An Edge switch. The edge switch includes a first module configured to receive multiple coupling signals from at least one user node. a second module, and a log. For each coupling signal, the coupling signal indicates coupling one of the at least one user nodes to one of at least one target nodes via one of at least one proxy servers, the first module is configured to determine an identity of the one of the at least one user nodes and an identity of the one of the at least one target nodes from the coupling signal, and the second module is configured to record the identity of the one of the at least one user nodes, the identity of the one of the at least one target nodes, and date and time at which the coupling signal was processed by the edge switch in an entry in the log.