We found out that the bluesheets, which were flashy green in Adelaide are now actually pink (see below). We need to form rough consensus on this one.
The AAA Architecture (AAAarch) Research Group met Wednesday August 2,
2000, during the 48th IETF in Pittsburgh, Pennsylvania, U.S.A. The
meeting convened at 3:30 p.m.
Chairs: Cees de Laat (not present)
John Vollbrecht (on the picture)
John Vollbrecht 5 : Agenda bashing, FNT and opening remarks
Farrell, Salowey 20 : authentication framework
Ed Ellesson 15 : presentation on policy
Henry Sinnreich 10 : SIP
Theodore Havinis 15 : SIP
Georg Carle 7 : Accounting Issues
Tanja Zseby 8 : Examples for policy-based Accounting
in AAA Framework
Bob Morgan 15 : Middleware, I2 and AAA
Nevil Brownlee 5 : update on session ID thinking
John Vollbrecht 15 : discussion of direction and
structure of future work
John Vollbrecht 5 : General concluding remarks, collect
blue sheets, recognizable by pink color
1. Agenda bashing and opening remarks -- John Vollbrecht
John Vollbrecht opened the meeting by welcoming everyone
2. AAAarch Authentication Schemes -- Stephen Farrell, Joe Salowey
Stephen Farrell and Joe Salowey presented work they did in
collaboration with John Vollbrecht and Standish Stewart to establish
an authentication framework and tie it in with the authorization
framework developed previously.
Stephen Farrell explained the work of the authentication
team is analyzing existing authentication schemes, creating models,
and matching them up with the authorization models. He described the
factors considered and showed basic block diagrams for several models
involving a user, an application, and an application AAA server.
Joe Salowey presented more specific models illustrating how the
Kerberos authentication system might be modeled. He presented
several different push and pull models including interdomain models.
3. Policy Framework Status -- Ed Ellesson
Next, Ed Ellesson, one of the co-chairs of the Policy Framework
presented an overview of the work of the Policy Framework WG. He
described the objectives of the working group and listed the other
groups with which they work both within and outside the IETF. He
then gave a brief overview of the policy framework shared between the
Policy Framework and Resource Allocation Protocol (RAP) Working
Groups. He defined a policy as consisting of policy rules which, in
turn, consist of policy conditions and policy actions. He concluded
with a summary of working group work items and deliverables.
The discussion following the presentation ranged from interdomain
issues to the relatively static nature of policy.
4. AAA Usage for IP Telephony with QoS -- Henry Sinnreich
Henry Sinnreich began his presentation by citing the Internet Drafts:
His presentation explained and elaborated on the work in the first
of the drafts, "AAA Usage for IP Telephony with QoS". He presented a
model showing the entities involved in interdomain SIP and the
communication required to authenticate, authorize, and account for
the SIP calls.
The discussion following the presentation focused on the trust
relationships between the various entities.
5. How can AAA Infrastructure Support Services and Applications in Roaming
Architectures -- Theodore Havinis
Theodore Havinis' presentation discussed issues in applying AAA to
SIP in a 3G mobile environment with roaming. He considered both end
user and network to network authentication and considered the use of
an AAA infrastructure for key distribution and the possible
piggybacking of SIP registration information. He concluded by
describing three different modes of operation for network to network
authentication and security: in-band, out-of-band, and transparent.
6. Policy-based Accounting: Accounting Issues -- Georg Carle
Georg Carle presented work he did jointly with Sebastian Zander. He
discussed the following issues concerning policy-based accounting:
flexibility, outsourcing, abstraction (the desire to use a variety of
metering devices while hiding heterogeneity), the interaction of
accounting with authentication and authorization, privacy, and
scalability and efficiency. He presented slides depicting a
policy-based accounting architecture.
7. Examples for Policy-based Accounting in the AAA Framework -- Tanja Zseby
Tanja Zseby began her presentation by positioning the policy-based
accounting work being done at GMD Fokus against other important
accounting papers. She next presented two detailed accounting
examples. The first was for a diffserv service with integrated
accounting. The second example showed discrete accounting. She
concluded by listing the remaining work items in the field of
8. General concluding remarks, collect pink sheets -- John Vollbrecht
There will possibly be an interim meeting Sept. 28-29 in Berlin
hosted by GMD Fokus.
The meeting concluded at 5:30 p.m.
* * * * *
For more information on the work of the AAA Architecture Research Group,
see the RG web page at:
An email list archive with frames can be found at:
A plain text version of the entire email archive can be downloaded from:
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