fi@hiit.fi HIIT’s Future Internet Research Programme

1. fi@hiit.fiHIIT’s Future Internet Research Programme Kimmo Raatikainen Programme Director: Future Internet kimmo.raatikainen@hiit.fi

2. FI Team • Director: Prof. Kimmo Raatikainen • Research co-ordinator: Oriana Riva • Seniors: • Adj. Prof. Patrik Floréen • Adj. Prof. Andrei Gurtov • Dr. Arto Karila • Dr. Kristiina Karvonen • Univ. Lect. Markku Kojo • Prof. Jukka Manner • Dr. Pekka Nikander • Dr. Ken Rimey • Adj. Prof. Sasu Tarkoma • Prof. Antti Ylä-Jääski

3. The Vision of the Future • User expectations: • Future applications and platforms will be context-sensitive, adaptive, and personalized • They need to be run, in a reasonable and secure manner, on a variety of execution environments: anywhere, anyhow, anytime, by anyone • Required system properties: • self-aware, distributable, reconfigurable, proactive, collaborative, secure, trusted, privacy providing, mobile, diversely accessible, extendable, incrementally deployable, resource-aware, …

4. Research Challenges in Future Internet • Research Challenges: • Security-Trust-Privacy • Mobile Always-on Connectivity • Scalable Open Service Architectures • Solutions are sought in distributed algorithms and structures, middleware, and protocols.

5. Dual Approach to Future Internet • Improving current Internet • Protocol enhancements: HIP, TCP, DCCP, SIP, etc • Overlay networks • Secure push • Starting from clean table • Publish-subscribe paradigm • Applying microeconomics and game theory

6. Current Projects PSIRP: Publish-Subscribe Internet Routing Paradigm AwissNet: Ad-hoc PAN & WIreless Sensor SEcure NETwork Finland-ICSI Center for Novel Internet Architectures UbiLife Trust for All Future Mobility Middleware Web Services In Ad Hoc and Mobile Infra M E R C O N E A B I I N H O N E T S Location Privacy and Authentication In Massively Distributed Systems Trustworthy Internet InfraHIP NordicHIP

7. Security-Trust-Privacy Andrei Gurtov Adj. Prof.

8. Research Challenges • Secure mobility and multihoming • Secure mapping between identifiers and locators • Efficiency and scalability of DHT and DNS systems • Eavesdropping/modification of network traffic • Lack of IPsec deployment • Denial-of-service attacks • Tracking user identity and location • Troubles of SSL/TLS certificate model • Email SPAM • Usability of security for a wide range of people • Interoperating IPv4 and IPv6 applications and networks

9. Main Achievements • Open-source implementation of Host Identity Protocol (HIPL) • Prevents eavesdropping and some DoS attacks • Secure mobility/multihoming, middlebox friendly • New IPsec mode integrated into standard Linux kernel • Chairing research group in IRTF, IETF drafts • Scalability and performance results of DHT/rendezvous systems using Planetlab testbed • International collaboration network (Berkeley, EU) • Article at Sigcomm’07 on Delegation-Oriented Network Architecture

10. Future Directions • Internal HIP deployment in the group’s computers • Secure VoIP architecture/demo using P2PSIP model • HIP on Platforms implementation (Symbian/Internet tablet) • IP security on lightweight devices • Applying game theory to model economic aspects of security • Evaluating security and mobility in DHTs • Distributed trust, discovery of trust paths in community • Usability evaluations with user experiments and interviews

11. Mobile Always-on Connectivity Jukka Manner Professor, PhD.

12. Research Challenges • Decentralized IP host mobility in radio mesh networks • Next generation network control signalling framework • Congestion controlled datagrams (DCCP) for VoIP • SIP-based services for mobile nodes • Heterogeneous traffic in heterogeneous multi-access environments • Reducing signaling overhead in wireless networks • Cross-layer design and inter-layer co-operation

13. Main Achievements • Many IETF contributions • World first high performance GIST implementation (C) • A new RSS push service for the N800 tablet based on SIP • Improvements to TCP congestion control for wireless and mobile environments using cross-layer design • Algorithms implemented in Linux TCP/IP stack • Brought Linux TCP stack into compliance with IETF specifications • DCCP code into the Linux kernel (forthcoming)

14. Future Directions • Continue work with • Next generation network signalling • DCCP and SIP • Advanced end host mobility in mesh networks • Transport protocol improvements in multi-access environments and vertical handoffs • New congestion control algorithms and transport protocols for heterogeneous traffic • Future Internet architectures • Implications of publish/subscribe paradigm • A topic of the Finland-ICSI Center

15. Scalable Open Service Architectures Sasu Tarkoma Adj. Prof.

16. Research Challenges • Evolution towards content-centric networking • Shift towards multicast/anycast messaging • Publish/subscribe for efficient asynchronous communication • Service delivery scalability to millions of customers • Communication and maintenance cost of services like YouTube are prohibitive • Peer-to-peer technologies can help reduce network and hosting costs and improve scalability • Architectures for easy and secure service access • Open, decentralized identity management (OpenID) • Seamless Sign-On and easy identity bootstrapping

17. Main Achievements • Middleware systems • Wireless SOAP, content-based router, XML-aware data synchronizer, mobile desktop search • Fuego and PDIS/S4All software used in other projects, also outside HIIT • Contributions to W3C Efficient XML Interchange Working Group, WWRF Service Architecture • Public demonstrations and presentations

18. Future Directions • Publish/Subscribe Internet Routing Paradigm • Develop new protocol stack for pub/sub data-centric routing and forwarding in Internet scale • EU FP7 STREP project PSIRP coordinated by HIIT • Data structures and algorithms for routing in overlay networks • Peer-to-peer video-on-demand and video streaming • BitTorrent for browsers • Mobile AJAX: Asynchronous mobile applications • Social networks and incentives for peer-to-peer • Content-centric networking for social collaborative peer-to-peer web