8 results about "Unidirectional network" patented technology

A virtual gateway for transmission of packets from a service provider virtual network to a service consumer virtual network of a user is established at a cloud computing environment. A limited-access endpoint is created in the service consumer virtual network, with security settings provided by the user which enable transmission of packets from a service implemented at the service provider virtual network to resources within the service consumer virtual network. A packet directed to a resource in the service consumer virtual network is received at the gateway from the service. If the security settings permit delivery of packets via the endpoint to the resource, the packet is transmitted to the resource.

The invention provides an intelligent fault diagnosis method and device for a rail transit point switch, and relates to the technical field of urban rail transit, and the method comprises the steps: collecting a three-phase working current signal and a power signal of the point switch in a standard action period, and sequentially carrying out the abnormality repair and frequency domain enhancement, so as to obtain a time-frequency fusion feature matrix; inputting the time-frequency fusion feature matrix into a target convolutional neural network to obtain a local-global association feature map; sending the local-global correlation feature map into a target one-way LSTM network according to time steps, capturing a long time sequence dependency relationship, and outputting time sequence coding features; and mapping the time sequence coding features into fault type probability distribution through a full connection layer and a Softmax classifier, and taking the maximum probability category as a final fault diagnosis result. Through a unique time-frequency domain feature fusion technology, multi-dimensional feature extraction of the operation state of the switch machine is realized, and the fault detection efficiency of the rail transit switch machine is remarkably improved.

The application provides a one-way data transmission method and system and an external network client. The one-way data transmission method comprises the following steps: for the data exchange requirement of a one-way isolated network environment, the external network client can write generated request event data into a local data stack, the internal network server can acquire and process the request event data that cannot be transmitted back to the internal network environment based on the stack technology, execute corresponding events, and feed back event response results of the executed events to the external network client, so as to form a message closed loop processing flow in the one-way isolated network environment. In the environment in which the external network and the internal network can only communicate in one way, the external network client can notify the internal network server of data like normal communication, information leakage is avoided, security risks are reduced, and complex deployment and additional maintenance are not required.

The application discloses a cluster management method and device in a unidirectional network environment and a medium, and aims to solve the problem that it is difficult to manage hundreds or thousands of servers corresponding to nodes in the existing unidirectional network environment. The method comprises the following steps: through a data node, it is listened whether a to-be-executed script is written in a to-be-executed container of a management node, and based on the writing listening, a to-be-executed container in the management node is triggered to be accessed to obtain the to-be-executed script; a legality verification request of whether the to-be-executed script is an authorized script is initiated to the management node, and a verification result of the management node responding to the legality verification request is received; in the case that the verification result is that the legality verification of the to-be-executed script is passed, the to-be-executed script is executed through the data node, and corresponding execution information is obtained; the execution information corresponding to the to-be-executed script is returned to the management node, and the execution information of the to-be-executed script in the cluster management system is counted through the management node, so that the cluster management in the unidirectional network environment is realized.

This invention discloses a trusted data synchronization method for SIS systems in heterogeneous isolated network environments, comprising the following steps: A) System initialization and heartbeat cycle setting; the trusted management center and trusted agent pre-agree on a fixed heartbeat cycle T as the basic time unit for global data synchronization; B) Trusted agent side: heartbeat data packet generation and trusted data reporting; at the beginning of each heartbeat cycle, the trusted agent collects various trusted data that need to be sent to the trusted management center in the current cycle and generates a "heartbeat data packet"; C) Trusted management center side: monitoring data and responding with ACK. This invention solves the compatibility problem between bidirectional networks and strict unidirectional networks through a unified communication paradigm of "agent proactive reporting + management end single-byte ACK". This method can work normally in both traditional bidirectional networks and unidirectional networks isolated by network gateways, achieving seamless compatibility of the communication model and shielding the differences in the underlying network.

The application provides an AI linkage anti-network-squatter method for routers, gateways and cameras in the technical field of Internet of Things security, which comprises the following steps: S1, collecting multi-dimensional features of devices requesting to access or having accessed the network; S2, inputting the multi-dimensional features into an AI recognition model to obtain a device type recognition result; S3, executing a hierarchical network permission control strategy corresponding to the device type according to the device type recognition result; S4, when the device is a visitor device, sending an authorization request to a user terminal; receiving an authorization feedback and configuring corresponding temporary network permissions for the visitor device according to the authorization feedback; and S5, when the device is a malicious network-squatter device, executing a network access blocking operation, adding the corresponding multi-dimensional features to a blacklist and issuing a linkage protection instruction to at least one camera in the network. The application has the advantage of greatly improving the in-depth recognition, active disposal and data protection capabilities for malicious devices having accessed the network.

The invention discloses a data verification method, system and device and a storage medium, and belongs to the technical field of Internet of Things data security, and the method comprises the steps: generating a verification task identifier based on transmission task information; serializing the verification task identifier to obtain a binary file; transmitting the binary file to a receiving terminal unidirectionally, and feeding back a verification result from the Netty channel after the receiving terminal verifies the data integrity; obtaining a comparison result of the autonomous comparison prediction result and the integrity verification result from the Internet of Things acquisition terminal; if so, the verification is passed, and if not, the verification is not passed. In the application, through a binary stream conversion file mode and a Netty channel mechanism, a sending end can perform autonomous verification without accessing data of a receiving end, and the limitation that end-to-end integrity verification depends on bidirectional feedback is broken through. And the data volume is compressed in a Protobuf serialization manner, so that the calculation overhead is reduced, and the verification efficiency when the data integrity is verified in a one-way network environment is improved.

The invention relates to a method for receiving and playing back audio and / or audiovisual content in a receiver device capable of receiving a determined audio and / or audiovisual stream from a unidirectional network or a bidirectional network. A determined stream broadcast on a network is first received and the content transmitted through said stream is played back in the receiver device. A first event external to the receiver device is detected. Said first event triggers an interruption of the ongoing playback of said content and records the time of said interruption. A second external event is then detected. The second external event triggers a step for determining the availability of the non-played part of the interrupted content and displaying to the user a menu for him to resume playing back this non-played part. The introduction of a command will then trigger the retrieval of the non-played part of said content and the playback of the retrieved content part. The solution thus enables the retrieval of a content broadcast on a radio stream; the playback of said content has been interrupted and the user is prompted to resume the playback later.