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检索条件"主题词=Linux Operating System"

共 68 条记录，以下是41-50 订阅

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Mastering linux Security and Hardening: Secure your linux server and protect it from intruders, malware attacks, and other external threats 2nd edition

引用

2018年

作者： Donald A. Tevault

ISBN: (数字)9781788625067

ISBN: (纸本)9781788620307

A comprehensive guide to mastering the art of preventing your linux system from getting compromised. About This Book • Leverage this guide to confidently deliver a system that reduces the risk of being hacked • Perform a number of advanced linux security techniques such as network service detection, user authentication, controlling special permissions, encrypting file systems, and much more • Master the art of securing a linux environment with this end-to-end practical guide Who This Book Is For If you are a systems administrator or a network engineer interested in making your linux environment more secure, then this book is for you. Security consultants wanting to enhance their linux security skills will also benefit from this book. Prior knowledge of linux is mandatory. What You Will Learn • Use various techniques to prevent intruders from accessing sensitive data • Prevent intruders from planting malware, and detect whether malware has been planted • Prevent insiders from accessing data that they aren’t authorized to access • Do quick checks to see whether a computer is running network services that it doesn’t need to run • Learn security techniques that are common to all linux distros, and some that are distro-specific In Detail This book has extensive coverage of techniques that will help prevent attackers from breaching your system, by building a much more secure linux environment. You will learn various security techniques such as SSH hardening, network service detection, setting up firewalls, encrypting file systems, protecting user accounts, authentication processes, and so on. Moving forward, you will also develop hands-on skills with advanced linux permissions, access control, special modes, and more. Lastly, this book will also cover best practices and troubleshooting techniques to get your work done efficiently. By the end of this book, you will be confident in delivering a system that will be much harder to compromise. Style and approach An

关键词： linux linux Security Vulnerabilities Attackers Hackers linux Servers linux Administration linux operating system linux Security and Hardening SSH Network Security File system Security Encryption Firewalls

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Design of Five-axis CNC Based on linux

Design of Five-axis CNC Based on Linux

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International Conference on Computer Science and Network Technology (ICCSNT)

作者： Wang Changlei Cao Shukun Zhang Qianqian Sui Zhiming Yang Shangwei Univ Jinan Sch Mech Engn Jinan Shandong Peoples R China Univ Jinan Sch Informat Sci & Engn Jinan Shandong Peoples R China

ISBN: (纸本)9781457715846

For complex parts of high speed, high precision machining demands, five -axis CNC system is studied, on the analysis of application of the embedded technology in CNC system, put forward a kind of new type of five-axis CNC system. The design utilizes an embedded multi-processor ideology to be S3C2410 processor as hardware core and motion control chips MCX314 as Secondary processor, the consistency problem of multi-processor communication is solved by a combination of bus and interrupt mechanism. Focus on the implementation of MCX314 driver and complete design of MCX314 driver in the linux system. The address of two MCX314 motion control cards is completed by minor device number. Its practice indicated the method is correct and feasible, the program is stable and reliable.

关键词： Five-axis CNC linux operating system MCX314 motion control chips Device Drivers

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Design and Realization of Digital Image Encryption and Decryption Based on Multi-Wing Butterfly Chaotic Attractors

Design and Realization of Digital Image Encryption and Decry...

引用

5th International Congress on Image and Signal Processing (CISP)

作者： Tang, Zilong Yu, Simin Guangdong Univ Technol Coll Automat Guangzhou Guangdong Peoples R China

ISBN: (纸本)9781467309646;9781467309653

In this paper, a novel approach for digital image encryption and decryption via embedded FPGA Ethernet transmission is proposed. Taking multi-wing butterfly chaotic attractor as an example, based on Euler algorithm and variable ratio expansion transformation, by programming C language under the linux operating system, the continuous time chaotic system is converted to the discrete chaotic system and the digital chaotic sequence is generated as image encryption and decryption on the embedded FPGA-based platform. According to the principle of driving-response synchronization, a scheme for chaotic secure communication of a 512x512BMP static color image is implemented via Ethernet transmission on the embedded FPGA platform with XUP Virtex-II Pro chip. Moreover, the system design, software simulation and hardware implementation results are also given.

关键词： Embedded FPGA Ethernet transmission linux operating system multi-wing butterfly chaotic attractor digital image encryption and decryption

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Security Analysis and Configuration of SSL Protocol

Security Analysis and Configuration of SSL Protocol

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2nd International Conference on Anti-Counterfeiting, Security and Indentification

作者： Liu Niansheng Yang Guohao Wang Yu Guo Donghui Jimei Univ Sch Comp Engn Xiamen 361021 Fujian Peoples R China Xiamen Univ Sch Informat Sci & Technol Xiamen 361005 Peoples R China

ISBN: (纸本)9781424425846

SSL (Secure Sockets Layer) protocol is one of key technologies to keep user's data in secure transmission via Internet. This paper is present to analyze the security of SSL protocol and propose a new scheme of SSL protocol configured in the linux operating system (OS). The experimental results show that the proposed scheme is feasible and practical as a secure solution for web-based communication, and the SSL protocol is compatible to the other protocol in application layer via proper configuration.

关键词： SSL protocol data security web communication linux operating system

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Performance Impact Correlation of Message Size vs. Concurrent Users Implementing Web Service Security on linux Platform

Performance Impact Correlation of Message Size vs. Concurren...

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3rd International Conference on ICT Innovations

作者： Sasko Tentov, Aristotel Ss Cyril & Methodius Univ Fac Comp Sci & Engn Rugjer Boshkovik 16 Skopje 1000 Macedonia Ss Cyril & Methodius Univ Fac Elect Engn & Informat Technol Skopje 1000 Macedonia

ISBN: (纸本)9783642286636;9783642286643

The implementation of web service security standards provides end-to-end security attaching signature and encryption headers to SOAP messages, but it outcomes with message overhead, as well as requires complex cryptographic operations for each message or some parts of it. This leads to extra CPU time and memory for processing information related to WS-Security, as well as elapsed time for parsing the increased XML message. This paper describes a series of experiments focused on understanding the performance impact of different security-level mechanisms based on WS-Security. We create a baseline of performance data that can be used to explore if the parameter "message size" or "number of concurrent messages" impacts more to the server performance for different message types with or without different WS-security mechanisms implemented on web service hosted on web server on linux platform. Also, we analyze the correlation between these two parameters.

关键词： web service security performance response time throughput SOAP message size linux operating system

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A scalable distributed multimedia file system using network attached autonomous disks 8

A scalable distributed multimedia file system using network ...

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8th International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication systems

作者： Akinlar, C Mukherjee, S Univ Maryland Dept Comp Sci College Pk MD 20742 USA

ISBN: (纸本)076950728X

Repository for multimedia data differs from that of the traditional text-based data both in storage space and streaming bandwidth requirements. The file systems used in multimedia environment need to support large volumes and high bandwidth. In this paper, we propose a novel scalable distributed file system built using Autonomous Disks. Autonomous disks are attached directly to the network and are able to perform lightweight processing. We discuss different ways to realize autonomous disk, and describe a prototype implementation on linux platform using PC-based hardware. We present the design methodology and a prototype linux-based implementation of the distributed file system that supports them We detail experimental results on the performance of the proposed file system prototyped using autonomous disks. We show that the performance of the fire system scales linearly with the number of disks and the number of clients. The file system performs much superior to NFS running on the same hardware platform and ran deliver higher raw disk bandwidth to the applications. We also show that the file system can provide strict bandwidth guarantees for multimedia streams.

关键词： file system distributed file system network file system network attached storage devices linux operating system quality of service network and disk scheduling

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A SAT2IP CLIENT SOFTWARE THAT IS BASED ON RTSP PROTOCOL 22

A SAT2IP CLIENT SOFTWARE THAT IS BASED ON RTSP PROTOCOL

引用

22nd Telecommunications Forum Telfor (TELFOR)

作者： Markovic, Stanislav Acanski, Milan Bako, Miroslav Mudri, Sasa Univ Novom Sadu Fak Tehn Nauka Trg Dositeja Obradov 6 Novi Sad 21000 Serbia Istrazivacki Inst RT RK Novi Sad 21000 Serbia

ISBN: (纸本)9781479961917

The paper presents an implementation of client software for reception of television program from a SAT2IP server. The client software is written in C programming language, for linux operating system. RTSP protocol is used for command connection, and RTP-RTCP for transmission of media stream. Both unicast and multicast operation are supported. The client can be integrated in Set Top Box software stack, in order to support IP television.

关键词： C language IPTV linux media streaming transport protocols C programming language IP television linux operating system RTP-RTCP RTSP protocol SAT2IP client software SAT2IP server multicast operation television program unicast operation Digital video broadcasting IP networks Servers Software TV Unicast

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Communication Technology Research Based on EtherNet/IP

Communication Technology Research Based on EtherNet/IP

引用

International Conference on Information Science, Automation and Material system

作者： Chen, Zaiping Wei, Yi Jia, Chao Tianjin Univ Technol Tianjin Key Lab Control Theory & Applicat Complic Sch Elect Engn Tianjin Peoples R China

ISBN: (纸本)9783037850817

EtherNet/IP is a superior mainstream industrial EtherNet which defines an open industrial standard and combines traditional EtherNet with industrial protocol, according to these advantages EtherNet/IP has a good prospect for development. In this paper the structure of EtherNet/IP protocol is analyzed, and the mainly EtherNet/IP data communication mechanism is discussed. The development method of EtherNet/IP communication software under linux operating system is given. By using PCU - ETHIO board as experimental equipment, some experiments are carried out. The result of experiment has confirmed that, the research of EtherNet/IP data communication mechanism and the development scheme of EtherNet/IP communication implementation proposed in this paper are correct and effective.

关键词： Industrial Ethernet Ethernet/IP linux operating system

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A Study of Cloning in the linux SCSI Drivers

A Study of Cloning in the Linux SCSI Drivers

引用

11th IEEE International Working Conference on Source Code Analysis and Manipulation/IEEE International Conference on Software Maintenance/IEEE International Symposium on Web systems Evolution/VISSOFT/MESOCA

作者： Wang, Wei Godfrey, Michael W. Univ Waterloo David R Cheriton Sch Comp Sci Waterloo ON N2L 3G1 Canada

ISBN: (纸本)9780769543475

To date, most research on software code cloning has concentrated on detection and analysis techniques and their evaluation, and most empirical studies of cloning have investigated cloning within single system versions. In this paper, we present the results of a longitudinal study of cloning among the SCSI drivers for the linux operating system that spans 16 years of evolution. We have chosen the SCSI driver subsystem as a test subject as it is known that cloning has been embraced by these developers as a design practice: when a new SCSI card comes out that is similar to an old one, but different enough to warrant its own implementation, a new driver may be cloned from an existing one. We discuss the results of our qualitative and quantitative analyses, including how the layered architecture of the SCSI subsystem seems to have affected the use of cloning as a design tool, the likelihood of consistent and inconsistent change over time, and the predictive power of using cloning between two independent driver implementations to model the similarity between two target devices.

关键词： Cloning Computer architecture Detectors Hardware Kernel linux linux linux SCSI driver subsystem linux operating system analysis techniques clone evolution crosscutting concerns design tool detection techniques device drivers layered architecture quantitat

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Can Learning-Based Hybrid DVFS Technique Adapt to Different linux Embedded Platforms?

Can Learning-Based Hybrid DVFS Technique Adapt to Different ...

引用

IEEE SmartWorld, Ubiquitous Intelligence and Computing, Advanced and Trusted Computing, Scalable Computing and Communications, Internet of People, and Smart City Innovations (SmartWorld/ScalCom/UIC/ATC/IoP/SCI)

作者： Ramegowda, Deepak Lin, Man St Francis Xavier Univ Dept Comp Sci Antigonish NS Canada

ISBN: (纸本)9781665412360

With the increased use of embedded platforms powered by linux, battery life has become one of the central focuses in research and innovation. Towards this, dynamic voltage and frequency scaling (DVFS) has emerged as a powerful technique. However, reinforcement learning-based hybrid DVFS techniques for Mixed Task sets are hardly investigated, considering linux operating systems targeted on embedded platforms. This paper illustrates an experimental analysis of an energy reduction technique using hybrid learning-based DVFS methodology for Mixed Task sets on linux Embedded Platforms with ARM and Intel architectures. We analyze the hybrid DVFS approach using reinforcement learning to handle a Mixed Task set on linux platforms and evaluate the algorithms on various real-time devices. Results show that we can successfully apply the extended hybrid DVFS technique on real-time linux embedded platforms, i.e., Dell Laptop, Raspberry Pi, and Beagle Bone Platform, all focusing on energy saving. Over 3% energy savings can be achieved for a standard real-time scheduling mechanism without any penalty in application throughput. We believe that our implementation might potentially lead to a number of innovative applications that use Learning-based DVFS algorithms targeted on linux real embedded hardware.

关键词： DVFS Reinforcement Learning Energy-efficiency Mixed Taskset linux operating system

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