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SUMMARY:Privacy-Preserving 802.11 Access-Point Discovery - Janne Lindqvist
  - Helsinki University of Technology\, Finland
DTSTART:20090203T161500Z
DTEND:20090203T171500Z
UID:TALK16434@talks.cam.ac.uk
CONTACT:Joseph Bonneau
DESCRIPTION:It is usual for 802.11 WLAN clients to probe actively for acce
 ss points in order to hasten AP discovery and to find “hidden” APs. Th
 ese probes reveal the client’s list of preferred networks\, thus\, prese
 nt a privacy risk: an eavesdropper can infer attributes of the client base
 d on its associations with networks. We propose an access-point discovery 
 protocol that supports fast discovery and hidden networks while also prese
 rving privacy. Our solution is incrementally deployable\, efficient\, requ
 ires only small modifications to current client and AP implementations\, i
 nteroperates with current networks\, and does not change the user experien
 ce. We note that our solution is faster than the standard hidden-network d
 iscovery protocol based on measurements on a prototype implementation.
LOCATION:Lecture Theatre 2\, Computer Laboratory\, William Gates Building
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