网络监听技术研究

当今,计算机网络与通信技术被广泛应用于生活工作的方方面面。因特网的成功把网络带入家家户户。Sniffer对于网络信息安全具有特殊的意义,该文讨论了网络监听技术的原理,结构,分析了网络监听的环境,并讲解了几种监听工具。     

基于广域网的分布式远程监测Sniffer系统

防止非法监听和对监听者进行有效干扰是安全网关的重要环节，该文首先分析了局域网中Sniffer监听原理的实现方法，检测和干扰Sniffer的方法，然后列出远程（跨越局域网）监测Sniffer的方法，并评述这些方法的优缺点。最后提出了利用通用通信平台，结合远程控制和本地检测Sniffer的原理和方法，实现了针对广域网环境的准确定位、及时干扰的Sniffer监测系统。     

网络监听的原理与防范

该文主要讲述了网卡的工作原理和Sniffer工作过程基本步骤,交换机的工作原理和网络监听的检测、网络监听的防范措施,对于网络管理员,就要想方设法地追踪和监测网络安全情况,必须加强对网络监听技术的研究和发展,更好保障计算机网络安全。     

基于Windows的网络监听技术在局域网中的实现

讨论了在Windows操作系统环境下网络监听技术的原理，给出了依据包过滤技术实现网络监听的基本步骤与方法．利用WinPcap开发包，实现了对网络底层数据包的捕获。     

基于WinPcap网络监听系统的实现

分析了WinPcap的体系结构并以WinPcap函数库作为开发平台,针对网络管理中的实际需求,分析了网络监听系统的基本工作原理与工作流程,描述了使用WinPcap函数捕获网络数据包的程序流程,最后给出具体实现的关键函数。     

局域网监听行为检测技术研究与实现

本文首先给出了网络监听的定义,介绍了不同介质下网络监听的一般原理和方法,在比较了多种监听检测技术各自的优缺点后,提出并设计完成了用于局域网内检测Sniffer的网络监听行为检测系统,它采用了基于TCP/IP协议的系统协议栈反射发包探测技术,解决了局域网内非法监听的网络安全问题。     

Windows 2000下网络监控平台软件的设计及实现

本文主要介绍了用VC＋＋6．0开发Windows2000下网络监控平台软件的原理、思路及方法，重点是IP包的监听。     

Sniffer技术和网络管理

分析了Sniffer技术的工作原理,探讨其在网络管理中的应用,根据实际工作经验总结了利用Sniffer技术进行网络安全和网络管理的基本方法。     

Windows下网页信息实时监听程序的设计与实现

本文介绍了监听网页信息的程序设计方法和实现原理。利用WinPcap函数库捕获数据链路层的数据帧，由网络协议确定包含HTTP消息的TCP数据，最后根据HTTP报文格式和TCP连接原理截获网页信息。     

基于WinPcap的测试软件设计

介绍WinPcap的功能、软件体系结构和工作原理,结合作者基于WinPcap进行数据产品测试软件设计开发的经验,对基于WinPcap的测试软件设计方法、过程作了分析和研究     

基于Internet的工业以太网远程监控系统设计

提出了一种基于Internet的工业以太网远程监控系统的体系结构,并且应用面向对象的设计方法和基于统一建模语言(UML)的建模工具RationalRose建立了系统模型。所设计的工业以太网远程监控系统为用户提供了远程动态监测现场数据,历史数据查询、下载和打印以及系统设置等功能,使用户能及时了解现场信息,快速进行决策。     

基于RSView32的自动立体仓库监控系统设计

为了便于操作人员掌握自动立体仓库的全部运行信息,设计并实现了远程监控系统。以RSView32组态软件为主要支撑平台,使用其强大的绘图工具和丰富的图形图库以及先进的OPC、ODBC接口技术,设计完成了自动立体仓库监控系统的安全登录、运行主界面、实时趋势图、报警提示以及数据记录等功能。该系统操作简单、性能可靠,具有良好的人机交互性,操作人员只需通过人机界面即可监控到立体仓库的全部过程和运行状态。     

实时网络安全监控系统的设计和实现

提出了一种实时网络安全监控系统(Real-time Network Security Monitoring System，RNSMS)，讨论了RNSMS的工作模式、实现功能、关键技术等问题。RNSMS能实时地对网络活动进行监控，对常见网络数据包(HTTP，FTP，Tclnet，POP，SMTP，SSL，UDP)内容进行实时分析还原，并加入OPSEC接口，加强与其他网络安全工具的协作互动。应用表明RNSMS是一种有效的网络安全工具。     

基于VB程序的ActiveX控件在Authorware中的应用

Authorware是较为常用的多媒体课件制作软件之一,它的开发工具直观、简单、易用,具有强大的交互功能、方便的向导功能、完美支持多种媒体、强大的变量、函数和ActiveX功能。同时它也有其本身的局限性,无法完成复杂的结构与属性设置以及复杂的交互操作等。通过实例阐述如何借助VB编程工具来创建ActiveX控件,更好地扩展Authorware的功能。     

Experimenting with quantitative evaluation tools for monitoringoperational security

This paper presents the results of an experiment in security evaluation. The system is modeled as a privilege graph that exhibits its security vulnerabilities. Quantitative measures that estimate the effort an attacker might expend to exploit these vulnerabilities to defeat the system security objectives are proposed. A set of tools has been developed to compute such measures and has been used in an experiment to monitor a large real system for nearly two years. The experimental results are presented and the validity of the measures is discussed. Finally, the practical usefulness of such tools for operational security monitoring is shown and a comparison with other existing approaches is given     

网络设备监管系统的设计与实现

网络设备监管是指对IP网络中的关键设备进行实时监控和管理,使网络管理员对网络设备的使用情况有更为深入的了解。在研究分析网络管理协议的基础上论述了基于RMON的网络设备监管系统组成结构和实现原理,同时详细介绍了该系统各主要功能模块的设计与实现。     

Application of smart audio based on mixed reality technology in media fusion

A company of gadgets is the leading representative of complex reality technology. Do have differences in technical design and application of measurement and comparison of technology. For each technical specification and representation, and support the software functions to compare and consider. Smart Audio is based on the complex reality in the complicated fact of media convergence first worker. Because he worked for as long as he is in this Computer, the most widely used operating system on media convergence is worn on the head. It supports a full range of programs that run on this platform. It works equipment is necessary, as long as the device itself is used as a monitor, only the complex reality, and has a strong enough PC. It is very similar and does not require media integration, attached to a Personal Computer (PC) connected to a separate device. Van is very similar. It does not require the media's integration, an additional stand-alone device connected to the PC. Currently, it uses its operating system, which limits its range of small software. Virtual reality technology, complex reality, should be noted and allows to add digital content with the real world without losing visual contact with others. As a result, technology in education, where the application is called Fusion Applications media. Fusion Media will support through video link and SMS data analysis tools to encourage communication and reflective learning.     

Optimizing Management Functions in Distributed Systems

With the increased availability and complexity of distributed systems comes a greater need for solutions to assist in the management of distributed systems. Despite the significant contributions made towards the development of management tools that monitor and control distributed systems, little has been done to address issues such as optimizing the execution of management functions with respect to system and management requirements. This paper presents a management optimization model in which management agents and managed objects are efficiently configured on the basis of a set of system and management requirements. We illustrate our model and describe its implementation through a Branch- and Bound-based algorithm and a web-based interface. The latter enables users to specify the requirements used by the optimization algorithm to determine efficient management configurations. It also includes an XML-based interface through which management agents can be started independent of the underlying platforms. Performance characteristics of the proposed algorithm as well as experimental results to illustrate the validity of the model are also described.     

GPS车辆监控系统在企业物流的应用

车辆监控技术是方便、快速正确引导、监控汽车抵达指定目的地的一种技术,它在提高汽车运行效率、节约能源方面以及物流业应用具有重要意义.以粤钢松山物流公司(GPS车辆监控管理系统)为例,介绍GPS监控系统的原理、结构及功能.     

基于GSM网络分布式无线通信系统

结合滑坡监测系统,重点论述了一种基于GSM网络远程无线数据通信的实现。无线远程数据采集和监控与传统有线方式相比具有不受地理环境、气候等因素限制,具有运行成本低、系统可靠、通信范围广以及更广泛的适应性等优势,它为远程监控、远程数据采集提供了一种可行的技术手段。本文利用GSM网络短消息和拨号数据通信两大功能,实现了对滑坡体的实时监测。该无线数据通信系统可以应用于其它远程监控等中小流量数据通信系统中。