talweg, a wireless captive portal The usuals solutions authorise access on the basis of specific parameters (IP address, MAC address) that can be easily imitated. Consequently, there is a risk that a dishonest user usurps the identity of a network user. As an effective solution to this problem, a new form of captive portal - called talweg - has been developed at the University of Metz (France). [http://sourcesup.cru.fr/talweg/]
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