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Media Distribution Management Platform and IPTV over Internet 2. Tereza Cristina Melo de Brito Carvalho carvalho@larc.usp.br Regina Melo Silveira regina@larc.usp.br LARC- Laboratory of Computer Network Architecture EPUSP – Escola Politecnica University of Sao Paulo - Brazil.

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Media Distribution Management Platform and IPTV over Internet 2


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    1. Media Distribution Management Platform and IPTV overInternet 2 Tereza Cristina Melo de Brito Carvalho carvalho@larc.usp.br Regina Melo Silveira regina@larc.usp.br LARC- Laboratory of Computer Network Architecture EPUSP – Escola Politecnica University of Sao Paulo - Brazil

    2. IPTV over Internet 2 Tereza Cristina Melo de Brito Carvalho carvalho@larc.usp.br Regina Melo Silveira regina@larc.usp.br LARC – PCS/EP – University of São PauloEricsson Research Sweden

    3. Marcio Augusto Lima e Silva msilva@larc.usp.br Flávio Urschei furschei@larc.usp.br Daniel Pires dpires@larc.usp.br Christiane Marie Schweitzer christiane.schweitzer@ufabc.edu.br Diego Sanchez Gallo dsgallo@larc.usp.br Regina Melo Silveira regina@larc.usp.br Tereza Cristina Melo de Brito Carvalho carvalho@larc.usp.br Wilson Vicente Ruggiero wilson@larc.usp.br Ayodele Damola ayodele.damola@ericsson.com Team Fall 2006 Internet 2 Member Meeting

    4. Agenda • Introduction • Scenario • Requirements • IPTV Architecture • IPTV over Internet2 • Final Considerations • Acknowledgments Fall 2006 Internet 2 Member Meeting

    5. Introduction • What is IPTV? • TV Channels over the Internet ? • Video streams encapsulated in IP packets over a “service provider” network ? • Will Internet support a High Definition IPTV Service? “Internet no ready for its future roles” (Bill St. Arnaud) Fall 2006 Internet 2 Member Meeting

    6. Scenario • High Definition Streamings (HDTV) • Typically, 25 Mbps per TV Channel for MPEG2 encoding • Multiple different channels sent simultaneously to multiple different receivers at a same location • A home with three TV sets would require at least 3 x 25 Mbps. Fall 2006 Internet 2 Member Meeting

    7. Scenario • IPTV requires high levels of Quality of Service (QoS) and Quality of Experience (QoE) at least on par with analog or digital TV broadcast system • Access networks technologies like xDSL will not support high definition IPTV services • VDSL has bandwidth and distance limitations. It achieves 50Mbps at 300m. Fall 2006 Internet 2 Member Meeting

    8. Scenario • Currently, FTTH (Fiber-To-The-Home) services seems to be only alternative for the fulfillment of IPTV (HDTV) needs • PON (Passive Optical Network) presents itself as the most viable FTTH technology, both from economical and operational standpoint • WDM-PON can provide 100Mbps fiber connection far beyond 300m – around tens of kilometers) Fall 2006 Internet 2 Member Meeting

    9. Requirements • Security • Content protection: protection of the intellectual property of the content owner, while allowing fair use for the final user. • Service protection: authentication, confidentiality and access control Fall 2006 Internet 2 Member Meeting

    10. Requirements • Quality of Experience (simple and convenient handling) • Multi-channel • Zapping • Infrastructure • Availability (at least on par with analog or digital TV broadcast system) • Accessibility (diversity of devices – e.g. PCs, Set-Top-Boxes) • Network/Application scalability Fall 2006 Internet 2 Member Meeting

    11. IPTV Architecture Fall 2006 Internet 2 Member Meeting

    12. Architecture Entities • Head-End: provides IPTV services (Broadcast TV and VoD) • Transport Network: delivers video streams to customers • Customer Premises: broadband network termination Fall 2006 Internet 2 Member Meeting

    13. IPTV Architecture: Head-End • Broadcast TV Head-End system: • Receives an analog or digital signal via satellite or other mean, typically with multiple transport streams • Converts it to a series of single program streams • Encodes or transcodes the signals (e.g. to MPEG-4 format) • Encapsulates streams in IP packets for transmission • Sends streams to a specific IP multicast group Fall 2006 Internet 2 Member Meeting

    14. IPTV Architecture: Head-End • VoD (Video-On-Demand) Head-End System: • Encapsulates video streams in IP packets • Sends streams to users Fall 2006 Internet 2 Member Meeting

    15. IPTV Architecture: Transport Network • Core Network • High capacity optical network with technologies such as IP over DWDM and MPLS/GMPLS • Edge Network • Multicast enabled network that connects the core network to the access network • Access Network • It is a FTTH-PON (Fiber-To-The-Home Passive Optical Network) Fall 2006 Internet 2 Member Meeting

    16. IPTV Architecture: Customer Premise • Provides broadband network termination functionalities • It is the IPTV service client • The heterogeneous technologies existing in a home network devices lead to the need for a robust Home Gateway to connect it providing the necessary services Fall 2006 Internet 2 Member Meeting

    17. Multicast X Overlay • Overlay tries to provide multicast functionalities on application layer • It is still a immature solution to provide a reliable and QoE enabled service for High-definition content with scalability • Multicast is proven to be a more efficient distribution scheme with scalability • This work proposes an auto-contained, controlled private network • Internet does (still) not provide the required levels of availability, scalability, QoE and QoS Fall 2006 Internet 2 Member Meeting

    18. Final Considerations • IPTV over Internet2 • HDTV over Internet with stringent QoS and QoE requirements it is not possible in the current infrastructure. • Due to QoE requirements (e.g. zapping), a bandwidth of hundreds of Mbps per service user (per subscriber) is required. Fall 2006 Internet 2 Member Meeting

    19. A Platform for Media Distribution Management Regina Melo Silveira regina@larc.usp.br LARC- Laboratory of Computer Network Architecture EPUSP – Escola Politecnica University of Sao Paulo - Brazil

    20. Agenda • Introduction • Our Challenge • Related Work • Proposal • Conceptual Model • Physical Model • Main Functionalities • General View • Work in Progress • Final Considerations Fall 2006 Internet 2 Member Meeting

    21. Introduction • Huge number of multimedia applications (documentation, advertisement, entertainment …); • New multimedia services (broadcast, telecommunications, CATV); • Convergence - services integration with access network independence; • Progressive demand of storage, distribution and consume management allowing largely media utilization and re-use. Fall 2006 Internet 2 Member Meeting

    22. Introduction • Multimedia services management includes: (i) multimedia content storage, retrieval and search; (ii) users and groups of users access control and authentication; (iii) system distribution, adaptation, configuration and monitoring (server and clients) to multimedia content delivery and consumption; (iv) network elements management. Fall 2006 Internet 2 Member Meeting

    23. Our Challenge • To develop a Platform forMedia Distribution Management respecting the following requirements: • Use open standards (ISMA, MPEG-7, MPEG-21); • Define integrated interfaces for different multimedia services already implanted at RNP network; • Prototype development and tests at RNP network. • At the prototype uses two multimedia distribution services developed by LAVID/UFPB: • dvod - video on demand • dlive – live video Fall 2006 Internet 2 Member Meeting

    24. Related Work • MUFFINS - MUltimedia Framework For INteroperability in Secure – IST • PERSEO - Personalised Multichannel Services for Advanced Multimedia Stream Management – IST • CODAC - Modeling and Querying Content Description and Quality Adaptation Capabilities of Audio-Visual Data - Klagenfurt University – Austria • ADMITS - Adaptation in Distributed Multimedia IT Systems - Klagenfurt University – Austria • DANAE - Dynamic and distributed Adaptation of scalable multimedia coNtent in a context Aware Environment – IST • iTVP - Interactive TV Services over IP Networks - PSNC – PIONNER • Rich Content Infrastructure and Middleware for Media - IBM Fall 2006 Internet 2 Member Meeting

    25. Proposal • 4 (four) users types • Client, • Content Provider, • Administrator, • Manager. • 4 (four) sub-systems • Portal; • Access control, storage and retrieval, • Manager (Coordinator and Monitor), • Transmitter (Multimedia delivery service). • 3 (three) management levels • Service, • Server, • Network. Fall 2006 Internet 2 Member Meeting

    26. Proposal – Conceptual Model Fall 2006 Internet 2 Member Meeting

    27. Proposal – Physical Model Fall 2006 Internet 2 Member Meeting

    28. Main Functionalities • Video Upload and Indexation • Live events Transmission registration • Media search • Media catalogue (Personalized) • Media Visualization (Personalized) • Users, groups and projects management • Applications/services (sections) management • Servers management • Network elements management Fall 2006 Internet 2 Member Meeting

    29. Fall 2006 Internet 2 Member Meeting

    30. General View – Overlay Network Services Layer Server Layer Network Layer Fall 2006 Internet 2 Member Meeting

    31. Fall 2006 Internet 2 Member Meeting

    32. Fall 2006 Internet 2 Member Meeting

    33. Work in Progress • Testing prototype • New functionalities and optimization • Video replication • Access control and distributed metadata • Multicast Overlay proposal adoption (for example, Overlay Multicast Control Protocol from IETF); • Adoption of management data models based on XML from Global Grid Fórum • Use of components model for Manager dynamic configuration update • Integration with measurement infrastructure and new services. Fall 2006 Internet 2 Member Meeting

    34. Final Considerations • Our project proposed/implemented: • Common infrastructure for multimedia services; • Architecture based on open standards allow uniform interfaces for all the applications; • Web-based Management system; • Resources Optimization; • Flexibility and scalability. • Service will be personalized for different context: • schools, hospitals e community and educational TVs. Fall 2006 Internet 2 Member Meeting

    35. Acknowledgements • Financial Support • RNP (National Education and Research Network) • Collaboration • Prof. Guido Lemos de Souza Filho – LAVID/DI/UFPB • Prof. José Augusto Suruagy Monteiro – UNIFACS Fall 2006 Internet 2 Member Meeting

    36. Applying Security in IPTV Environment Tereza Cristina Melo de Brito Carvalho carvalho@larc.usp.brLARC – PCS/EP – University of São PauloEricsson Research Sweden

    37. Christiane Marie Schweitzer christiane.schweitzer@ufabc.edu.br Daniel Pires dpires@larc.usp.br Diego Sanchez Gallo dsgallo@larc.usp.br Flávio Urschei furschei@larc.usp.br Marcio Augusto Lima e Silva msilva@larc.usp.br Regina Melo Silveira regina@larc.usp.br Tereza Cristina Melo de Brito Carvalho carvalho@larc.usp.br Wilson Vicente Ruggiero wilson@larc.usp.br Ayodele Damola ayodele.damola@ericsson.com Team Fall 2006 Internet 2 Member Meeting

    38. Agenda • Security Context (Application Layer and Network Layer) • Threats (Service and Content) • IPTV Security • Countermeasures • IPTV Policies • Final Considerations Fall 2006 Internet 2 Member Meeting

    39. Security Context • Application Level Security • On STB (Set-Top Box) video client, video services and content store. • Refereed as digital rights management (DRM) systems, enclosing conditional access, copy protection, encryption and watermarking. Fall 2006 Internet 2 Member Meeting

    40. Security Context • Network Level Security • On the content delivery architecture  confidentiality, integrity and availability of the data flows • prevention, • detection and • reaction. Fall 2006 Internet 2 Member Meeting

    41. Security Threats in Multimedia Communications [ITU-T 2003] Fall 2006 Internet 2 Member Meeting

    42. Threats • Service • Illegal service usage • Disruption of service • Content • An insider stealing content from the service core • A subscriber stealing content from the service core • A subscriber stealing content from the STB Fall 2006 Internet 2 Member Meeting

    43. Threats: Illegal service usage • Rogue subscription: An attacker gains access to broadband video services without a subscription. • Escalation of subscription: An attacker gains access to video services that are beyond the parameters of his/her subscription. Fall 2006 Internet 2 Member Meeting

    44. Threats : Disruption of service • Attack against other subscribers • The attacker attempts to disrupt the service for a specific subscriber or group of subscribers by directly acting on equipment that resides on the victim’s home network. • Attack against the access and transport infrastructure • The attacker attempts to disrupt the service by degrading the performance of one or several components of the architecture (access node, Broadband Service Aggregators, Broadband Service Routers, etc). • Attack against the video service core • The attacker directly targets the components that render the video services, such as the VoD servers. Fall 2006 Internet 2 Member Meeting

    45. Threats: Content • An insider stealing content from the service core • The thief is an insider, i.e., a service provider’s employee, who has easy access to the stored content. • A subscriber stealing content from the service core • Weaknesses in the broadband TV architecture allow the attacker (from his/her home network) to compromise the servers that host the content. • A subscriber stealing content from the STB • The attacker is a subscriber who wants to use the content acquired beyond his/her fair right of usage. Fall 2006 Internet 2 Member Meeting

    46. IPTV Security • Privacy • Confidentiality • Integrity • Availability • Interoperability Fall 2006 Internet 2 Member Meeting

    47. IPTV Security: Privacy • The Service Provider must handle customer information, without any personal identifiable information • The Service Provider must manage CPEs (Customer Premise Equipments) and it must not know if it belong to a customer, or how many equipments this customer has at home. Fall 2006 Internet 2 Member Meeting

    48. IPTV Security: Confidentiality • Video Content • The video must be transported encrypted • The content must be recorded protected • Authentication and authorization guarantees Fall 2006 Internet 2 Member Meeting

    49. IPTV Security: Integrity • The content cannot be modified • Multicast and unicast security • Content source security • Billing system integrity • Just authorized person should have access to billing system Fall 2006 Internet 2 Member Meeting

    50. IPTV Security: Availability • Can someone disrupt your IPTV service? - To what scale? • Any of the IPTV device could be vulnerable to Denial-of-Service attack • Buffer overflow • Weak TCP/IP or protocol stack implementation • If other service is down (Voice and Data) would it take down IPTV too? • System dependencies Fall 2006 Internet 2 Member Meeting