40results about How to "Avoid cyber storm" patented technology

The invention provides an industrial Ethernet in distributed control system, relating to the field of communication. The network comprises a plurality of nodes, and the nodes are subject to data packet transmission authority control by the token having data packet transmission authority. The system also realizes the functions of dual network redundancy, fast diagnosis and the like.

The invention provides a system and a method for detecting loopback. The system comprises a first switch and a second switch, wherein the first switch is connected with an optical line terminal, the second switch is connected with a terminal device, and the optical line terminal is used for generating a second-layer message for detecting a loopback phenomenon; the optical line terminal sends the second-layer message to the second switch through the first switch; the second switch broadcasts the second-layer message to the terminal device connected therewith; the optical line terminal judges that whether the returned second-layer message is received; and when the optical line terminal receives the returned second-layer message, the terminal device which returns the second-layer message is forbidden. According to the system and the method, loopback detection can be conducted on any type of terminal device without adding extra hardware.

The invention belongs to the technical field of quantum communication, and discloses a quantum wireless mesh network routing method and architecture based on entanglement exchange. The method comprises the following steps: taking a comprehensive weight value of node hops and round-trip time parameters in a wireless quantum mesh network as an overhead value of a route, enabling each node to be accessed to the network step by step by using a minimum spanning tree method, and constructing a classical channel in the network; then preparing and distributing entangled particles by a part of nodes inthe network, and performing quantum entanglement exchange and measurement by the other part of nodes to construct a quantum channel; and finally, carrying out quantum information transmission betweenthe source node and the destination node through a quantum stealth state transfer method. According to the method, the wireless quantum mesh network with a complex structure can be logically regardedas a tree-shaped ring-free network topology, so that the generation of network storms is avoided; a ''pairwise combination'' scheme is proposed to establish a quantum channel between a source node and a destination node.

The invention provides a PXE equipment positioning method and device, which are used for solving the problem of inaccurate rapid real-time positioning of the physical position of equipment with high mobility in a PXE network. The method comprises the following steps: acquiring an address resolution protocol ARP table and a forwarding table on an access switch through a network management protocolon a PXE server, and associating the ARP table and the forwarding table to obtain a corresponding relationship between an IP address and a port; and monitoring a dynamic host configuration protocol (DHCP) interaction message in a network to obtain a corresponding relation between an IP address and a port of equipment from the DHCP interaction message, and positioning the physical position of the equipment by associating a corresponding relation table of the IP address and the port obtained in the two modes. According to the invention, the rapid real-time positioning of the physical position ofthe equipment with high mobility in the PXE network can be realized, the position positioning covers the whole starting process of the equipment, the data flow in the PXE network can be minimized, and the formation of network storms is avoided.

The present invention discloses ADSL terminal automatically configuring PVC method. Said method includes 1, asymmetric digit user loop wire ADSL terminal adding parameter stored PVC parameter list to user PC transmitted message, then retransmitting said message to office terminal equipment to make PVC searching; 2, ADSL terminal receiving network side broadband access server responsive PVC parameter message, setting said PVC parameter as ADSL terminal PVC parameter. The present invention adopts variety strategy and message type to make automatically PVC configuring, raising reliability and flexibility.

The invention discloses a remote network control system based on a virtual local area network in the technical field of network engineering. The remote network control system comprises a host, an input end of the host is electrically connected with an output end of a local monitoring unit, the host is in two-way electric connection with a PCIE switch, a TCP/IP is in two-way electric connection with a central processor, the central processor is in two-way electric connection with a data transmission unit, the data transmission unit is in two-way electric connection with a remote control unit, data exchange and transmission are carried out by using the PCIE switch and the TCP/IP, data transmission is only allowed between hosts in the same virtual local area network, thereby ensuring the security of data transmission and avoiding network storm, the local control and monitoring of the host are realized by a local control unit, remote control of a host interface, as well as viewing of the host interface are realized by the remote control unit, and in addition, the security coefficient of the system is improved through a background maintenance module.

The present invention discloses the technical field of network communication, and discloses a computer network communication system. The system comprises a microprocessor, an access control module, anencryption module, a local control module and a communication module. The access control module, the encryption module, the local control module and the communication module are connected with the microprocessor, the access module comprises an identity authentication module, an authorization control module, an access control module and an authority management module. The computer network communication system integrates access management based on a host, network data encryption and local control to achieve omnibearing management and monitoring of a computer network, prevent the computer network from being attacked by various networks to the maximum extent, ensure data safety transmission, avoid network storm and improve the network safety and reliability, and is low in power consumption cost and good in timeliness.

The invention relates to a distributed network asset surveying and mapping method and device, computer equipment and a storage medium, and the method comprises the steps that a distributed network asset surveying and mapping node responds to the received network asset surveying and mapping request information, and obtains the current data transmission quantity of seed equipment corresponding to the surveying and mapping node in real time, whether the seed equipment is in an idle state or not is judged according to the data transmission quantity; when it is judged that the seed equipment is inthe idle state, a scanning instruction is sent to electronic equipment directly connected with the seed equipment so as to scan the electronic equipment to obtain a scanning result of the electronic equipment; and the distributed network asset surveying and mapping node compares the current scanning result of the electronic equipment with a previous scanning result, generates a local surveying andmapping result according to a comparison result, and sends the local surveying and mapping result to a network asset surveying and mapping server.

The embodiment of the invention provides a network loop monitoring method, system and device and a storage medium, a loop frame message is received and inserted at a CPU channel interface end, the loop frame message is broadcasted to a network from each signal sending port by using forwarding and broadcasting functions of a switching device, and when a loop occurs in the network, the loop frame message is sent to the switching device. And the loop frame messages are finally returned to the switching equipment serving as the sending equipment. Therefore, the message broadcasted in the network is received in real time at each signal receiving end of the switching equipment, meanwhile, the received message is detected, whether the message belongs to the message sent by the equipment or not is judged, and an alarm is given to the generated loop, so that the switching equipment can take some measures for blocking the occurrence of the loop. According to the embodiment of the invention, loop detection of multiple ports of the switch is realized, loop detection and positioning in a network can be quickly realized, and a network storm caused by a network loop is avoided.

The invention discloses a message forwarding method, device, network equipment and system. The message forwarding method comprises the following steps: acquiring message information of a target message to be forwarded and an incoming path of the target message; determining an outgoing path of the target message according to the message information; under the condition that the incoming path and the outgoing path are the same, re-determining the outgoing path of the target message; and forwarding the target message through the re-determined outgoing path.

The invention discloses a data communication management device with the video transmission function. The device comprises a data communication management device body and a data processing center in the data communication management device body. The data communication management device is characterized in that an information interface is arranged on the side of the data communication management device body, a firewall system and a storage are arranged in the data processing center, a data converter is arranged on one side of the storage, and a dust removal outlet is formed in the information interface. The data communication management device is simple in structure, equipment management of the operation and maintenance staff is simplified, a data collection method is optimized, the data forwarding mode is changed, the maintenance cost and energy consumption are reduced, and the data communication management device body can be applied to the fields of harbor docks, intelligent buildings, industrial enterprises, distribution network automation, intelligent power grids, charging piles, new energy resources, mobile substations and the like.

The invention discloses a distributed service security detection method, which is realized based on a distributed service system, the distributed service system comprises a central server, a plurality of service terminals, a proxy center corresponding to the central server and a plurality of proxy nodes corresponding to the service terminals, and an annular peer-to-peer network comprising the proxy nodes is constructed. Comparing the states of all the agent nodes in the ring peer-to-peer network to judge the real states of all the agent nodes, wherein the real states comprise a normal state, an abnormal state and an off state; for any agent node in the abnormal state in the annular peer-to-peer network, judging whether to trigger protection for the agent node in the abnormal state by calculating the proportion of the number of the nodes in the abnormal state in the agent nodes in the annular peer-to-peer network to the total number of the nodes; the method has the advantages that hostile attacks are effectively distinguished, and effective security detection and protection are carried out on the proxy node on the premise of reducing unnecessary node protection triggering.

The present invention discloses a method for integrated cabling of a medical image storage and transmission system and design of a network system. The method comprises a first step that an image device of an image storage and transmission system is connected, an image device of a medical digital imaging and communication standard is connected, and over five types of network cable are laid for the image device of the medical digital imaging and communication standard; a second step that an information network terminal point of the image storage and transmission system is designed, and a general switch device externally connected with other buildings uses a third or a fourth layer of switch to perform traffic control and load balance; and a third step that a network switch device of the image storage and transmission system is configured, and devices of the image building are connected with devices of an outpatient building, an ECT and a tumor department by using an optical fiber module of an Intel Express 480 switch. The method for integrated cabling of the medical image storage and transmission system and design of the network system meets high demands of large medical image storage and transmission systems at present.

The invention discloses an intelligent substation GOOSE network system based on EtherCAT. The system comprises an EtherCAT master station and EtherCAT slave stations, wherein the EtherCAT slave stations are all intelligent electronic equipment in the station, and comprise a combination unit, an intelligent terminal and a measuring and control device. The EtherCAT master station is special network communication equipment; each EtherCAT slave station is embedded with an ESC board card to simultaneously achieve network communication besides established functions of the intelligent electronic equipment. The network system provided by the invention has a reliable topological structure, each of the master and slave station equipments in the GOOSE network is generally provided with two Ethernet physical interfaces, the network adopts an annular topological structure which is higher in reliability than a start structure of the existing GOOSE network; the GOOSE network provided by the invention does not need a switch, is low in requirement on CPU performance, does not need a special physical layer port, and can save a lot of hardware resources in the network.

The embodiment of the invention provides a topology pruning method and device for a ring network and a virtual switch. The method is applied to a target virtual switch included in a ring network, the ring network is composed of a plurality of virtual machines and a plurality of virtual switches, the ports of the virtual machines and the virtual switches are connected in a set mode, the target virtual switch is any one of the virtual switches, and the target virtual switch comprises a first port. The method comprises the following steps: receiving a first BPDU message sent by a second port of a first virtual machine through a first port, wherein the first BPDU message comprises an MAC address of the second port; if the MAC address of the first port is empty, setting the MAC address of the first port as the MAC address of the second port; and based on the set MAC address of the first port, executing a spanning tree protocol to complete topology pruning of the ring network, thereby solving the network storm.