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4/25/2002 Vidmid-vc: Middleware for Video Conferencing Services Egon Verharen, SURFnet Vidmid-vc chair Middleware Vidmid VC History, Scope, Status, Authentication.

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Presentation on theme: "4/25/2002 Vidmid-vc: Middleware for Video Conferencing Services Egon Verharen, SURFnet Vidmid-vc chair Middleware Vidmid VC History, Scope, Status, Authentication."— Presentation transcript:

1 4/25/2002 Vidmid-vc: Middleware for Video Conferencing Services Egon Verharen, SURFnet Vidmid-vc chair Middleware Vidmid VC History, Scope, Status, Authentication & Authorization, Object classes and dir.services, Resource discovery Future

2 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/2 Background Why Collaboration does not know boundaries Services coming your way Shared need & interest Formed in spring 2001 Spent some time naming and scoping Critical insight and momentum from ViDe & Internet2 Middleware (MACE & Shibboleth) leaders Focus on videoconferencing and video-on-demand for their middleware requirements Component of NSF Middleware Initiative (NMI) NMI-EDIT http://www.nmi-edit.org/

3 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/3 Middleware and federated administrations Middleware Its not the network, its not applications, its the stuff nobody wants to do Stuff Identification (who are you?) Authentication (prove me who you are) Authorization (I tell you want you can do) Directory services (where the info is stored) Security Federated Administration Virtual organisations/Communities of interest Trust-based connection between (local) security domains –Higher ed

4 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/4 Where are we ? H.323, SIP, multicast tools

5 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/5 Vidmid in id-world Campus authentication Enterprise directory Web services and servers WebISO Learning Management Systems Personal Portals Objectclass standards (e.g.eduperson, gridperson) Content Portals Shibboleth exchange of attributes Future PKI DoDHE et al. Future PKI Interrealm Security Domain Grids et al.

6 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/6 Vidmid VC VidMid VideoConferencing Goals: Enable authenticated and authorized call setup Work out architectural issues –Id, Authnz, Dir. + Resource discovery, security/PKI (for encryption, authentication, signing) –Both intra- and interrealm Identify infrastructure to support interrealm community video –H.323, SIP, VRVS/AG (multicast) Instigate client/gw development foster interoperability at identifier, security and video stream levels –Engage industry players

7 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/7 Vidmid VC status Workplan (from vidmid-vc workshop @ UNC, nov. 2001) Deliverables: Scenarios (Art Vandenberg GSU, Mary Fran Yafchak SURA, EV) Object Classes & Directory services (Tyler Johnson UNC, RadVision) See presentation Larry Amiot –Video-app directory –Implementation, directory of video-directoriesdirectory of video-directories –ITU standard Resource discovery whitepaper Framework of requirements, thread models and security services (Samir Chatterjee & Tyler Johnson)

8 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/8 Vidmid VC status, deliverables Derive flows and develop architecture for inter-realm authentication and authorization in a federated model –Conferencing attributes, endpoint authentication, datastream protection Testbeds –SURA CfP for SURA members

9 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/9 A&A call setup EP auth 1 GK/proxy server 2 reg. autz 3 Ent.p. autz ? Shibb? 4 5 autz 6 Ent.p. autz 7 8:OK media 9 1a & 2a

10 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/10 Areas for Joint R&D Networking –QoS for digvid applications (TF-NGN, I2 QoS) –Network analysis and simulation tools (TF-NGN, VideNet Scout, I2 e2e) –High-reliability architectures (TF-STREAM) –Multicast address space management (Geant) –IPv6 (6net wps) Middleware –Globally-scaleable H.323 number/dial plan & update (TF-STREAM, ViDe NASM) –Inter-gatekeeper communication (ViDeNet) –Security and authentication (I2 vidmid) –Directory services (I2 vidmid, ViDeNet, TF-LSD) Creation of video teleconferencing schema extensions (I2 vidmid)

11 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/11 Areas for Joint R&D Videoconferencing –Gateway development (I2 Commons) VRVS, AccessGrid (see next pres), MPEG-2, MJPEG –SIP & VoIP (many, vidmid, TERENA?) –Integration alternative media streams (I2, AccessGrid) e.g. MPEG-4 & HDTV & MJPEG) –Data collaboration tools (ViDe, AccessGrid) –(Semi)Automated scheduling (VRVS, AccessGrid, …) Streaming –VoD

12 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/12 Summary Vidmid on speed Deliverables ready Object classes White paper on authnz, resource discovery Near Future SIP clients Directory testbed Prepare And join

13 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/13 Background info, URLs & docs Vidmid website http://middleware.internet2.edu/video/ Workplan vidmid-vc http://middleware.internet2.edu/video/VidMid-VC-workplan-12-February-2002.html Scenarios (Art Vandenberg GSU, Mary Fran Yafchak SURA, EV) http://middleware.internet2.edu/video/draft-internet2-vidmid-vc-scenarios-02.html Object Classes & Directory services (Tyler Johnson UNC, RadVision) http://middleware.internet2.edu/video/draft-nmi-commObjectDefinition-00.doc http://middleware.internet2.edu/video/draft-nmi-commObjectWhitePaper-00.doc Resource discovery whitepaper (Art Vandenberg, GSU) http://middleware.internet2.edu/video/draft-internet2-vidmid-vc-resource-discovery- 01.txthttp://middleware.internet2.edu/video/draft-internet2-vidmid-vc-resource-discovery- 01.txt Directory of video-directories (ViDeNet) http://videnet.unc.edu/vide-dod/index.phtml

14 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/14 Enterprise Directory User data cn. commURI Gatekeeper Local endpoint tables Figure 1. Relationship of H323 LDAP components h323 LDAP Server commObject data. commUniqueId commOwner

15 4/25/2002ViDe/SURA ws, http://middleware.internet2.edu/video/15 H.323 authenticated call setup H.323: Terminals register with gatekeeper (H.225.0 RAS: registration, admission, status) Terminals call each other (H.225.0 Call signaling) audio/video traffic exchange (RTP) For authn: H.235 annex D (username/passwd), annex E (cert, PKI)


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