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Subject: Re: [cti] CTI TC Adoption and Interoperability SCs


The thing I like about this, if it is simple enough to understand and figure out/test for, is it gives developers/product managers a line in the sand to shoot for.  

I often get asked by many a vendor, "how much of STIX / TAXII do I need to implement to do XYZ?"


Thanks,

Bret



Bret Jordan CISSP
Director of Security Architecture and Standards | Office of the CTO
Blue Coat Systems
PGP Fingerprint: 63B4 FC53 680A 6B7D 1447  F2C0 74F8 ACAE 7415 0050
"Without cryptography vihv vivc ce xhrnrw, however, the only thing that can not be unscrambled is an egg." 

On Jul 6, 2015, at 14:50, David Eilken <deilken@fsisac.us> wrote:

Eric, I was just about to chime in that we do need some maturity measurements (vs testing/ validation), but I it didn't sound like you are necessarily in contention with that, and I wouldn't advocate for layers and layers of testing.

More on Maturity Measurements, since we recently took a stab at it (below). To Mark's previous points, there is value in essentially chunking the STIX profile into different levels of maturity and also identifying certain features (STIX Editing for example) as measurements of more mature implementations. Same could be done for TAXII (ingesting STIX from a Feed is simple compared to pushing data back to an Inbox). This approach starts to overlap with the more "qualitative" aspects that Jane referred to.

Level 1: Supports a subset of STIX object types (Indicators). Supports a subset of CybOx object types (observables)
Level 2: In addition to level 1, adds basic context like: title, description, types, date/times, producer, etc.
Level 3: In addition to level 2, adds support for Sightings
Level 4: In addition to level 3, adds all STIX and CybOx object types.
Level 5: In addition to level 4, adds support for STIX object updates and Revocation


Testing and measuring maturity would essentially be separate items. One would test sample data against a submitted profile for validation/ interoperability, and then measure it's maturity.


Dave


________________________________________
From: cti@lists.oasis-open.org <cti@lists.oasis-open.org> on behalf of Struse, Richard <Richard.Struse@HQ.DHS.GOV>
Sent: Monday, July 6, 2015 1:09 PM
To: Eric Burger; cti@lists.oasis-open.org
Subject: RE: [cti] CTI TC Adoption and Interoperability SCs

I think we are actually in agreement.  I'm not advocating heavyweight "suites" of exhaustive tests but I do think we will benefit from a shared understanding of the basic outlines of what it means to be interoperable.  Definitely a question that the SC would need to tackle.

-----Original Message-----
From: cti@lists.oasis-open.org [mailto:cti@lists.oasis-open.org] On Behalf Of Eric Burger
Sent: Monday, July 06, 2015 3:47 PM
To: cti@lists.oasis-open.org
Subject: Re: [cti] CTI TC Adoption and Interoperability SCs

Believe it or not, I would shy away from any measurements short of what we say someone needs to do to meet a profile, which is the profile definition itself.

Likewise, I would shy away from test or verification suites. The industry’s experience with standards with elaborate verification suites has been the protocols fail because it takes ages to build the verification suites, they are obsolete when published, which ossifies the underlying specification.

In a decade after everyone is using STIX and TAXII, we can think about formal acceptance suites.

If the specifications are so obfuscated we need specifications to specify what the specifications specify, we have failed.

On Jul 6, 2015, at 3:39 PM, Struse, Richard <Richard.Struse@hq.dhs.gov> wrote:

Makes sense.

If we (the CTI TC) focus on defining what interoperability means for
STIX/TAXII/CybOX and how to measure/verify it, that leaves the door open for
third-party organizations such as testing labs to conduct interoperability
tests using the CTI TC-defined benchmarks.

-----Original Message-----
From: cti@lists.oasis-open.org [mailto:cti@lists.oasis-open.org] On Behalf
Of Eric Burger
Sent: Monday, July 06, 2015 3:18 PM
To: cti@lists.oasis-open.org
Subject: Re: [cti] CTI TC Adoption and Interoperability SCs

When I was Chair of the SPEECHSC IETF Work Group (speech server control), we
setup a self-reported interoperability matrix:
http://standardstrack.com/ietf/speechsc/MRCPv2-Plans.html

Same for LEMONADE (mobile messaging):
http://standardstrack.com/ietf/lemonade/Lemonade-Plans.html

The idea is OASIS will *not* become the protocol police. That is too
expensive and carries unlimited liability. What a self-reporting resource
does do is (1) advertise who is running with the standards and (2) who has
tested against whom. That is not a guarantee of interoperability, but it is
lightyears ahead of publishing and praying.


On Jul 6, 2015, at 2:31 PM, Tony Rutkowski <tony@yaanatech.com> wrote:

It would be useful if CTI maintained the equivalent of
the MILE Implementation Report ID just announced below.

Additionally, in a world of dramatic scaling of cloud data
center virtualization, especially NFV, instantiating a CTI
dedicated focus on the subject is important.

--tony

---------------

https://tools.ietf.org/html/draft-ietf-mile-implementreport-05

MILE C. Inacio
Internet-Draft CMU
Intended status: Informational                               D. Miyamoto
Expires: January 6, 2016                                          UTokyo
July 5, 2015


                    MILE Implementation Report
                draft-ietf-mile-implementreport-05


Abstract

This document is a collection of implementation reports from vendors,
consortiums, and researchers who have implemented one or more of the
standards published from the IETF INCident Handling (INCH) and
Management Incident Lightweight Exchange (MILE) working groups.



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