Abstract: Firewall system for interconnecting a first IP network (10) to a second IP network (16), these networks belonging to two different entities having each a different administration wherein any data packet transmitted/received by the first IP network is filtered by using a first firewall function and any data packet transmitted/received by the second IP network is filtered by using a second firewall function. The system comprises essentially a single firewall device (20) including filtering means (41, 43) performing both first firewall function and second firewall function, a console port (37) enabling the administrator in charge of each IP network to enter filtering rules for updating the associated firewall function and control means (39, 47, 49) interconnecting the console port and the filtering means for transmitting thereto the filtering rules so that each administrator may independently manage the system from the console port.

Abstract: Firewall system for interconnecting a first IP network (10) to a second IP network (16), these networks belonging to two different entities having each a different administration wherein any data packet transmitted/received by the first IP network is filtered by using a first firewall function and any data packet transmitted/received by the second IP network is filtered by using a second firewall function. The system comprises essentially a single firewall device (20) including filtering means (41, 43) performing both first firewall function and second firewall function, a console port (37) enabling the administrator in charge of each IP network to enter filtering rules for updating the associated firewall function and control means (39, 47, 49) interconnecting the console port and the filtering means for transmitting thereto the filtering rules so that each administrator may independently manage the system from the console port.

Abstract: A method including formatting an advertisement message having a dedicated preferred route to one of a first physical entity and a first logical entity of a first autonomous system (“AS”), the dedicated preferred route being based on at least two routing attributes, and transmitting the advertisement message from the first AS to a second AS. A routing device including a formatting module formatting an advertisement message having a dedicated preferred route to one of a first physical entity and a first logical entity of a first autonomous system (“AS”), the dedicated preferred route being based on at least two routing attributes, and a transmitting module transmitting the advertisement message from the first AS to a second AS.

Abstract: Method for performing the analysis of the characteristics of a data path from a first data processing device to a second data processing device through a network comprising at least an autonomous system consisting in defining a scenario file the scenario to be used, such a scenario including the actions to be used, building a parameter file defining the parameters to be used in the actions, running at least one analysis module based upon the actions of the scenario file and the parameters of the parameter file, the analysis module calling at least a predefined information requesting procedure, and storing in at least an output file the data resulting from the running of the analysis modules

Abstract: Method of managing the exchange of a file from a sender (13) to a receiver (12, 15) in a data transmission network (10, 11) wherein any user amongst a plurality of users can send an electronic mail with at least an attached file to at least another user. The method comprises the following steps: the original file corresponding to the file to be sent as an attachment to the electronic mail is forwarded by the sender to a file server (14), a substitute file including at least data identifying the original file is sent by the file server back to the sender upon receiving the original file, the substitute file is attached to the electronic mail before sending this one by the sender to the receiver, and the receiver gets, at anytime, the original file from the file server by providing the file server with the parameters of the substitute file.

Abstract: Certain exemplary embodiments provide a method for converting data packets based upon IPv4 protocol into data packets based upon IPv6 protocol, said method comprising converting any data packet based upon the IPv4 protocol into a data packet based upon the IPv6 protocol before transmitting it to an IP switched network using information provided by an external server, and converting any data packet based upon the IPv6 protocol provided by said IP switched network into a data packet based upon the IPv4 protocol before transmitting it to a first or second workstation.

Abstract: Data transmission system including at least a data transmission network (10, 12), at least a server (29), a plurality of users (16, 18, 20) able to be connected to the server in order to get data from it and at least a user being able to initiate a denial of service attack, the system further including a security network manager (30) and at least a detecting device for detecting abnormal operating conditions with respect to an operation of the system defined by predetermined parameters and transmitting detection messages to the security network manager, the security network manager activating filtering actions upon receiving the detection messages.

Abstract: Data transmission system based upon the Internet protocol (IP) comprising a private transmission network (18) and a public transmission network or the like (16) interconnected by a network address translation device NAT (12) wherein at least a workstation WS (10) connected to said private transmission network has to establish a communication with a peer device (14) connected to the public transmission network, the local IP address of each data packet from the workstation WS being translated into a NAT address used to provide the route through the public transmission network. The system includes a registration server (19) connected to the public transmission network for registering the local IP address corresponding to the NAT address and providing the correspondence between the NAT address and the local IP address to the peer device in order for this one to replace in the IP header of each data packet received by the peer device, the NAT address by the local IP address.

Abstract: Method of gaining secure access from a host (13) to Intranet resources provided by at least a content server (18) in a data transmission system wherein the host is connected to the content server through a gateway (17). Such a method consists in generating and sending at predetermined transmission instants from either the host or the gateway verification messages wherein each verification message contains a signature which depends upon the data exchanged between the host and the gateway since the preceding verification message, the host and the gateway also called peer devices having at their disposal a same algorithm defining which of them sends a verification message at each of the predetermined instants.

Abstract: Firewall system for interconnecting a first IP network (10) to a second IP network (16), these networks belonging to two different entities having each a different administration wherein any data packet transmitted/received by the first IP network is filtered by using a first firewall function and any data packet transmitted/received by the second IP network is filtered by using a second firewall function. The system comprises essentially a single firewall device (20) including filtering means (41, 43) performing both first firewall function and second firewall function, a console port (37) enabling the administrator in charge of each IP network to enter filtering rules for updating the associated firewall function and control means (39, 47, 49) interconnecting the console port and the filtering means for transmitting thereto the filtering rules so that each administrator may independently manage the system from the console port.

Abstract: Data transmission system comprising a help desk workstation (100) provided with the Telnet client function and connected to a Wide Area Network WAN (115) and to the Public Switched Telephone Network PSTN (130), and a Telnet manageable device (120) not provided with a modem and to which the help desk workstation may gain access by using the Telnet protocol. The system comprises a data processing device (110) provided with the proxy function and being connected to the PSTN and to the Telnet manageable device by the intermediary of a Local Area Network LAN (125), the data processing device including proxy means for completing a first Telnet connection with the help desk workstation through the PSTN and for establishing a second Telnet connection with the Telnet manageable device upon receiving a request from the help desk workstation to gain the Telnet access to the Telnet manageable device.