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Freeband Test bed: playground for wireless communications in the Netherlands
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  1. Freeband Test bed: playground for wireless communications in the Netherlands erik.dobbelsteijn@surfnet.nl 6 May 2003

  2. Vision on Wireless • WIFI is booming • Wireless arena more and more heterogeneous + • Risk: promise of mobility at stake! • Vertical roaming and cross-domain authentication more and more important

  3. Test bed within Freeband Freeband KennisImpuls Freeband Chair: Patrick de Wilde Secr: Daan Velthausz Steering Group Steering Group Industry and science leaders Industry and Science leaders RPT Application Program RPTA Test bed Programme Research Programmme on Telecommunication Applications Research Programme on Telecommunications Committee Telematica Instituut STW SURFnet Telematica Instituut Chair: Hermen vd Lugt Secr: Ferial Moelaert Chair: Egbert-Jan Sol Secr: Frank Karelse Chair: Kees Neggers Secr: Erik Dobbelsteijn

  4. Test bed goals • Acceleration of introduction of new advanced wireless services in the Netherlands: • Open playground for development of applications and middleware • Integration of Freeband experiments • Up scaling of promising technologies • public tendering • matching funding

  5. Test bed activities • Public wireless access • Mobility • Seamless handovers • Transparent roaming • Mobile IP • IPv6 • DIAMETER • AA and security • New wireless technologies (802.11g etc) • Project interaction

  6. Public wireless Hotspots • Call for Proposals • Experimental service • Wireless IP connectivity for 500,000 users • Standardized: 802.11b, 802.1X, IP • Modularity authentication-mechanisms

  7. Wireless Access to the GigaPort network Partners: Cisco Systems and BT Backbone: 10 Gbit/s 80 customer connections 1 Gbit/s Dual stack IPv4 and IPv6

  8. Wireless transparency International connectivity • institutional • network • Wireless • LAN Access Provider WLAN GigaPort Backbone • institutional • network Access Provider GPRS • Wireless • LAN Access Provider dialin Access Provider ADSL

  9. Wireless transparency • User has several access providers • For each access provider other ‘credentials’ • Each access network is different (IP address, NAT, firewall etc) + • Roaming is difficult

  10. Authentication architecture: IEEE 802.1X • Standardized architecture • Extensible Authentication Protocol: any authentication mechanism is possible • Client software (WinXP) • RADIUS backend: • Authentication from home network • Scalable • Distributed • Trust relationships • Wireless path encryption with dynamic keys

  11. How roaming works Authenticator (AP, switch) RADIUS server Institution A RADIUS server Institution B User DB User DB  user in hotspot or any institution Internet Central RADIUS Proxy server signalling data

  12. Status of 802.1X in the Netherlands • 802.1X equipment widely available • Deployment: • Ready at UTwente and HvA • Trials at RuG, VU, TuD, KUN, UvT, UU and HvU • Investigations by Fontys and INHOLLAND • fixed/wireless transparancy at UT, TuD and VU • Contract discussions with 802.1X-enabled WISP

  13. Test bed status • Public wireless access • Mobility • Additional projects

  14. More info • Freeband test bed • http://www.freeband.nl/testbed • SURFnet • http://www.surfnet.nl • Wireless Projects • http://www.surfnet.nl/innovatie/wlan • 802.1X • http://standards.ieee.org/reading/ieee/std/lanman/802.1X-2001.pdf • IETF RFC’s: see www.ietf-editor.org • EAP RFC 2284 • EAP-MD5 RFC 1994, RFC 2284 • EAP-TLS RFC 2716 • EAP-TTLS http://www.funk.com/NIdx/draft-ietf-pppext-eap-ttls-01.txt • PEAP http://www.globecom.net/ietf/draft/draft-josefsson-pppext-eap-tls-eap-02.html • RADIUS RFC 2865, 2866, 2867, 2868, 2869 (I/w EAP)