussion.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">See my answers in-line=
, marked [LF].<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in"><span style=3D"colo=
r:#1F497D">Thanks,<o:p></o:p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in"><span style=3D"colo=
r:#1F497D">Luyuan<o:p></o:p></span></p>
<p class=3D"MsoNormal"><a name=3D"_MailEndCompose"><span style=3D"color:#1F=
497D"><o:p>&nbsp;</o:p></span></a></p>
<span style=3D"mso-bookmark:_MailEndCompose"></span>
<div>
<div style=3D"border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in">
<p class=3D"MsoNormal"><b>From:</b> Linda Dunbar [mailto:linda.dunbar@huawe=
i.com] <br>
<b>Sent:</b> Monday, February 1, 2016 10:11 AM<br>
<b>To:</b> Luyuan Fang &lt;lufang@microsoft.com&gt;; Deepak Bansal (AZURE) =
&lt;dbansal@microsoft.com&gt;; i2nsf@ietf.org<br>
<b>Subject:</b> Questions about draft-fang-i2nsf-inter-cloud-ddos-mitigatio=
n-api-00<o:p></o:p></p>
</div>
</div>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Lu Yuan and Deepak, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Some questions on your draft:<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Section 2 (Problem Statement): <o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,sans-serif"><span style=3D"mso-list:Ignore">-<span style=3D"font=
:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:10.0pt;font-family:=
&quot;Segoe UI&quot;,sans-serif">DDoS attacks are usually&nbsp; to hosts, s=
ervers, etc. What are included in the DDoS attacks to &quot;Pipe&quot;? You=
r draft mentioned &nbsp;&#8220;consuming the bandwidth&#8221; by unwanted t=
raffic?
 What else? </span><o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">[LF</span><span style=
=3D"color:#2F5597;mso-style-textfill-fill-color:#2F5597;mso-style-textfill-=
fill-alpha:100.0%">]
</span><span style=3D"color:#2F5597;mso-style-textfill-fill-color:#2F5597;m=
so-style-textfill-fill-alpha:100.0%">The DDoS attack can be targeting the h=
osts, servers, end-points, gateways, or any devices in between. Regardless =
of the target, the attack traffic
 flows through the &#8220;Pipes&#8221;/inter-connection links, and can satu=
rate these large pipes. Attack volume is the key issue here. DDoS attack BW=
 is increasing very fast is the recent years. Attack BW greater than 100G i=
s not uncommon any more. The DDoS attack can
 consume BW, impact multi-region Data Centers and Inter-Cloud connectivity,=
 and interrupt multi-services. Because of its massive scale, it can also ma=
ke fast mitigation more challenging.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,sans-serif"><span style=3D"mso-list:Ignore">-<span style=3D"font=
:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;
</span></span></span><![endif]>Your draft stated that &#8220;today, exchang=
e of DDoS attack information and mitigation among providers is largely manu=
al&#8221;. Can you elaborate some details of those &#8220;manually
<o:p></o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:.75in">exchanged DDoS attack in=
formation&#8221;? &nbsp;Those detailed information can help the WG to deriv=
e the appropriate information/data model.
<o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">[LF] </span><span styl=
e=3D"color:#2F5597;mso-style-textfill-fill-color:#2F5597;mso-style-textfill=
-fill-alpha:100.0%">By manual, we meant no automation. Manual means someone=
 has to send emails, or make phone calls,
 etc. Basically, it means no signaling, no common API, no automation across=
 the provider boundaries.<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,sans-serif"><span style=3D"mso-list:Ignore">-<span style=3D"font=
:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;
</span></span></span><![endif]>What does &#8220;saturation resistance&#8221=
; mean? &nbsp;What is the definition of &#8220;DDoS absorption resilience o=
f the link&#8221;?
<o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:#2F5597;mso-style-textfill-fill=
-color:#2F5597;mso-style-textfill-fill-alpha:100.0%">[LF] Saturation resist=
ance means that the attack cannot saturate the connection links and make th=
em unusable. DDoS absorption resilience
 of the link &#8211; the attack can be absorbed without taking down the net=
work connections and impact the services.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#2F5597;mso-style-textfill-fill=
-color:#2F5597;mso-style-textfill-fill-alpha:100.0%">The design to help to =
achieve the above include: using larger BW links, having multiple links to =
the DC, having more peering-points,
 having redundancy from all layers, etc.</span><span style=3D"color:#17375E=
;mso-style-textfill-fill-color:#17375E;mso-style-textfill-fill-alpha:100.0%=
"><o:p></o:p></span></p>
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt"><o:p>&nbsp;</o:p=
></span></b></p>
<p class=3D"MsoNormal"><span style=3D"font-size:10.0pt">Section 3:<o:p></o:=
p></span></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,sans-serif"><span style=3D"mso-list:Ignore">-<span style=3D"font=
:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;
</span></span></span><![endif]><span style=3D"font-size:10.0pt">Page 6: the=
 DDoS Protection Types listed are mostly for hosts (end stations). Most pip=
es between providers have aggregated traffic, so routers on both side of th=
e pipes don&#8217;t normally see the &#8220;TCP
 flood rate, UDP flood rate, TCP SYN.ACK/RST, etc&#8221;<o:p></o:p></span><=
/p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">[LF] </span>: <span st=
yle=3D"color:#2F5597;mso-style-textfill-fill-color:#2F5597;mso-style-textfi=
ll-fill-alpha:100.0%">
See my answer to your first question. Router may not be the attack target, =
but the attack volume it has to forward can render it useless for carrying =
legitimate traffic.
<o:p></o:p></span></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:.75in;text-indent:-.25in=
;mso-list:l0 level1 lfo2">
<![if !supportLists]><span style=3D"font-size:10.0pt;font-family:&quot;Sego=
e UI&quot;,sans-serif"><span style=3D"mso-list:Ignore">-<span style=3D"font=
:7.0pt &quot;Times New Roman&quot;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;
</span></span></span><![endif]>BGP Signaling &amp; Mitigation mentioned in =
Section 3. Are you advocating to use BGP as a way to dispatch the polices t=
o routers on both sides of the pipes and to monitor the traffic through the=
 pipes&#8221;?
<o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D">[LF] </span>: <span st=
yle=3D"color:#2F5597;mso-style-textfill-fill-color:#2F5597;mso-style-textfi=
ll-fill-alpha:100.0%">
BGP has been used by all providers for ages, it is extensible and well unde=
rstood, so it is a primary candidate. However, we are open to hear other op=
tions too.</span><o:p></o:p></p>
<p class=3D"MsoNormal"><span style=3D"color:#1F497D"><o:p>&nbsp;</o:p></spa=
n></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in">Thank you very much=
. <o:p></o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in"><o:p>&nbsp;</o:p></=
p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in">Linda Dunbar<o:p></=
o:p></p>
<p class=3D"MsoListParagraph" style=3D"margin-left:0in"><span style=3D"colo=
r:#1F497D"><o:p>&nbsp;</o:p></span></p>
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From: Linda Dunbar <linda.dunbar@huawei.com>
To: "'Netconf'" <netconf@ietf.org>
Thread-Topic: What kind of mechanisms have  NETCONF specified to prevent illegitimate"Clients" or  "Agent"? 
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NETCONF   participants,

Your Chair Mehmet suggested sending the following questions to the list.

I2NSF has a draft on remote attestation (https://datatracker.ietf.org/doc/d=
raft-pastor-i2nsf-vnsf-attestation/ ) which documented the following securi=
ty threats between Client and Controller. I  think those issues also face I=
2RS and NETCONF. Has NETCONF specified some mechanisms to address those iss=
ues?

o An unknown/unauthorized user can try to impersonate another user
that can legitimately access virtualized NSF services (or Network Services)=
. This
attack may lead to accessing the policies and applications of the
attacked user or to generate network traffic outside a the
security functions with a falsified identity.

o An authorized user may misuse assigned privileges to alter the
network traffic processing of other users in the virtualization
platform. This can become especially serious when such a user has
administration privileges granted by the virtualization provider,
the ISP or the local network operator.

o A user may try to install malformed elements (policy or
application), trying to directly take the control of a NSF or
virtualization platform (for example by exploiting a vulnerability
on one of the functions or may try to intercept or modify the
traffic of other users in the same platform.

o A malicious virtualization provider can modify the software
running on it (the operating system or a concrete vNSF) to alter
the behaviour of the latter. This event has a high impact on all
users accessing vNSFs as the virtualization provider has the
highest level of privilege on the software in execution.

o A user with physical access to the virtualization platform can
modify the behavior of hardware components, or the components
themselves. Furthermore, it can access a serial console (most
devices offer this interface for maintenance reasons) to access
the NSF software with the same level of privilege of the
virtualization provider



Thanks, Linda


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<p class=3D"MsoNormal">NETCONF&nbsp;&nbsp; participants, <o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">Your Chair Mehmet suggested sending the following qu=
estions to the list.
<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal">I2NSF has a draft on remote attestation (<a href=3D"=
https://datatracker.ietf.org/doc/draft-pastor-i2nsf-vnsf-attestation/">http=
s://datatracker.ietf.org/doc/draft-pastor-i2nsf-vnsf-attestation/</a> ) whi=
ch documented the following security
 threats between Client and Controller. I &nbsp;think those issues also fac=
e I2RS and NETCONF. Has NETCONF specified some mechanisms to address those =
issues?<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">o An unknown/unauthorized u=
ser can try to impersonate another user<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">that can legitimately acces=
s virtualized NSF services (or Network Services). This<o:p></o:p></span></p=
>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">attack may lead to accessin=
g the policies and applications of the<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">attacked user or to generat=
e network traffic outside a the<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">security functions with a f=
alsified identity.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">o An authorized user may mi=
suse assigned privileges to alter the<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">network traffic processing =
of other users in the virtualization<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">platform. This can become e=
specially serious when such a user has<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">administration privileges g=
ranted by the virtualization provider,<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">the ISP or the local networ=
k operator.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">o A user may try to install=
 malformed elements (policy or<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">application), trying to dir=
ectly take the control of a NSF or<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">virtualization platform (fo=
r example by exploiting a vulnerability<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">on one of the functions or =
may try to intercept or modify the<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">traffic of other users in t=
he same platform.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">o A malicious virtualizatio=
n provider can modify the software<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">running on it (the operatin=
g system or a concrete vNSF) to alter<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">the behaviour of the latter=
. This event has a high impact on all<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">users accessing vNSFs as th=
e virtualization provider has the<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">highest level of privilege =
on the software in execution.<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier"><o:p>&nbsp;</o:p></span></p=
>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">o A user with physical acce=
ss to the virtualization platform can<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">modify the behavior of hard=
ware components, or the components<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">themselves. Furthermore, it=
 can access a serial console (most<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">devices offer this interfac=
e for maintenance reasons) to access<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in;text-autospace:none"><span=
 style=3D"font-size:10.0pt;font-family:Courier">the NSF software with the s=
ame level of privilege of the<o:p></o:p></span></p>
<p class=3D"MsoNormal" style=3D"margin-left:.5in"><span style=3D"font-size:=
10.0pt;font-family:Courier">virtualization provider</span><o:p></o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
<p class=3D"MsoNormal"><b><span style=3D"font-size:10.0pt">Thanks, Linda <o=
:p></o:p></span></b></p>
<p class=3D"MsoNormal"><o:p>&nbsp;</o:p></p>
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From: Kent Watsen <kwatsen@juniper.net>
To: Linda Dunbar <linda.dunbar@huawei.com>, 'Netconf' <netconf@ietf.org>
Thread-Topic: [Netconf] What kind of mechanisms have NETCONF specified to prevent illegitimate"Clients" or "Agent"?
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--_000_ACD729F5A4F644069F52C7ED697B3623junipernet_--


From nobody Thu Feb 18 17:40:21 2016
Return-Path: <strazpdj@gmail.com>
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From: John Strassner <strazpdj@gmail.com>
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Subject: [I2nsf] Post 5: Specific worries about the "Subject-Object-Action-Function"
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Post 5:  Specific worries about the "Subject-Object-Action-Function"
         Paradigm in the Framework draft

I expressed discomfort with the "Subject-Object-Action-Function" (SOAF)
paradigm used in the Framework draft at IETF94. This note explains
these worries in more detail.

1.  Background - Framework Terminology

   None of the SOAF terms are formally defined; rather, they are
   explained informally, as follows:

     - Subject-Match values, based on packet data, packet header, or
       packet payload, which can be one or more header fields or bits
       in the packets, or the various combination of them;
     - Object-Match values, based on context (e.g., state, direction of
       the traffic, time, geo-location, etc.);
     - Action-Egress processing, such as invoke signaling, packet
       forwarding and/or transformation, SDN/NFV integration;
     - Functional Profile - a functional profile is a specific
       organization of characteristics and/or behavior of that define
       the functionality offered by an entity (e.g., IPS:<Profile>,
       signature file, Anti-virus file, URL filtering file, etc.).
       Integrated and one-pass checks on the content of packets are
       examples of a functional profile.

   Section 6.1 also provides the following guidelines:

   The "subject" of the I2NSF policies should not only include the
   matching criteria specified by [ACL-MODEL] but also the L4-L7
   fields depending on the NSFs selected.

   The I2NSF Capability Layer has to specify the "Object" (i.e. the
   context surrounding the packets).

   The I2NSF "actions" should extend the actions specified by [ACL-
   MODEL] to include applying statistics functions that clients
   provide.


2.  Comparison Basis

   Between the start of my posts and now, the I2NSF WG has started
   considering the paradigm of policy rules (specifically, event-
   condition-action policy rules). These may be abstracted as about
   particular type of sentence. The SOAF terms will be compared to
   sentences below.


3.  Worries about using the term "Subject"

   The "subject" term in SOAF is exclusively limited to "packet data,
   packet header, or packet payload" information. This presents
   several problems, including:

     o  From linguistics, the **subject** of a sentence is a person,
        place, thing, or concept that is doing or being something.
        Packet information is not a subject by this definition;
        rather, packet information should be part of the predicate of
        a sentence.
     o  The term "subject" has traditionally been used in policy
        management systems to refer to users or other entities that
        have management responsibility. The concept of a subject is
        critical for authorization policies.
     o  Packet information is typically used as part of a condition,
        though it could also be the target of a policy, meaning
        that some of the packet's data may be changed by the action(s)
        of a policy. Hence, it is not appropriate as defined.

   A related worry is the very narrow definition of subject in section
   1. However, since subject and object from SOAF will be combined (see
   section 3), this is not logged as a problem.

4.  Worries about using the term "Object"

   The "object" term in SOAF suffers from being too generic (e.g.,
   anything could be an object). This presents several problems,
   including:

     o  From linguistics, there are **two** types of objects:
        - a direct object is the receiver of an action in a sentence
        - an indirect object identifies to (or for) whom the action
          is performed
        It is therefore unclear which object is referred to in SOAF.
     o  The definition of "object-match" values is based on context,
        but unfortunately, context is not defined. Please see
        http://www.ietf.org/mail-archive/web/i2nsf/current/msg00762.html
        for a defintiion of context.
     o  The phrase "object-match" [sic] means that the "object" (or
        presumably, one or more of its attributes), are being tested
        against another object. This means that it, like "subject", is
        also playing the role of a condition, which is odd.

5.  Worries about using the term "Action"

   The "action" term in SOAF is not defined. The examples given imply
   that it is similar in nature to a standard policy action, though
   with a more reduced scope of actions that can be defined. However,
   figure 3 is confusing. There is a connection between "action" and
   "Simple Actions", as well as between "action" and "function
   Profile". The connection is neither labeled nor annotated, so it is
   unclear what is meant. However, the worry is that somehow, about
   "Function Profile" is a type of action; this will be addressed in
   the following section.


6.  Worries about using the term "Function"

   The "function" term in SOAF very confusing. The term "function" is
   combined with "profile"; the problem with this is that "functions"
   and "profiles" are very different types of entities. In addition,
   the examples of "profiles" given do not match the traditional
   definition of a "profile", such as that of a user of device profile;
   see UAProf or CC/PP for examples.

   If the purpose of this term is really to "define the functionality
   offered by an entity", then it does not belong with actions at all
   (as is implied in Figure 3); rather, it appears to be part of the
   condition. For example, comparing a signature file would seem to be
   part of the condition of a rule, not an action.


7.  Conclusions

   The "subject", "object", and "function" terms in SOAF are confusing
   and likely misnamed. It is unclear what value SOAF offers over the
   concept of a traditional policy rule. Hence, this will be the
   subject of my last (hopefully) post.

   Note: the text in 6.2 "However, the notion of Groups (or roles),
   Target, Context (or conditions), and Action do cover what is needed
   for clients/applications to express the rules on how their flows can
   be treated by the Flow-Based NSFs in networks" needs to change.

   Note 2:  the framework draft recommended using PCIM as a basis for
   policy rules. Please see Posts 2a and 2b for why this is a BAD idea.
   References for those posts are:
   http://www.ietf.org/mail-archive/web/i2nsf/current/msg00736.html and
   http://www.ietf.org/mail-archive/web/i2nsf/current/msg00737.html

   Alternatively, see Appendix A in
   draft-strassner-supa-generic-policy-info-model-04, which goes into
   additional detail why PCIM and PCIMe were NOT used as a basis for
   However, the notion of Groups (or roles), Target, Context (or

regards,
John

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<div dir=3D"ltr"><p>Post 5:=C2=A0 Specific worries about the &quot;Subject-=
Object-Action-Function&quot;<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 Paradigm in the Framework draft</p><p>I expressed discomfort with th=
e &quot;Subject-Object-Action-Function&quot; (SOAF)<br>paradigm used in the=
 Framework draft at IETF94. This note explains<br>these worries in more det=
ail.</p><p>1.=C2=A0 Background - Framework Terminology</p><p>=C2=A0=C2=A0 N=
one of the SOAF terms are formally defined; rather, they are<br>=C2=A0=C2=
=A0 explained informally, as follows:</p><p>=C2=A0=C2=A0=C2=A0=C2=A0 - Subj=
ect-Match values, based on packet data, packet header, or<br>=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 packet payload, which can be one or more header fi=
elds or bits<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 in the packets, or the=
 various combination of them;<br>=C2=A0=C2=A0=C2=A0=C2=A0 - Object-Match va=
lues, based on context (e.g., state, direction of<br>=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 the traffic, time, geo-location, etc.);<br>=C2=A0=C2=A0=C2=
=A0=C2=A0 - Action-Egress processing, such as invoke signaling, packet<br>=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 forwarding and/or transformation, SDN/=
NFV integration;<br>=C2=A0=C2=A0=C2=A0=C2=A0 - Functional Profile - a funct=
ional profile is a specific<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 organiz=
ation of characteristics and/or behavior of that define<br>=C2=A0=C2=A0=C2=
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;Profile&gt;,<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 signature file, Anti-=
virus file, URL filtering file, etc.).<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 Integrated and one-pass checks on the content of packets are<br>=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 examples of a functional profile.</p><p>=C2=
=A0=C2=A0 Section 6.1 also provides the following guidelines:</p><p>=C2=A0=
=C2=A0 The &quot;subject&quot; of the I2NSF policies should not only includ=
e the<br>=C2=A0=C2=A0 matching criteria specified by [ACL-MODEL] but also t=
he L4-L7<br>=C2=A0=C2=A0 fields depending on the NSFs selected.</p><p>=C2=
=A0=C2=A0 The I2NSF Capability Layer has to specify the &quot;Object&quot; =
(i.e. the<br>=C2=A0=C2=A0 context surrounding the packets).</p><p>=C2=A0=C2=
=A0 The I2NSF &quot;actions&quot; should extend the actions specified by [A=
CL-<br>=C2=A0=C2=A0 MODEL] to include applying statistics functions that cl=
ients<br>=C2=A0=C2=A0 provide.</p><p><br>2.=C2=A0 Comparison Basis</p><p>=
=C2=A0=C2=A0 Between the start of my posts and now, the I2NSF WG has starte=
d<br>=C2=A0=C2=A0 considering the paradigm of policy rules (specifically, e=
vent-<br>=C2=A0=C2=A0 condition-action policy rules). These may be abstract=
ed as about<br>=C2=A0=C2=A0 particular type of sentence. The SOAF terms wil=
l be compared to<br>=C2=A0=C2=A0 sentences below.</p><p>=C2=A0=C2=A0 <br>3.=
=C2=A0 Worries about using the term &quot;Subject&quot;</p><p>=C2=A0=C2=A0 =
The &quot;subject&quot; term in SOAF is exclusively limited to &quot;packet=
 data,<br>=C2=A0=C2=A0 packet header, or packet payload&quot; information. =
This presents<br>=C2=A0=C2=A0 several problems, including:<br>=C2=A0=C2=A0 =
<br>=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 From linguistics, the **subject** of a=
 sentence is a person,<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 place,=
 thing, or concept that is doing or being something.<br>=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 Packet information is not a subject by this defini=
tion;<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 rather, packet informat=
ion should be part of the predicate of<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 a sentence.<br>=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 The term &quot;su=
bject&quot; has traditionally been used in policy<br>=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0 management systems to refer to users or other entitie=
s that<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 have management respon=
sibility. The concept of a subject is<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 critical for authorization policies.<br>=C2=A0=C2=A0=C2=A0=C2=A0 =
o=C2=A0 Packet information is typically used as part of a condition,<br>=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 though it could also be the target =
of a policy, meaning<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 that som=
e of the packet&#39;s data may be changed by the action(s)<br>=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 of a policy. Hence, it is not appropriate as=
 defined.</p><p>=C2=A0=C2=A0 A related worry is the very narrow definition =
of subject in section<br>=C2=A0=C2=A0 1. However, since subject and object =
from SOAF will be combined (see<br>=C2=A0=C2=A0 section 3), this is not log=
ged as a problem.</p><p>4.=C2=A0 Worries about using the term &quot;Object&=
quot;</p><p>=C2=A0=C2=A0 The &quot;object&quot; term in SOAF suffers from b=
eing too generic (e.g.,<br>=C2=A0=C2=A0 anything could be an object). This =
presents several problems,<br>=C2=A0=C2=A0 including:<br>=C2=A0=C2=A0 <br>=
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 From linguistics, there are **two** types =
of objects:<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 - a direct object=
 is the receiver of an action in a sentence<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 - an indirect object identifies to (or for) whom the action=
<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 is performed<br>=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 It is therefore unclear which ob=
ject is referred to in SOAF.<br>=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 The defini=
tion of &quot;object-match&quot; values is based on context,<br>=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 but unfortunately, context is not defined=
. Please see<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"http:=
//www.ietf.org/mail-archive/web/i2nsf/current/msg00762.html">http://www.iet=
f.org/mail-archive/web/i2nsf/current/msg00762.html</a><br>=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 for a defintiion of context.<br>=C2=A0=C2=A0=C2=
=A0=C2=A0 o=C2=A0 The phrase &quot;object-match&quot; [sic] means that the =
&quot;object&quot; (or<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 presum=
ably, one or more of its attributes), are being tested<br>=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0 against another object. This means that it, lik=
e &quot;subject&quot;, is<br>=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 als=
o playing the role of a condition, which is odd.</p><p>5.=C2=A0 Worries abo=
ut using the term &quot;Action&quot;</p><p>=C2=A0=C2=A0 The &quot;action&qu=
ot; term in SOAF is not defined. The examples given imply<br>=C2=A0=C2=A0 t=
hat it is similar in nature to a standard policy action, though<br>=C2=A0=
=C2=A0 with a more reduced scope of actions that can be defined. However,<b=
r>=C2=A0=C2=A0 figure 3 is confusing. There is a connection between &quot;a=
ction&quot; and<br>=C2=A0=C2=A0 &quot;Simple Actions&quot;, as well as betw=
een &quot;action&quot; and &quot;function<br>=C2=A0=C2=A0 Profile&quot;. Th=
e connection is neither labeled nor annotated, so it is<br>=C2=A0=C2=A0 unc=
lear what is meant. However, the worry is that somehow, about<br>=C2=A0=C2=
=A0 &quot;Function Profile&quot; is a type of action; this will be addresse=
d in<br>=C2=A0=C2=A0 the following section.</p><p><br>6.=C2=A0 Worries abou=
t using the term &quot;Function&quot;</p><p>=C2=A0=C2=A0 The &quot;function=
&quot; term in SOAF very confusing. The term &quot;function&quot; is<br>=C2=
=A0=C2=A0 combined with &quot;profile&quot;; the problem with this is that =
&quot;functions&quot;<br>=C2=A0=C2=A0 and &quot;profiles&quot; are very dif=
ferent types of entities. In addition,<br>=C2=A0=C2=A0 the examples of &quo=
t;profiles&quot; given do not match the traditional<br>=C2=A0=C2=A0 definit=
ion of a &quot;profile&quot;, such as that of a user of device profile;<br>=
=C2=A0=C2=A0 see UAProf or CC/PP for examples.</p><p>=C2=A0=C2=A0 If the pu=
rpose of this term is really to &quot;define the functionality<br>=C2=A0=C2=
=A0 offered by an entity&quot;, then it does not belong with actions at all=
<br>=C2=A0=C2=A0 (as is implied in Figure 3); rather, it appears to be part=
 of the<br>=C2=A0=C2=A0 condition. For example, comparing a signature file =
would seem to be<br>=C2=A0=C2=A0 part of the condition of a rule, not an ac=
tion.</p><p>=C2=A0=C2=A0 <br>7.=C2=A0 Conclusions</p><p>=C2=A0=C2=A0 The &q=
uot;subject&quot;, &quot;object&quot;, and &quot;function&quot; terms in SO=
AF are confusing<br>=C2=A0=C2=A0 and likely misnamed. It is unclear what va=
lue SOAF offers over the<br>=C2=A0=C2=A0 concept of a traditional policy ru=
le. Hence, this will be the<br>=C2=A0=C2=A0 subject of my last (hopefully) =
post.<br>=C2=A0=C2=A0 <br>=C2=A0=C2=A0 Note: the text in 6.2 &quot;However,=
 the notion of Groups (or roles),<br>=C2=A0=C2=A0 Target, Context (or condi=
tions), and Action do cover what is needed<br>=C2=A0=C2=A0 for clients/appl=
ications to express the rules on how their flows can<br>=C2=A0=C2=A0 be tre=
ated by the Flow-Based NSFs in networks&quot; needs to change.</p><p>=C2=A0=
=C2=A0 Note 2:=C2=A0 the framework draft recommended using PCIM as a basis =
for<br>=C2=A0=C2=A0 policy rules. Please see Posts 2a and 2b for why this i=
s a BAD idea.<br>=C2=A0=C2=A0 References for those posts are:<br>=C2=A0=C2=
=A0 <a href=3D"http://www.ietf.org/mail-archive/web/i2nsf/current/msg00736.=
html">http://www.ietf.org/mail-archive/web/i2nsf/current/msg00736.html</a> =
and<br>=C2=A0=C2=A0 <a href=3D"http://www.ietf.org/mail-archive/web/i2nsf/c=
urrent/msg00737.html">http://www.ietf.org/mail-archive/web/i2nsf/current/ms=
g00737.html</a><br>=C2=A0=C2=A0 <br>=C2=A0=C2=A0 Alternatively, see Appendi=
x A in<br>=C2=A0=C2=A0 draft-strassner-supa-generic-policy-info-model-04, w=
hich goes into<br>=C2=A0=C2=A0 additional detail why PCIM and PCIMe were NO=
T used as a basis for<br>=C2=A0=C2=A0 However, the notion of Groups (or rol=
es), Target, Context (or</p><div><br></div><div>regards,</div><div>John</di=
v>
</div>

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To: John Strassner <strazpdj@gmail.com>, "i2nsf@ietf.org" <i2nsf@ietf.org>
Thread-Topic: [I2nsf] Post 5: Specific worries about the "Subject-Object-Action-Function"
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From: John Strassner <strazpdj@gmail.com>
To: Linda Dunbar <linda.dunbar@huawei.com>, John Strassner <strazpdj@gmail.com>
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Subject: Re: [I2nsf] Post 5: Specific worries about the "Subject-Object-Action-Function"
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Hi Linda,

thank you for your kind words. I will try and devote Monday to providing a
detailed round of editing to the terminology draft, so that we can get this
out to the WG soon. In this edit, I will expand on what you are saying
(without giving an academic treatise :-)  ).

Thank you for emphasizing the intent of the "functional profile" - I will
give it some serious thought and include it in my edits to the terminology
draft co-authors. Clearly, we need this term defined (note that Sue already
defined the term "profile" and my concerns about it).


regards,
John

On Thu, Feb 25, 2016 at 12:19 PM, Linda Dunbar <linda.dunbar@huawei.com>
wrote:

> John,
>
>
>
> Thank you very much for the comprehensive write-up. That is very good.
>
>
>
> With more support & trend going to ECA model, can you provide a suggestio=
n
> on the =E2=80=9Cterminology=E2=80=9D that  is the matching criteria (i.e.=
 condition) based
> on N-tuples in  packets? V.s. the matching criteria based on others (such
> as internal variables, states, ports, or others)?
>
>
>
>
>
> As for the =E2=80=9Caction=E2=80=9D of the  =E2=80=9CFunctional profile=
=E2=80=9D, the intent was to
> describe the =E2=80=9CAction of applying a specific profile or signature =
file to
> the packets=E2=80=9D ( as compared to the =E2=80=9Caction=E2=80=9D of pas=
sing, dropping or rate
> limiting the packets).
>
>
>
> Linda
>
>
>
> *From:* I2nsf [mailto:i2nsf-bounces@ietf.org] *On Behalf Of *John
> Strassner
> *Sent:* Thursday, February 18, 2016 7:40 PM
> *To:* i2nsf@ietf.org
> *Subject:* [I2nsf] Post 5: Specific worries about the
> "Subject-Object-Action-Function"
>
>
>
> Post 5:  Specific worries about the "Subject-Object-Action-Function"
>          Paradigm in the Framework draft
>
> I expressed discomfort with the "Subject-Object-Action-Function" (SOAF)
> paradigm used in the Framework draft at IETF94. This note explains
> these worries in more detail.
>
> 1.  Background - Framework Terminology
>
>    None of the SOAF terms are formally defined; rather, they are
>    explained informally, as follows:
>
>      - Subject-Match values, based on packet data, packet header, or
>        packet payload, which can be one or more header fields or bits
>        in the packets, or the various combination of them;
>      - Object-Match values, based on context (e.g., state, direction of
>        the traffic, time, geo-location, etc.);
>      - Action-Egress processing, such as invoke signaling, packet
>        forwarding and/or transformation, SDN/NFV integration;
>      - Functional Profile - a functional profile is a specific
>        organization of characteristics and/or behavior of that define
>        the functionality offered by an entity (e.g., IPS:<Profile>,
>        signature file, Anti-virus file, URL filtering file, etc.).
>        Integrated and one-pass checks on the content of packets are
>        examples of a functional profile.
>
>    Section 6.1 also provides the following guidelines:
>
>    The "subject" of the I2NSF policies should not only include the
>    matching criteria specified by [ACL-MODEL] but also the L4-L7
>    fields depending on the NSFs selected.
>
>    The I2NSF Capability Layer has to specify the "Object" (i.e. the
>    context surrounding the packets).
>
>    The I2NSF "actions" should extend the actions specified by [ACL-
>    MODEL] to include applying statistics functions that clients
>    provide.
>
>
> 2.  Comparison Basis
>
>    Between the start of my posts and now, the I2NSF WG has started
>    considering the paradigm of policy rules (specifically, event-
>    condition-action policy rules). These may be abstracted as about
>    particular type of sentence. The SOAF terms will be compared to
>    sentences below.
>
>
> 3.  Worries about using the term "Subject"
>
>    The "subject" term in SOAF is exclusively limited to "packet data,
>    packet header, or packet payload" information. This presents
>    several problems, including:
>
>      o  From linguistics, the **subject** of a sentence is a person,
>         place, thing, or concept that is doing or being something.
>         Packet information is not a subject by this definition;
>         rather, packet information should be part of the predicate of
>         a sentence.
>      o  The term "subject" has traditionally been used in policy
>         management systems to refer to users or other entities that
>         have management responsibility. The concept of a subject is
>         critical for authorization policies.
>      o  Packet information is typically used as part of a condition,
>         though it could also be the target of a policy, meaning
>         that some of the packet's data may be changed by the action(s)
>         of a policy. Hence, it is not appropriate as defined.
>
>    A related worry is the very narrow definition of subject in section
>    1. However, since subject and object from SOAF will be combined (see
>    section 3), this is not logged as a problem.
>
> 4.  Worries about using the term "Object"
>
>    The "object" term in SOAF suffers from being too generic (e.g.,
>    anything could be an object). This presents several problems,
>    including:
>
>      o  From linguistics, there are **two** types of objects:
>         - a direct object is the receiver of an action in a sentence
>         - an indirect object identifies to (or for) whom the action
>           is performed
>         It is therefore unclear which object is referred to in SOAF.
>      o  The definition of "object-match" values is based on context,
>         but unfortunately, context is not defined. Please see
>         http://www.ietf.org/mail-archive/web/i2nsf/current/msg00762.html
>         for a defintiion of context.
>      o  The phrase "object-match" [sic] means that the "object" (or
>         presumably, one or more of its attributes), are being tested
>         against another object. This means that it, like "subject", is
>         also playing the role of a condition, which is odd.
>
> 5.  Worries about using the term "Action"
>
>    The "action" term in SOAF is not defined. The examples given imply
>    that it is similar in nature to a standard policy action, though
>    with a more reduced scope of actions that can be defined. However,
>    figure 3 is confusing. There is a connection between "action" and
>    "Simple Actions", as well as between "action" and "function
>    Profile". The connection is neither labeled nor annotated, so it is
>    unclear what is meant. However, the worry is that somehow, about
>    "Function Profile" is a type of action; this will be addressed in
>    the following section.
>
>
> 6.  Worries about using the term "Function"
>
>    The "function" term in SOAF very confusing. The term "function" is
>    combined with "profile"; the problem with this is that "functions"
>    and "profiles" are very different types of entities. In addition,
>    the examples of "profiles" given do not match the traditional
>    definition of a "profile", such as that of a user of device profile;
>    see UAProf or CC/PP for examples.
>
>    If the purpose of this term is really to "define the functionality
>    offered by an entity", then it does not belong with actions at all
>    (as is implied in Figure 3); rather, it appears to be part of the
>    condition. For example, comparing a signature file would seem to be
>    part of the condition of a rule, not an action.
>
>
> 7.  Conclusions
>
>    The "subject", "object", and "function" terms in SOAF are confusing
>    and likely misnamed. It is unclear what value SOAF offers over the
>    concept of a traditional policy rule. Hence, this will be the
>    subject of my last (hopefully) post.
>
>    Note: the text in 6.2 "However, the notion of Groups (or roles),
>    Target, Context (or conditions), and Action do cover what is needed
>    for clients/applications to express the rules on how their flows can
>    be treated by the Flow-Based NSFs in networks" needs to change.
>
>    Note 2:  the framework draft recommended using PCIM as a basis for
>    policy rules. Please see Posts 2a and 2b for why this is a BAD idea.
>    References for those posts are:
>    http://www.ietf.org/mail-archive/web/i2nsf/current/msg00736.html and
>    http://www.ietf.org/mail-archive/web/i2nsf/current/msg00737.html
>
>    Alternatively, see Appendix A in
>    draft-strassner-supa-generic-policy-info-model-04, which goes into
>    additional detail why PCIM and PCIMe were NOT used as a basis for
>    However, the notion of Groups (or roles), Target, Context (or
>
>
>
> regards,
>
> John
>



--=20
regards,
John

--001a11c3c092db1fbe052cde2dfa
Content-Type: text/html; charset=UTF-8
Content-Transfer-Encoding: quoted-printable

<div dir=3D"ltr"><div>Hi Linda,</div><div><br></div><div>thank you for your=
 kind words. I will try and devote Monday to providing a detailed round of =
editing to the terminology draft, so that we can get this out to the WG soo=
n. In this edit, I will expand on what you are saying (without giving an ac=
ademic treatise :-)=C2=A0 ).</div><div><br></div><div>Thank you for emphasi=
zing the intent of the &quot;functional profile&quot; - I will give it some=
 serious thought and include it in my edits to the terminology draft co-aut=
hors. Clearly, we need this term defined (note that Sue already defined the=
 term &quot;profile&quot; and my concerns about it).</div><div><br></div><d=
iv><p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&=
quot;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">=C2=A0<u></u></sp=
an></p></div><div>regards,</div><div>John</div></div><div class=3D"gmail_ex=
tra"><br><div class=3D"gmail_quote">On Thu, Feb 25, 2016 at 12:19 PM, Linda=
 Dunbar <span dir=3D"ltr">&lt;<a href=3D"mailto:linda.dunbar@huawei.com" ta=
rget=3D"_blank">linda.dunbar@huawei.com</a>&gt;</span> wrote:<br><blockquot=
e class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc sol=
id;padding-left:1ex">





<div lang=3D"EN-US" vlink=3D"purple" link=3D"blue">
<div>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">John,<u></u><u></u><=
/span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u>=C2=A0<u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">Thank you very much =
for the comprehensive write-up. That is very good.
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u>=C2=A0<u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">With more support &a=
mp; trend going to ECA model, can you provide a suggestion on the =E2=80=9C=
terminology=E2=80=9D that =C2=A0is the matching criteria (i.e. condition) b=
ased on N-tuples
 in =C2=A0packets? V.s. the matching criteria based on others (such as inte=
rnal variables, states, ports, or others)?
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u>=C2=A0<u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u>=C2=A0<u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">As for the =E2=80=9C=
action=E2=80=9D of the =C2=A0=E2=80=9CFunctional profile=E2=80=9D, the inte=
nt was to describe the =E2=80=9CAction of applying a specific profile or si=
gnature file to the packets=E2=80=9D (
 as compared to the =E2=80=9Caction=E2=80=9D of passing, dropping or rate l=
imiting the packets). <u></u>
<u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u>=C2=A0<u></u>=
</span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt">Linda
<u></u><u></u></span></p>
<p class=3D"MsoNormal"><span style=3D"color:rgb(31,73,125);font-family:&quo=
t;Calibri&quot;,&quot;sans-serif&quot;;font-size:11pt"><u></u>=C2=A0<u></u>=
</span></p>
<div style=3D"border-width:1pt medium medium;border-style:solid none none;b=
order-color:rgb(181,196,223) currentColor currentColor;padding:3pt 0in 0in"=
>
<p class=3D"MsoNormal"><b><span style=3D"font-family:&quot;Tahoma&quot;,&qu=
ot;sans-serif&quot;;font-size:10pt">From:</span></b><span style=3D"font-fam=
ily:&quot;Tahoma&quot;,&quot;sans-serif&quot;;font-size:10pt"> I2nsf [mailt=
o:<a href=3D"mailto:i2nsf-bounces@ietf.org" target=3D"_blank">i2nsf-bounces=
@ietf.org</a>]
<b>On Behalf Of </b>John Strassner<br>
<b>Sent:</b> Thursday, February 18, 2016 7:40 PM<br>
<b>To:</b> <a href=3D"mailto:i2nsf@ietf.org" target=3D"_blank">i2nsf@ietf.o=
rg</a><br>
<b>Subject:</b> [I2nsf] Post 5: Specific worries about the &quot;Subject-Ob=
ject-Action-Function&quot;<u></u><u></u></span></p>
</div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
<div>
<p>Post 5:=C2=A0 Specific worries about the &quot;Subject-Object-Action-Fun=
ction&quot;<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Paradigm in the Framework =
draft<u></u><u></u></p>
<p>I expressed discomfort with the &quot;Subject-Object-Action-Function&quo=
t; (SOAF)<br>
paradigm used in the Framework draft at IETF94. This note explains<br>
these worries in more detail.<u></u><u></u></p>
<p>1.=C2=A0 Background - Framework Terminology<u></u><u></u></p>
<p>=C2=A0=C2=A0 None of the SOAF terms are formally defined; rather, they a=
re<br>
=C2=A0=C2=A0 explained informally, as follows:<u></u><u></u></p>
<p>=C2=A0=C2=A0=C2=A0=C2=A0 - Subject-Match values, based on packet data, p=
acket header, or<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 packet payload, which can be one or mo=
re header fields or bits<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 in the packets, or the various combina=
tion of them;<br>
=C2=A0=C2=A0=C2=A0=C2=A0 - Object-Match values, based on context (e.g., sta=
te, direction of<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 the traffic, time, geo-location, etc.)=
;<br>
=C2=A0=C2=A0=C2=A0=C2=A0 - Action-Egress processing, such as invoke signali=
ng, packet<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 forwarding and/or transformation, SDN/=
NFV integration;<br>
=C2=A0=C2=A0=C2=A0=C2=A0 - Functional Profile - a functional profile is a s=
pecific<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 organization of characteristics and/or=
 behavior of that define<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 the functionality offered by an entity=
 (e.g., IPS:&lt;Profile&gt;,<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 signature file, Anti-virus file, URL f=
iltering file, etc.).<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Integrated and one-pass checks on the =
content of packets are<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 examples of a functional profile.<u></=
u><u></u></p>
<p>=C2=A0=C2=A0 Section 6.1 also provides the following guidelines:<u></u><=
u></u></p>
<p>=C2=A0=C2=A0 The &quot;subject&quot; of the I2NSF policies should not on=
ly include the<br>
=C2=A0=C2=A0 matching criteria specified by [ACL-MODEL] but also the L4-L7<=
br>
=C2=A0=C2=A0 fields depending on the NSFs selected.<u></u><u></u></p>
<p>=C2=A0=C2=A0 The I2NSF Capability Layer has to specify the &quot;Object&=
quot; (i.e. the<br>
=C2=A0=C2=A0 context surrounding the packets).<u></u><u></u></p>
<p>=C2=A0=C2=A0 The I2NSF &quot;actions&quot; should extend the actions spe=
cified by [ACL-<br>
=C2=A0=C2=A0 MODEL] to include applying statistics functions that clients<b=
r>
=C2=A0=C2=A0 provide.<u></u><u></u></p>
<p><br>
2.=C2=A0 Comparison Basis<u></u><u></u></p>
<p>=C2=A0=C2=A0 Between the start of my posts and now, the I2NSF WG has sta=
rted<br>
=C2=A0=C2=A0 considering the paradigm of policy rules (specifically, event-=
<br>
=C2=A0=C2=A0 condition-action policy rules). These may be abstracted as abo=
ut<br>
=C2=A0=C2=A0 particular type of sentence. The SOAF terms will be compared t=
o<br>
=C2=A0=C2=A0 sentences below.<u></u><u></u></p>
<p>=C2=A0=C2=A0 <br>
3.=C2=A0 Worries about using the term &quot;Subject&quot;<u></u><u></u></p>
<p>=C2=A0=C2=A0 The &quot;subject&quot; term in SOAF is exclusively limited=
 to &quot;packet data,<br>
=C2=A0=C2=A0 packet header, or packet payload&quot; information. This prese=
nts<br>
=C2=A0=C2=A0 several problems, including:<br>
=C2=A0=C2=A0 <br>
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 From linguistics, the **subject** of a sen=
tence is a person,<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 place, thing, or concept that is=
 doing or being something.<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Packet information is not a subj=
ect by this definition;<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 rather, packet information shoul=
d be part of the predicate of<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 a sentence.<br>
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 The term &quot;subject&quot; has tradition=
ally been used in policy<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 management systems to refer to u=
sers or other entities that<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 have management responsibility. =
The concept of a subject is<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 critical for authorization polic=
ies.<br>
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 Packet information is typically used as pa=
rt of a condition,<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 though it could also be the targ=
et of a policy, meaning<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 that some of the packet&#39;s da=
ta may be changed by the action(s)<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 of a policy. Hence, it is not ap=
propriate as defined.<u></u><u></u></p>
<p>=C2=A0=C2=A0 A related worry is the very narrow definition of subject in=
 section<br>
=C2=A0=C2=A0 1. However, since subject and object from SOAF will be combine=
d (see<br>
=C2=A0=C2=A0 section 3), this is not logged as a problem.<u></u><u></u></p>
<p>4.=C2=A0 Worries about using the term &quot;Object&quot;<u></u><u></u></=
p>
<p>=C2=A0=C2=A0 The &quot;object&quot; term in SOAF suffers from being too =
generic (e.g.,<br>
=C2=A0=C2=A0 anything could be an object). This presents several problems,<=
br>
=C2=A0=C2=A0 including:<br>
=C2=A0=C2=A0 <br>
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 From linguistics, there are **two** types =
of objects:<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 - a direct object is the receive=
r of an action in a sentence<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 - an indirect object identifies =
to (or for) whom the action<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 is performed<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 It is therefore unclear which ob=
ject is referred to in SOAF.<br>
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 The definition of &quot;object-match&quot;=
 values is based on context,<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 but unfortunately, context is no=
t defined. Please see<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 <a href=3D"http://www.ietf.org/m=
ail-archive/web/i2nsf/current/msg00762.html" target=3D"_blank">
http://www.ietf.org/mail-archive/web/i2nsf/current/msg00762.html</a><br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 for a defintiion of context.<br>
=C2=A0=C2=A0=C2=A0=C2=A0 o=C2=A0 The phrase &quot;object-match&quot; [sic] =
means that the &quot;object&quot; (or<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 presumably, one or more of its a=
ttributes), are being tested<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 against another object. This mea=
ns that it, like &quot;subject&quot;, is<br>
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 also playing the role of a condi=
tion, which is odd.<u></u><u></u></p>
<p>5.=C2=A0 Worries about using the term &quot;Action&quot;<u></u><u></u></=
p>
<p>=C2=A0=C2=A0 The &quot;action&quot; term in SOAF is not defined. The exa=
mples given imply<br>
=C2=A0=C2=A0 that it is similar in nature to a standard policy action, thou=
gh<br>
=C2=A0=C2=A0 with a more reduced scope of actions that can be defined. Howe=
ver,<br>
=C2=A0=C2=A0 figure 3 is confusing. There is a connection between &quot;act=
ion&quot; and<br>
=C2=A0=C2=A0 &quot;Simple Actions&quot;, as well as between &quot;action&qu=
ot; and &quot;function<br>
=C2=A0=C2=A0 Profile&quot;. The connection is neither labeled nor annotated=
, so it is<br>
=C2=A0=C2=A0 unclear what is meant. However, the worry is that somehow, abo=
ut<br>
=C2=A0=C2=A0 &quot;Function Profile&quot; is a type of action; this will be=
 addressed in<br>
=C2=A0=C2=A0 the following section.<u></u><u></u></p>
<p><br>
6.=C2=A0 Worries about using the term &quot;Function&quot;<u></u><u></u></p=
>
<p>=C2=A0=C2=A0 The &quot;function&quot; term in SOAF very confusing. The t=
erm &quot;function&quot; is<br>
=C2=A0=C2=A0 combined with &quot;profile&quot;; the problem with this is th=
at &quot;functions&quot;<br>
=C2=A0=C2=A0 and &quot;profiles&quot; are very different types of entities.=
 In addition,<br>
=C2=A0=C2=A0 the examples of &quot;profiles&quot; given do not match the tr=
aditional<br>
=C2=A0=C2=A0 definition of a &quot;profile&quot;, such as that of a user of=
 device profile;<br>
=C2=A0=C2=A0 see UAProf or CC/PP for examples.<u></u><u></u></p>
<p>=C2=A0=C2=A0 If the purpose of this term is really to &quot;define the f=
unctionality<br>
=C2=A0=C2=A0 offered by an entity&quot;, then it does not belong with actio=
ns at all<br>
=C2=A0=C2=A0 (as is implied in Figure 3); rather, it appears to be part of =
the<br>
=C2=A0=C2=A0 condition. For example, comparing a signature file would seem =
to be<br>
=C2=A0=C2=A0 part of the condition of a rule, not an action.<u></u><u></u><=
/p>
<p>=C2=A0=C2=A0 <br>
7.=C2=A0 Conclusions<u></u><u></u></p>
<p>=C2=A0=C2=A0 The &quot;subject&quot;, &quot;object&quot;, and &quot;func=
tion&quot; terms in SOAF are confusing<br>
=C2=A0=C2=A0 and likely misnamed. It is unclear what value SOAF offers over=
 the<br>
=C2=A0=C2=A0 concept of a traditional policy rule. Hence, this will be the<=
br>
=C2=A0=C2=A0 subject of my last (hopefully) post.<br>
=C2=A0=C2=A0 <br>
=C2=A0=C2=A0 Note: the text in 6.2 &quot;However, the notion of Groups (or =
roles),<br>
=C2=A0=C2=A0 Target, Context (or conditions), and Action do cover what is n=
eeded<br>
=C2=A0=C2=A0 for clients/applications to express the rules on how their flo=
ws can<br>
=C2=A0=C2=A0 be treated by the Flow-Based NSFs in networks&quot; needs to c=
hange.<u></u><u></u></p>
<p>=C2=A0=C2=A0 Note 2:=C2=A0 the framework draft recommended using PCIM as=
 a basis for<br>
=C2=A0=C2=A0 policy rules. Please see Posts 2a and 2b for why this is a BAD=
 idea.<br>
=C2=A0=C2=A0 References for those posts are:<br>
=C2=A0=C2=A0 <a href=3D"http://www.ietf.org/mail-archive/web/i2nsf/current/=
msg00736.html" target=3D"_blank">http://www.ietf.org/mail-archive/web/i2nsf=
/current/msg00736.html</a> and<br>
=C2=A0=C2=A0 <a href=3D"http://www.ietf.org/mail-archive/web/i2nsf/current/=
msg00737.html" target=3D"_blank">http://www.ietf.org/mail-archive/web/i2nsf=
/current/msg00737.html</a><br>
=C2=A0=C2=A0 <br>
=C2=A0=C2=A0 Alternatively, see Appendix A in<br>
=C2=A0=C2=A0 draft-strassner-supa-generic-policy-info-model-04, which goes =
into<br>
=C2=A0=C2=A0 additional detail why PCIM and PCIMe were NOT used as a basis =
for<br>
=C2=A0=C2=A0 However, the notion of Groups (or roles), Target, Context (or<=
u></u><u></u></p>
<div>
<p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p>
</div>
<div>
<p class=3D"MsoNormal">regards,<u></u><u></u></p>
</div>
<div>
<p class=3D"MsoNormal">John<u></u><u></u></p>
</div>
</div>
</div>
</div>

</blockquote></div><br><br clear=3D"all"><br>-- <br><div class=3D"gmail_sig=
nature"><div>regards,</div><div>John</div></div>
</div>

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