1. LionShare Presented by Eric Ferrin, Sr Director, Digital Library Technologies Net@EDU, Feb 3, 2004 Copyright Penn State University, 2004. This work is the intellectual property of the author, Michael Halm. Permission is granted for this material to be shared for non-commercial, educational purposes, provided that this copyright statement appears on the reproduced materials and notice is given that the copying is by permission of the author. To disseminate otherwise or to republish requires written permission from the author.

2. The edge of the network is the new frontier It is personal It is social It is nomadic It is connected…

3. The edge of the network is the new frontier It is personal It is social It is nomadic It is connected… … and disconnected

4. Agenda LionShare background Provide an overview of LionShare Discuss Current/Future Efforts

5. LionShare Origins Visual Image User Study (VIUS) Hosted in University Libraries at Penn State A two-year user study sponsored by Mellon Foundation Looking at how fac/staff/students use digital images in teaching, research and service Several prototypes identified –Peer-to-Peer was identified as one possible solution - LionShare prototype

6. VIUS Identified These Problems Need for tools to manage personal collections Rapid movement from analog to digital Difficulty in finding appropriate resources Difficulty merging public/private collections Need for faculty/student/dept’s to manage large collections Need for copyright and access control

7. Why Use P2P for LionShare? Encourages collaboration –Student, faculty members and departments Helps manage the digital media explosion –Digital consumer devices Provides common organizational structure –Metadata and standards Flexible and Scalable –Customizable for different needs

8. LionShare Uses Media organization (offline use) Publish personal media collections Person-to-person collaboration Group projects Departmental collaboration Formation of user communities Publication of academic collections

9. LionShare Design Goals Media management Simple, intuitive interface User-defined sharing Authenticated access to the network Standard descriptive metadata structure Leverage Open Source

10. LionShare Architecture Based on Limewire Open Source project Modified version of the Gnutella protocol –P2P + Client/Server Architecture –Decentralized + Centralized Topology Integrated Authentication with Kerberos

11. LionShare Architecture LionShare adds the concept of a PeerServer PeerServer Local aggregator Adds persistence to P2P Can function as gateway Administrative interface Web interface

12. LionShare Principles The Three A’s Authentication –Kerberos Authorization –Access Control Accountability –Non-anonymous network Userid associated with shared files Activity logging

13. LionShare Topology Private P2P Network Hybrid topology (P2P+Client/Server) –PeerServers Users can publish metadata and/or files to a server to remain shared on the P2P network even though the user is not connected to the network –PeerServer Uses Off-line sharing Remote backup WWW publication possibilities

14. Peer Institution “A” P2P Networks LionShare Conceptual Design

15. PeerServer Peer Institution “A” P2P Networks

16. LionShare Conceptual Design PeerServer Peer Institution “A” Authentication Service P2P Networks

17. Current Development Status Accomplishments to date –Basic architectural design complete –LionShare App Alpha Release MIT Kerberos compatibility XML schemas for learning object description Protocol customization –LionShare PeerServer prototype Alpha pre-release –Mellon development grant just awarded

18. Future Development Plans Hardening the LionShare Application Re-engineering the PeerServer Federation of the LionShare protocol –Shibboleth-like implementation Connecting to Fixed Repositories –IMS DRI Spec/OKI OSIDs –Access to Large Collections

19. LionShare Conceptual Design PeerServer Peer Institution “A” Authentication Service P2P Networks

20. LionShare Conceptual Design PeerServer Peer Institutional Boundary PeerServer Peer Institution “A” Institution “B” Authentication Service Authentication Service P2P Networks Trust fabric [Shibboleth-like]

22. LionShare Conceptual Design PeerServer Peer Institutional Boundary PeerServer Peer Institution “A” Institution “B” Authentication Service Authentication Service P2P Networks Trust fabric [Shibboleth-like]

23. LionShare Conceptual Design PeerServer Peer Institutional Boundary PeerServer Peer Institution “A” Institution “B” Authentication Service Authentication Service P2P Networks Trust fabric [Shibboleth-like] OSID Translator Gateway Fixed Repository (Merlot, Careo, EdNA)

25. Future P2P Directions NomadicP2P networks – wireless hand-helds P2P networks –Personal Learning Management Systems Personal ePortfolio Management Systems Personal Back-up Solution Distributed Academic Resource Systems Security and encryption End-to-end diagnostics

26. Co-development Effort Open Source Project Partnering to develop these ideas Some clearly out of scope for current effort Website will develop some of these ideas Informal community approach

27. LionShare Team Penn State University Internet 2 Middleware and P2P WGs eduSource Canada/Simon Fraser U. MIT - Open Knowledge Initiative (OKI) And others –Dartmouth, Florida, Georgia Tech…

28. Contact Interim LionShare website: –http://lionshare.its.psu.eduhttp://lionshare.its.psu.edu Mike Halm mjh@psu.edumjh@psu.edu