Abstract: A method for operating a communications system, in particular a communications system based on software-defined networking, which has at least one network infrastructure component, in particular an SDN switch, and at least one communications device, the network infrastructure component being developed for forwarding data to and/or from the at least one communications device. The method includes the following steps: allocating the communications device to at least one security zone; specifying at least one forwarding rule for forwarding data by the network infrastructure component to and/or from the communications device, the specification of the forwarding rule taking place under consideration of the security zone.

Abstract: A device and method for operating a communications network in a vehicle, or for operating an industrial communications network; a control entity for the communications network, in particular, a software-defined networking controller, determining a countermeasure after detection of an attack; an infrastructure component being configured as a function of the countermeasure, in particular, by setting at least one filtering, blocking or forwarding rule; and at least one data stream from or to at least one other infrastructure component being isolated by the infrastructure component, in a portion of the communications network; or at least one data stream to or from an end node being isolated by the infrastructure component, in a portion of the communications network.

Abstract: A method for operating a communications system, in particular a communications system based on software-defined networking, which has at least one network infrastructure component, in particular an SDN switch, and at least one communications device, the network infrastructure component being developed for forwarding data to and/or from the at least one communications device. The method includes the following steps: allocating the communications device to at least one security zone; specifying at least one forwarding rule for forwarding data by the network infrastructure component to and/or from the communications device, the specification of the forwarding rule taking place under consideration of the security zone.

Abstract: A device and method for operating a communications network in a vehicle, or for operating an industrial communications network; a control entity for the communications network, in particular, a software-defined networking controller, determining a countermeasure after detection of an attack; an infrastructure component being configured as a function of the countermeasure, in particular, by setting at least one filtering, blocking or forwarding rule; and at least one data stream from or to at least one other infrastructure component being isolated by the infrastructure component, in a portion of the communications network; or at least one data stream to or from an end node being isolated by the infrastructure component, in a portion of the communications network.

Abstract: A method for transmitting a message in a vehicle, in which the message is received according to a source protocol, a communication mechanism which is used by the message and corresponds to the source protocol is converted in such a way that the communication mechanism corresponds to a canonical protocol, the communication mechanism corresponding to the canonical protocol is converted in such a way that the communication mechanism corresponds to a predefined target protocol, and the message is transmitted according to the target protocol.

Abstract: A method, a device, and a computer program for operating a data processing system, including at least two nodes that are connectable via a data line for transmitting messages. A message includes an identifier for arbitrating messages to be transmitted, the identifier containing—information concerning a priority via which a processing sequence of messages ready for transmission is determined, and the identifier—containing information concerning a network node, via which a sender of the message is unambiguously determined, and—containing information concerning a service, via which a service is determined.

Abstract: A gateway, operable in a hierarchical heterogeneous network, includes at least two interfaces of which at least one is connectable to a lower network level, and the communication protocols in the network provide a message for offering a service and a message for searching for a service, receipt of a message coming in from a lower network level in the gateway at an interface for offering a service, and/or an item of information identifying the offered service, is noted in the interface receiving this message or in a management unit assigned thereto, and receipt of a message from a lower network level in the gateway at an interface for searching for a service and/or an item of information identifying the sought service is noted in the interface or management unit, and if the messages relate to the same service, a message for the service availability is sent via the interface.

Abstract: A method, a device, and a computer program for operating a data processing system, including at least two nodes that are connectable via a data line for transmitting messages. A message includes an identifier for arbitrating messages to be transmitted, the identifier containing—information concerning a priority via which a processing sequence of messages ready for transmission is determined, and the identifier—containing information concerning a network node, via which a sender of the message is unambiguously determined, and—containing information concerning a service, via which a service is determined.

Abstract: A gateway, operable in a hierarchical heterogeneous network, includes at least two interfaces of which at least one is connectable to a lower network level, and the communication protocols in the network provide a message for offering a service and a message for searching for a service, receipt of a message coming in from a lower network level in the gateway at an interface for offering a service, and/or an item of information identifying the offered service, is noted in the interface receiving this message or in a management unit assigned thereto, and receipt of a message from a lower network level in the gateway at an interface for searching for a service and/or an item of information identifying the sought service is noted in the interface or management unit, and if the messages relate to the same service, a message for the service availability is sent via the interface.

Abstract: A method for transmitting a message in a vehicle, in which the message is received according to a source protocol, a communication mechanism which is used by the message and corresponds to the source protocol is converted in such a way that the communication mechanism corresponds to a canonical protocol, the communication mechanism corresponding to the canonical protocol is converted in such a way that the communication mechanism corresponds to a predefined target protocol, and the message is transmitted according to the target protocol.