Huawei Technologies Co., Limited

China National Offshore Oil Corporation

China National Offshore Oil Corporation Research Institute

Huawei Digital Technologies (cheng Du) Co., Ltd.

Wenhui Xie

Wei Zhang

Bin Xie

Zhe Jiang

Zhiqiang Zhu

Guibin Hou

Rihua Zhang

Junrong Wang

Guolu Gao

Jun Feng Liu

Yong Xu

Rong He

Bo Ma

Yuzhu Chen

Hengyi Zeng

Xiaoping Lu

Cuihua Fu

Xiangdong Meng

Shifeng Mao

Ran Su

Zhijun Cheng

Ruirui Liu

Zhang Rihua

A threat detection method includes: obtaining packets in a Transmission Control Protocol (TCP) session between a first device and a second device; obtaining a first data flow transmitted from the first device and a second data flow transmitted from the second device in the TCP session; obtaining time information of each of a plurality of first packets in the first data flow and time information of each of a plurality of second packets in the second data flow; calculating an activation rate, a response rate, and a quantity of interactions based on the time information; and if the activation rate is greater than or equal to a first threshold, the response rate is greater than or equal to a second threshold, and the quantity of interactions is greater than or equal to a third threshold, determining that the first device is threatened.

Threat detection method and apparatus

The present invention provides a method and a system for negotiation based on IKE messages. A standby device updates a value of a stored third identity according to an update notification of an active device. The update notification of the active device is sent by the active device after updating a value of a stored second identity. When the standby device switches to a new active device, the new active device sends a second message for negotiating IPSec information to a peer device according to the updated third identity. The third identity is an identity that is stored in the standby device and used to acquire state information of the active device.

Method and system for negotiation based on IKE messages

A method, a device, and a system for backup are disclosed. The method includes: receiving a backup packet; analyzing the backup packet to obtain a serial number of an active data packet, where the serial number is carried in the backup packet; calculating a sum of the serial number of the active data packet and a specific increment value to obtain a serial number of a standby data packet; and backing up the serial number of the standby data packet. Therefore, after the service is switched over from the active device to the standby device, the active device still regards the data packet sent by the former standby device as a new data packet and receives the data packet, which prevents service interruption caused by the switchover and improves continuity of service processing in the process of two-node cluster hot backup.

Method, device and system for backup

The present disclosure relates to a grouting and welding combined connection joint and an offshore installation method thereof, characterized in that: it comprises a set of grouting systems disposed inside of the annular space formed by an inner shell of the central pore canal of a column with large cross section and an outer wall of a column with small cross section, as well as a group of brackets welded on a top deck of a column with small cross section and an inner shell of the central pore canal of the column with large cross section. The grouting and welding combined connection joint provided by the present disclosure has advantages of being able to adapt to the connection of different dimensions of columns, and having simple offshore installation, highly reliable structural safety and low cost.

Grouting and welding combined connection joint applied to a deepwater floating type platform and an offshore installation method thereof

An integrative deep draft floating production platform with unconditional stability and an offshore installation method thereof are disclosed. The platform comprises an ring ballast tank at the bottom, some columns with small cross sections, an ring buoyancy tank at the middle part, some columns with large cross sections, and an upper drilling equipment and oil gas processing module. The ballast tank adopts a permanently fixed ballast, and the tank is internally filled with weights to ensure that the center of buoyancy of the platform is higher than the center of gravity. The drilling equipment and oil gas processing module is installed in the construction site, and the platform is transported to the installation site by a dry tow or wet tow as a whole and then is installed. The platform can be applied to deepwater oil and gas exploitation under harsh marine environment.

Integrative deep draft floating production platform with unconditional stability and offshore installation method thereof

A system for processing packets in a distributed architecture system includes a main control board, at least one service board, and at least one interface board. The system determines a specified CPU corresponding to a received packet; and, by the service board corresponding to the CPU, processes the received packet. The received packets are processed in the service board corresponding to the specified CPU. Therefore, the packets are evenly distributed to all service boards for being processed, the workload of the main control board is relieved, the service throughput is increased significantly, and the packet processing efficiency of the whole architecture is improved.

Method, apparatus and system for processing packets

A method, a system, and a processor for processing a network address translation (NAT) service are provided. The method includes: performing NAT service identification of a received message, and selecting a corresponding NAT service processor for processing a NAT service of a message that needs a NAT service processing from at least two NAT service processors. Through embodiments of the disclosure, a demand for the system to process a lot of NAT services within a short time is fulfilled, so as to increase the capacity of processing NAT services of the system.

Method, system and processor for processing network address translation service

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Beijing, China

Wenhui Xie