通过对虚拟化技术和协议分析器的原理阐述,提出一个虚拟化技术和协议分析器构架计算机网络验证实验教学平台的方案,给出了利用虚拟机和协议分析器完成计算机网络协议分析验证实验的教学方法.

Based on the exposition of the principle of virtual technology and protocol analyzer ,putting forward a virtu-alization technology and validation protocol analyzer construction of computer network experiment teaching platform ,then coming up with the computer network protocol analytic ,verifiable and experimental teaching methods by using the virtual machine and protocol analyzer .

文章针对传统网络协议挖掘的缺陷,着重分析了传统网络协议的分析手段、漏洞类型、产生原因和挖掘方法。文章针对传统网络协议挖掘中协议的分析过程不能自动化、构造Fuzz的数据不符合网络协议格式规范和交互的流程导致无法深入快速地进行漏洞挖掘的缺点,提出了一种基于自动化协议分析算法、流量聚类分类算法、深度数据包检测技术、Fuzz技术相互整合的自动化协议分析漏洞挖掘工具设计方案。文章设计了一套自动化协议分析的漏洞挖掘系统,给出了系统的工作流程和组织结构,以及各个模块的功能和相互之间的关系,实现了一个自动化协议分析漏洞挖掘系统的原型。文章的最大创新是通过自动化协议分析、流量聚类分类算法和DPI技术的有机结合,实现了自动化协议分析、自动形成测试路径的网络协议漏洞挖掘技术。

Due to defects of traditional discovery in networking protocol, this paper analyzes methods of traditional network protocol analysis, vulnerability types, causes and discovery approaches, and disadvantages of traditional network protocol discovery. Thus, this paper proposes a design plan of automatic analysis and discovery tool based on integration of automatic protocol analysis technology, trafifc clustering sorting algorithm, deep packet inspection technique and Fuzz. This paper designs a set of vulnerability discovery system for automatic protocol, which provides systematic working procedure and structure, and function of each module and their interrelations;and finally gives a system model realization, based on which vulnerability discovery is conducted to the FTP server software to verify validity and efifciency of the system design plan. The major innovation of this paper is the integration of automatic protocol analysis technology, trafifc clustering sorting algorithm and DPI te

本文介绍了PROFIBUS DP/PA技术及其网络协议转换原理，并提出了基于通用型器件实现PROFIBUS DP/PA网络协议转换的技术方案，研究并开发了PROFIBUS DP/PA网关，为进一步研究PROFIBUS DP/PA网络的协议转换设备提供参考。

PROFIBUS DP/PA transmission technology and translation mechanism are addressed in the paper, and how to design a typical PROFIBUS DP/PA coupler based on general devices by SAIC is discussed too. The success experience can accelerate the implementation of other PROFIBUS DP/PA network devices in the industry.

安全问题成为制约电子商务发展的关键因素，而安全协议是目前电子商务支付系统的热点问题，SSL协议和SET协议又是电子商务主要的安全协议。在分析电子商务安全机制和PKI技术的基础上，对两种主要协议的安全性进行分析比较，以期对电子商务信息传递的安全问题提供有益的借鉴。

The security problems have become the key factor of restricting the development of electronic commerce, security protocol is the current hot issue of e-commerce payment system, SSL proto-col and SET protocol are security protocol of electronic commerce major. Based on the analysis of electronic commerce security mechanism and PKI technology, the two main types of protocol, provides the beneficial reference security for the information security of electronic commerce.

战争形式的转变推动了数据链组网技术的转变,最新一代的数据链开始采用自组网技术,这也代表了数据链未来的发展方向。MAC协议是数据链自组网的关键技术之一,数据链自组网的MAC协议急需提高抗干扰能力和安全性,增强对突发业务的支持,据此,提出了HPRMA协议。在此对协议的跳频处理增益和抗转发式干扰的效能进行了分析,论证了协议的高抗干扰能力和可实现性。通过仿真,验证了该协议对突发业务的支持。

The evolvement of the war form promotes the evolvement of TADIL’s networking techniques,so the up to date TADIL has adopted Ad Hoc techniques,which indicates the future trend of TADIL. MAC protocol is one of the key techniques of TADIL’s networking with ad hoc techniques,and needs to improve security and antijamming capability of MAC protocol ur-gently. Hereby,HPRMA protocol is put forward in this paper. The frequency hopping processing gain and effectiveness in allu-sion to forwarding interference are analyzed. The high antijamming capability and realizability of the protocol was demonstrated. The simulation results validate that this protocol can provide quick access for emergency business.