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DTSTAMP:20260520T093406Z
CREATED:20081103T121323Z
UID:ATEvent-de06f1377b4532084d2ec9b26388bd53
LAST-MODIFIED:20100210T171551Z
SUMMARY:UTM Lab meeting\: Fast Handovers in 802.11 with 802.1X Reauthentications
DTSTART:20090312T140000Z
DTEND:20090312T150000Z
DESCRIPTION:Resumo\:\nThe talk is about a fast\, secure handover proto
 col for 802.11 networks.\nThe protocol keeps the security functionalit
 ies of 802.1X but uses a new\nreauthentication protocol that promotes 
 fast handovers during\nreassociations. The reauthentication protocol r
 ecovers the original\n802.11 paradigm\: authenticate first\, reassocia
 te next. Following this\nparadigm\, two new 802.11 authentication and 
 reassociation protocols\nwhere conceived\, which allow a mobile statio
 n to perform 802.1X\nreauthentications before reassociations with the 
 same functionality of a\ncomplete 802.1X authentication. Furthermore\,
  reassociation protocols are\nauthenticated\, preventing denial-or-ser
 vice scenarios that are not\nhandled by 802.11i. This novel approach r
 equires little from the\nenvironment\, namely a new\, central Reauthen
 tication Service\, for storing\ndata used in the reauthentication of s
 tations. The time of\nsecurity-related tasks that contribute to handov
 er delays was\ndramatically reduced to 1.5~ms\, while an 802.1X fast r
 esume takes more\nthan 150~ms. Finally\, the new protocol addresses mo
 st design goals and\nproblems stated by standards' working groups for 
 fast\, secure roaming in\n802.11.
LOCATION:INESC Porto\, Sala 4.26
CATEGORIES:Lab Meeting
CONTACT:Paulo Mendes\, pmendes@inescporto.pt
CLASS:PUBLIC
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