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Greenpass: Flexible and Scalable Authorization for Wireless Networks
Sean Smith, Nicholas C. Goffee, Sung Hoon Kim, Punch Taylor, Meiyuan Zhao, John Marchesini
Dartmouth TR2004-484

Abstract: Wireless networks break the implicit assumptions that supported authorization in wired networks (that is: if one could connect, then one must be authorized). However, ensuring that only authorized users can access a campus-wide wireless network creates many challenges: we must permit authorized guests to access the same network resources that internal users do; we must accommodate the de-centralized way that authority flows in real universities; we also must work within standards, and accommodate the laptops and systems that users already have, without requiring additional software or plug-ins.

This paper describes our ongoing project to address this problem, using SPKI/SDSI delegation on top of X.509 keypair within EAP-TLS. Within the ``living laboratory'' of Dartmouth's wireless network, this project lets us solve real problem with wireless networking, while also experimenting with trust flows and testing the limits of current tools.


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   Sean Smith, Nicholas C. Goffee, Sung Hoon Kim, Punch Taylor, Meiyuan Zhao, and John Marchesini, "Greenpass: Flexible and Scalable Authorization for Wireless Networks." Dartmouth Computer Science Technical Report TR2004-484, January 2004.


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