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Wireless Local Area Networks (WLANs) for public access need to provide privacy between users and also ensure correct charging where access is based on payment. However, by design, conventional LANs and WLANs provide direct, unmediated communications between networked devices at the link layer. The paper presents a method to allow networked client devices to communicate with a network comprising routers and other servers while preventing unmediated communication between the clients on thedoi:10.1109/pimrc.2002.1047369 dblp:conf/pimrc/Haverinen02 fatcat:sdwvpfqymjb5rg4vaejbwqd5ga