Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-11-29 Cooperative journals: 《计算机应用研究》
Abstract： A middlebox is a device that a network administrator manually sets behavior policies. The advent of Software-defined networks (SDN) has made it possible to diversify the possibilities of implementing a middlebox implementation strategy. In order to improve the security of the information service center, this paper proposes an SDN-based dynamic intermediate policy implementation architecture that can respond to network events without administrators' participation, and proposes an interface that can satisfy the communication between the controller and the intermediate box. An intermediate box prototype with a firewall and an intrusion prevention system (IPS) was implemented in the virtual machine to evaluate the policy execution system and verify the experimental results obtained by the prototype. The results show that the architecture can dynamically execute the middlebox policy without affecting network performance, so that the network application can run normally.
Subjects: Geosciences >> Space Physics submitted time 2017-03-10
Abstract：为了实现对不同频率超声波信号的高速采集，提出了一种基于可编程滤波器、USB2.0和C#的接收频率可调的超声波信号接收与采集系统设计方案，并完成了系统的软硬件设计。该系统的硬件部分主要用来数字量化模拟信号并将其上传至上位机，软件部分采用C语言和C#编程，以实现数据的正常采集与上传保存。实际应用表明，该系统具有操作简便、测试准确、使用灵活的特点，达到了设计要求。
Peer Review Status:
Awaiting Review
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