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Lehrende_HAW_Hamburg_27

Studierende_HAW_Hamburg_25

Informationen für:

Publikationen von Professorinnen und Professoren der HAW Hamburg

Jahr:  
Alle : 2007, 2008
Autor:  
Alle : A, À, B, C, D, E, F, G, H, I, J, K, L, M, N, O, Ö, P, Q, R, S, T, U, V, W, Y, Z 
Alle : C. Schmidt, ... , Chowdhury, Christ, Christensen, ... , Czischke 
Präferenzen: 
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Referenzen

Zeitschriftenbeiträge:

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Olaf Christ, Thomas C. Schmidt und Matthias Wählisch
Towards Seamless Source Mobility in SSM - Design and Evaluation of the Tree Morphing Protocol
International Journal of Internet Protocol Technology (IJIPT), 3(4):205--215
2008

Marker: TI-I

Zusammenfassung: Multimedia networking in the near future is expected to be dominated by group applications such as IPTV, MMORPGs, and video conferencing. Hand in hand with new service offers, the deployment of multicast at the network layer started to disseminate. Currently infotainment is gradually expanding into the mobile world, but a standard design of mobile multicast is still awaited. In this paper we present a design and discuss an extensive evaluation of the Tree Morphing Protocol that performs an adaptive tree management to support seamless handovers for mobile SSM sources. Based on a full protocol implementation on a network simulator platform, we extensively explore the protocol performance. By employing artificial networks to cover fundamental topological constellations, as well as real-world network topologies, we analyze the handover behavior conceptually and in realistic scenarios. Strengths and weaknesses of the routing scheme are identified, leading to a discussion on future improvements.

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Thomas C. Schmidt, Matthias Wählisch, Olaf Christ und Gabriel Hege
AuthoCast --- a mobility-compliant protocol framework for multicast sender authentication
Security and Communication Networks, 1(6):495 -- 509
2008

Marker: TI-I

Zusammenfassung: Mobility is considered a key technology of the next generation Internet and has been standardized within the IETF. Rapidly emerging multimedia group applications such as IPTV, MMORPGs and video conferencing increase the demand for mobile group communication, but a standard design of mobile multicast is still awaited. The open problem poses significant operational and security challenges to the Internet infrastructure. This paper introduces a protocol framework for authenticating multicast sources and securing their mobility handovers. Its contribution is twofold: At first, the current mobile multicast problem and solution spaces are summarized from the security perspective. At second, a solution to the mobile source authentication problem is presented that complies to IPv6 mobility signaling standards. Using an autonomously verifiable one-way authentication based on cryptographically generated addresses, a common design is derived to jointly comply with the mobile any source and source specific multicast protocols that are currently proposed. This light-weight scheme smoothly extends the unicast enhanced route optimization for mobile IPv6 and adds only little overhead to multicast packets and protocol operations.

Konferenz, Symposium, Vortragsreihe, Einzelausstellung, Modenschau, Künstl. Leitung (als Ausrichter):

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Thomas C. Schmidt, Olaf Christ und Matthias Wählisch
Autonome Zertifizierung mobiler Multicast-Sender -- AuthoCast --
Endausscheidung für den Deutschen IT Sicherheitspreis 2008
Horst Görtz Stiftung
FhI SIT Darmstadt

Marker: TI-I

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Thomas C. Schmidt, Matthias Wählisch und Olaf Christ
AuthoCast --- A Protocol for Mobile Multicast Sender Authentication
David Taniar Gabriele Kotsis und Ismail Khalil (Hrsg.) MoMM 2008 - 6th International Conference on Advances in Mobile Computing & Multimedia , Seite 142--149.
ACM
Verlag: ACM, Linz, AU

Marker: TI-I

Zusammenfassung: Mobility is considered a key technology of the next generation Internet and has been standardized within the IETF. Rapidly emerging multimedia group applications such as IPTV, MMORPGs and video conferencing increase the demand for mobile group communication, but a standard design of mobile multicast is still awaited. The open problem poses significant operational and security challenges to the Internet infrastructure. This paper introduces a protocol framework for securing mobility handovers of multicast sources. Using an autonomously verifiable, one-way authentication based on cryptographically generated addresses, a common design is derived to jointly comply with the mobile any source and source specific multicast protocols that are currently proposed. This light-weight scheme smoothly extends the unicast enhanced route optimization for mobile IPv6 and adds only little overhead to multicast packets and protocol operations.

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Olaf Christ, Thomas C. Schmidt und Matthias Wählisch
Towards Seamless Handovers in SSM Source Mobility - An Evaluation of the Tree Morphing Protocol
Khalid Al-Begain und Antonio Cuevas (Hrsg.) IEEE NGMAST'08, Intern. Workshop on Future Multimedia Neworking - FMN'08 , Seite 456--461.
IEEE
Verlag: IEEE Computer Society Press, Cardiff, UK

Marker: TI-I

Zusammenfassung: Multimedia networking in the near future is expected to be dominated by group applications such as IPTV. Driven by new services, multicast at the network layer started to disseminate. Currently infotainment is expanding into the mobile world, but a standard design of mobile multicast is still awaited. In this paper, we design and discuss the Tree Morphing (TM) protocol that adaptively manages trees to support seamless handovers for Source Specific Multicast (SSM) sources. Based on a full simulator implementation, we extensively explore its performance. By employing artificial networks, as well as real-world topologies, we analyse the handover behaviour conceptually and in realistic scenarios.

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Letzte Änderung: 23.01.15

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