排序方式: 共有221条查询结果,搜索用时 15 毫秒
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Linux是一种逐步趋于成熟的网络操作系统,有别于通常的光驱安装,本文给出了一种自动化网络安装的方案,并对这种方案的相关协议原理和技术进行剖析,包括Wake on LAN,NFS,TFTP,DHCP,PXE及Kickstart技术,并结合这些技术进行了实践应用. 相似文献
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通过PPPoE与DHCP技术对比,突出DHCP 在运营业务支撑能力上的技术优势,并针对DHCP 应用的网络安全问题进行讨论。 相似文献
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Linux系统下DHCP客户端的实现 总被引:1,自引:0,他引:1
胡嗣钦 《电脑编程技巧与维护》2012,(16):38-40
DHCP协议是基于UDP协议的应用层协议,用来简化客户机的IP地址的分配和管理,该协议采用服务器/客户端的方式。介绍了DHCP的工作流程和报文格式以及在Linux系统下DHCP客户端的实现过程。 相似文献
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Discrete Event System Framework for Fault Diagnosis with Measurement Inconsistency: Case Study of Rogue DHCP Attack 下载免费PDF全文
Mayank Agarwal Santosh Biswas Sukumar Nandi 《IEEE/CAA Journal of Automatica Sinica》2019,6(3):789-806
Fault detection and diagnosis (FDD) facilitates reliable operation of systems. Various approaches have been proposed for FDD like Analytical redundancy (AR), Principal component analysis (PCA), Discrete event system (DES) model etc., in the literature. Performance of FDD schemes greatly depends on accuracy of the sensors which measure the system parameters. Due to various reasons like faults, communication errors etc., sensors may occasionally miss or report erroneous values of some system parameters to FDD engine, resulting in measurement inconsistency of these parameters. Schemes like AR, PCA etc., have mechanisms to handle measurement inconsistency, however, they are computationally heavy. DES based FDD techniques are widely used because of computational simplicity, but they cannot handle measurement inconsistency efficiently. Existing DES based schemes do not use Measurement inconsistent (MI) parameters for FDD. These parameters are not permanently unmeasurable or erroneous, so ignoring them may lead to weak diagnosis. To address this issue, we propose a Measurement inconsistent discrete event system (MIDES) framework, which uses MI parameters for FDD at the instances they are measured by the sensors. Otherwise, when they are unmeasurable or erroneously reported, the MIDES invokes an estimator diagnoser that predicts the state(s) the system is expected to be in, using the subsequent parameters measured by the other sensors. The efficacy of the proposed method is illustrated using a pumpvalve system. In addition, an MIDES based intrusion detection system has been developed for detection of rogue dynamic host configuration protocol (DHCP) server attack by mapping the attack to a fault in the DES framework. 相似文献
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刘元君 《数字社区&智能家居》2006,(14)
Linux环境下引进DDNS解决方案,可解决手工修改DNS的工作。在Linux下通过DHCP的动态性实现安全、动态的DNS。实现安全DDNS的主要步骤有创建密钥、修改DNS的主配置文件、修改DHCP的配置文件和测试过程。最终通过用LinuxDHCP客户端测试和用Windows2003作为DHCP客户端测试,检测DDNS的实现过程。 相似文献
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徐坚 《数字社区&智能家居》2011,(9)
在使用DHCP服务的网络中,非法DHCP服务器的存在将干扰合法DHCP服务器的正常工作,从而影响网络的正常运行。该文给出了DHCP服务的工作过程,分析了非法DHCP服务器可能带来的危害,并提出了一些如何防范非法DHCP服务器的措施。 相似文献
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以嵌入式设备ARM Cortex M3/M4为基础,研究在无操作系统实现DHCP客户端的方法,对运输层UDP校验方案进行优化;采用内存静态分配优化DHCP运行效率和系统稳定性;提出抵御DHCP过程中ARP欺骗的优化算法;给出DHCP过程中根据DHCP ACK进行局域网内ARP缓存更新的方法,以提高DHCP客户端网络安全性和服务性能. 相似文献
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