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Institut für Informatik
Georg-August-Universität Göttingen
                                                                                               
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Dipl.-Ing. Hannes Tschofenig

Position:   Gastdozent
Telefon:   +358 50 4871445
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Email:   Hannes.Tschofenig a nsn.com


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Hannes Tschofenig is a Senior Research Scientist at Nokia Siemens Networks and guest lecturer at the University of Goettingen. He currently co-chairs IETF dime, ecrit and keyprov working groups, and has co-authored the following RFCs:
  • rfc3726, Requirements for Signaling Protocols
  • rfc4081, Security Threats for Next Steps in Signaling (NSIS)
  • rfc4230, RSVP Security Properties
  • rfc4279, Pre-Shared Key Ciphersuites for Transport Layer Security (TLS)
  • rfc4442, Bootstrapping Timed Efficient Stream Loss-Tolerant Authentication (TESLA)
  • rfc4484, Trait-based Authorization Requirements for the Session Initiation Protocol (SIP)
  • rfc4487, Mobile IPv6 and Firewalls: Problem Statement
  • rfc4507, Transport Layer Security (TLS) Session Resumption without Server-Side State
  • rfc4589, Location Type Registry
  • rfc4621, Design of the IKEv2 Mobility and Multihoming (MOBIKE) Protocol
  • rfc4745, Common Policy: A Document Format for Expressing Privacy Preferences
  • rfc4764, The EAP-PSK Protocol: A Pre-Shared Key Extensible Authentication Protocol (EAP) Method
  • rfc4806, Online Certificate Status Protocol (OCSP) Extensions to IKEv2
  • rfc4891, Using IPsec to Secure IPv6-in-IPv4 Tunnels
  • rfc5069, Security Threats and Requirements for Emergency Call Marking and Mapping
  • rfc5077, Transport Layer Security (TLS) Session Resumption without Server-Side State
  • rfc5106, The Extensible Authentication Protocol-Internet Key Exchange Protocol version 2 (EAP-IKEv2) Method
  • rfc5191, Protocol for Carrying Authentication for Network Access (PANA)
  • rfc5222, LoST: A Location-to-Service Translation Protocol
  • rfc5223, Discovering Location-to-Service Translation (LoST) Servers Using the Dynamic Host Configuration Protocol (DHCP)



  • Research Projects

    Stud.Projekte

    Publikationen

    Disclaimer: These papers are made available as a means to ensure timely dissemination of scholarly and technical work on a non-commercial basis. Copyright and all rights therein are maintained by the authors or by other copyright holders, notwithstanding that they have offered their works here electronically. It is understood that all persons copying this information will adhere to the terms and constraints invoked by each author's copyright. These works may not be reposted without the explicit permission of the copyright holder.

    2009
    Overhead and Performance Study of the General Internet Signaling Transport (GIST) Protocol, Xiaoming Fu, Henning Schulzrinne, Hannes Tschofenig, Christian Dickmann, and Dieter Hogrefe, ACM/IEEE Transactions on Networking, 17(1): 158-171, February 2009.
    Zusammenfassung lesen PDF [210.7 kB]

    2008
    Performance Study of the NSIS QoS-NSLP Protocol, Mayutan Arumaithurai, Xiaoming Fu, Bernd Schloer, and Hannes Tschofenig, The 51th Annual IEEE Global Telecommunications Conference (GLOBECOM 2008), Next Generation Networks, Protocols, and Services Symposium, New Orleans, LA, USA, IEEE, December 2008.
    Zusammenfassung lesen PDF [328.7 kB]

    GIST State Machine, Tseno Tsenov, Hannes Tschofenig, Xiaoming Fu, Cedric Aoun, and Elwyn Davies, Internet Engineering Task Force, Internet draft (draft-ietf-nsis-ntlp-statemachine-05), work in progress, Next Steps in Signaling (NSIS) Working Group, November 2008.
    Zusammenfassung lesen PDF [633.8 kB]

    Applicability Statement of NSIS Protocols in Mobile Environments, Takako Sanda, Xiaoming Fu, Seong-Ho Jeong, Jukka Manner, and Hannes Tschofenig, Internet Engineering Task Force, Internet draft (draft-ietf-nsis-applicability-mobility-signaling-10), work in progress, Next Steps in Signaling (NSIS) Working Group, April 2008.
    Zusammenfassung lesen TXT [85.8 kB]

    NAT/Firewall NSIS Signaling Layer Protocol (NSLP), Martin Stiemerling, Hannes Tschofenig, Cedric Aoun, and Elwyn Davies, Internet Engineering Task Force, Internet draft (draft-ietf-nsis-nslp-natfw-18), work in progress, Next Steps in Signaling (NSIS) Working Group, February 2008.
    Zusammenfassung lesen TXT [195.5 kB]

    Spam Score for SIP, D. Wing, S. Niccolini, Martin Stiemerling, and Hannes Tschofenig, Internet draft (work in progress), IETF, February 2008.
    Zusammenfassung lesen TXT [14.5 kB]

    2007
    An NSIS-based Approach for Firewall Traversal in Mobile IPv6 Networks, Niklas Steinleitner, Xiaoming Fu, Dieter Hogrefe, Thomas Schreck, and Hannes Tschofenig, Third Annual International Wireless Internet Conference (WICON 2007), Austin, Texas, USA, ACM Press, October 2007.
    Zusammenfassung lesen PDF [372.2 kB]

    2006
    Beyond QoS Signaling: a Generic IP Signaling Framework, Xiaoming Fu, Hannes Tschofenig, and Dieter Hogrefe, Computer Networks, Volume 50, Issue 17, pages 3416-3433, Elsevier, December 2006.
    Zusammenfassung lesen PDF [602.3 kB]

    Securing the Next Steps in Signalling (NSIS) Protocol Suite, Hannes Tschofenig, and Xiaoming Fu, International Journal of Internet Protocol Technology, Volume 1, No. 4, pages 271-282, InderScience Publishers, ISSN 1743-8209, August 2006.
    Zusammenfassung lesen PDF [431.5 kB]

    Implementation and Performance Study of a New NAT/Firewall Signaling Protocol, Niklas Steinleitner, Henning Peters, Xiaoming Fu, and Hannes Tschofenig, in Proceedings of the 26th International Conference on Distributed Computing Systems-Workshops (ICDCSW 2006), the 5th International Workshop on Assurance in Distributed Systems and Networks (ADSN2006), Lisboa, Portugal, IEEE Computer Society, ISBN 0-7695-2541-5, July 2006.
    Zusammenfassung lesen PDF [394.6 kB]

    Overhead and Performance Study of the General Internet Signaling Transport (GIST) Protocol, Xiaoming Fu, Henning Schulzrinne, Hannes Tschofenig, Christian Dickmann, and Dieter Hogrefe, IEEE INFOCOM 2006, Bacelona, Spain, IEEE, April 2006.
    Zusammenfassung lesen PDF [181.9 kB]

    Comparison Studies between Pre-Shared and Public Key Exchange Mechanisms for Transport Layer Security, Fang-Chun Kuo, Hannes Tschofenig, Fabian Meyer, and Xiaoming Fu, Proceedings of the 9th IEEE Global Internet Symposium, in conjunction with IEEE INFOCOM 2006, Barcelona, Spain, pages 77-82, IEEE, ISBN 3-937201-01-7, April 2006.
    Zusammenfassung lesen PDF [331.4 kB]

    Comparison Studies between Pre-Shared Key and Public Key Exchange Mechanisms for Transport Layer Security (TLS), Fang-Chun Kuo, Hannes Tschofenig, Fabian Meyer, and Xiaoming Fu, Technical Report No. IFI-TB-2006-01, Institute of Computer Science, University of Göttingen, Göttingen, Germany, ISSN 1611-1044, 2006.
    Zusammenfassung lesen PDF [357.6 kB]

    2005
    A Quality-of-Service Resource Allocation Client for CASP, Henning Schulzrinne, Hannes Tschofenig, Xiaoming Fu, and Jochen Eisl, Technical Report No. TB-IFI-2005-07, Institute of Computer Science, University of Goettingen, Germany, ISSN 1611-1044, November 2005.
    Zusammenfassung lesen PDF [99.8 kB]

    Security Implications of the Session Identifier, Hannes Tschofenig, Henning Schulzrinne, Robert Hancock, Andrew McDonald, and Xiaoming Fu, Technical Report No. TB-IFI-2005-08, Institute of Computer Science, University of Goettingen, Germany, ISSN 1611-1044, November 2005.
    Zusammenfassung lesen PDF [79.7 kB]

    NSIS: A New Extensible IP Signaling Protocol Suite, Xiaoming Fu, Henning Schulzrinne, Attila Bader, Dieter Hogrefe, Cornelia Kappler, Georgios Karagiannis, Hannes Tschofenig, and Sven Van den Bosch, IEEE Communications Magazine, Internet Technology Series, 43(10): 133-141, IEEE, October 2005.
    Zusammenfassung lesen PDF [159.9 kB]

    Towards Self-optimizing Protocol Stack for Autonomic Communication: Initial Experience, Xiaoyuan Gu, Xiaoming Fu, Hannes Tschofenig, and Lars Wolf, In: Ioannis Stavrakakis and Michael Smirnov (eds), Proceedings of 2nd IFIP International Workshop on Autonomic Communication (WAC 2005), Athens, Greece, Lecture Notes in Computer Science, Volume 3854, pages 186-201, Springer-Verlag, October 2005.
    Zusammenfassung lesen PDF [296.8 kB]

    Advanced Authentication and Authorization for Quality of Service Signaling, Tseno Tsenov, Hannes Tschofenig, Xiaoming Fu, and Eckhart Koerner, 1st IEEE Workshop on Security and QoS in Communication Networks (SecQoS 2005), Athens, Greece (in conjunction with the first IEEE International Conference on Security and Privacy for Emerging Areas in Communication and Networks - SECURECOM 2005), Pages 224-235, IEEE Computer Society Press, September 2005.
    Zusammenfassung lesen PDF [959.2 kB]

    Enabling Mobile IPv6 in Operational Environments, Xiaoming Fu, Hannes Tschofenig, Srinath Thiruvengadam, and Wenbing Yao, in: Pascal Lorenz (ed), Proceedings of the 10th IFIP International Conference on Personal Wireless Communications (PWC 2005), Colmar, France, pp. 365-372, Imperial College Press, ISBN 1-86094-582-1, August 2005.
    Zusammenfassung lesen PDF [162.4 kB]

    2003
    Mobility Support for Next-Generation Internet Signaling Protocols, Xiaoming Fu, Henning Schulzrinne, and Hannes Tschofenig, Proceedings of the IEEE 58th Vehicular Technology Conference (VTC 2003-Fall), Orlando, Florida, USA, pp. 1979-1983, Symposium on IP Mobility, IEEE, ISBN 0-7803-7954-3, October 2003.
    Zusammenfassung lesen PDF [75.9 kB]

    CASP - Cross-Application Signaling Protocol, Henning Schulzrinne, Hannes Tschofenig, Xiaoming Fu, and Andrew McDonald, Technische Berichte des Instituts für Informatik an der Georg-August-Universität Göttingen, Institut für Informatik, Georg-August-Universität Göttingen, Germany, ISSN 1611-1044, IFI-TB-2003-01, (equivalent to the Internet draft), March 2003.
    Zusammenfassung lesen PDF [103.1 kB]

    2002
    Analysis on RSVP Regarding Multicast, Xiaoming Fu, Cornelia Kappler, and Hannes Tschofenig, Technische Berichte des Instituts für Informatik an der Georg-August-Universität Göttingen, Institut für Informatik, Georg-August-Universität Göttingen, Germany, ISSN 1611-1044, IFI-TB-2002-001, October 2002.
    Zusammenfassung lesen PDF [335.7 kB]



     
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