France Telecom

Orange

Laurent Butti

Olivier Charles

Daniel Migault

Franck Veysset

Eric Leclerq

The invention concerns the detecting of a double attachment of an equipment communicating both with a wireless network and with a wired network, in particular when the connections with said networks are established by sending a connection configuration request comprising an identifier of the equipment, such as DHCP Host Name. The invention is characterized in that it consists: a) in detecting, at least on the wireless network, connection configuration requests emitted by the equipments (E), b) analyzing the contents of the requests and extracting the equipment identifiers (E), c) from one equipment identifier extracted at step b), determining whether said equipment has additionally sent a connection configuration request at least to the wired network with the same identifier (E), and d) triggering an alarm if the result at step c) is positive (E).

Detecting double attachment between a wired network and at least one wireless network

The invention relates to a method in particular enabling the computer terminal (T_L) of a local network (RES_L), connected to a gateway (PASS_D) of a remote network (RES_D) by an IPsec tunnel in blocking mode, to launch a print job on a printer (E_L) belonging to the local network. To do this, the gateway (PASS_D) stores the correspondence between the public address (AD_1) of the local router (ROUT_L) providing the connection of the terminal to the Internet, and the private address (ad_3) assigned to the terminal (T_L) in the addressing plan of the remote network (RES_D) during the establishment of the tunnel, and sends the print flow to the local router (ROUT_L), which directs it to the local printer (E_L) by a port translation technique.

Method for operating a local computer network connected to a remote private network by an IPsec tunnel, software module and IPsec gateway

Disclosed is a method and system for controlling access of a source terminal to a network that includes, in particular, a firewall and an authentication portal that maintains the firewall during an access request originating from the source terminal and which permits access when periodically and subsequently provided with a valid authentication token. The source terminal can also communicate in tunnel mode with the destination terminal of the network via a block mode tunnel. Authentication tokens are periodically supplied on the OSI Layer 2 level so that the tokens continue to be provided during a block tunnel mode communication. A network operator can maintain access control using a captive portal paradigm even when a user chooses to use a block mode tunnel.

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Issy les Moulineaux, France

Laurent Butti