Group Communications at Concordia

J. William AtwoodHigh Speed Protocols

LaboratoryConcordia University

Montreal, Quebec, Canada

2007/01/11 Group Communications at Concordia

2

Problem Statement No one can make money using

multicast Solution

Add Security Add User Identification Add (distributed) Accounting

2007/01/11 Group Communications at Concordia

3

IETF Mboned Working Group Multicast Accounting Requirements

draft-ietf-mboned-macct-req-04.txt

Multicast AAA Framework draft-ietf-mboned-multiaaa-

framework-02.txt

2007/01/11 Group Communications at Concordia

4

IETF Multicast Accounting Requirements What is needed for a “fully AAA

enabled IP multicast network”? Recognition that “proprietary

solutions” are not desirable Recognition that requirements include

provision of Quality of Service 14 identified functional requirements

2007/01/11 Group Communications at Concordia

5

IETF Framework Provides a framework for AAA

End User (EU) Content Provider (CP) Network Service Provider (NSP)

2007/01/11 Group Communications at Concordia

6

An Architecture for Group Management More interacting components than

are discussed in the IETF work Actors

Content provider (CP) Merchant (MR) Financial Institution (FI) Network Service Provider (NSP) End User (EU)

2007/01/11 Group Communications at Concordia

7

Component InteractionsCP MR FI

NSP EU

EU

EU

2007/01/11 Group Communications at Concordia

8

Requirements Identify participants

(Authentication) Authorize Participants

(Authorization) Account for resource usage Authenticate sender Confidentiality (if required)

2007/01/11 Group Communications at Concordia

9

Subdividing the CP and NSP Content provider

Content server Network Service Provider

AAA Server Core Routers Access Routers

2007/01/11 Group Communications at Concordia

10

Sequence of ActionsCP MR FI

NSP EU

EU

EU

AAAS

NAS/AR

NAS/AR

NAS/AR

CR

CR

CR

CRRP

NAS/ AR

2007/01/11 Group Communications at Concordia

11

Status 1 Key management

PhD Dissertation on use of Proxy Encryption completed

MCS Thesis on Packet Manipulation completed

Visiting colleague: paper on use of HIP

2007/01/11 Group Communications at Concordia

12

Status 2 User Identification and AAA

MCS Thesis on EU/AR/AAAS interactions completed

PhD Dissertation on mechanisms and policies in progress – presented today

2007/01/11 Group Communications at Concordia

13

Status 3 Deployment

PhD Dissertation on deployment strategies and mechanisms almost completed

2007/01/11 Group Communications at Concordia

14

Status 4 Securing the business and financial

interactions MCS Thesis completed PhD Dissertation beginning

2007/01/11 Group Communications at Concordia

15

For more information http://users.encs.concordia.ca/

~bill/hspl bill@cse.concordia.ca