查询词典 network security

We begin with an introduction of the research background, the difference between traditional network management and security-oriented network management, and the contributions of this paper. Then we present the structure and the principles of the SIMP: we put forward to a functional and hierarch model based on JMX specification and Struts technology And a JMX-based network management model.

本文首先介绍了课题的背景、网络安全管理相对于网络管理的特点和本文的研究内容，针对传统网络管理的不足，提出了安全集中管理系统的总体结构、组成及工作原理：安全集中管理平台的体系结构采用JMX技术作为系统的集成总线，将各管理功能模块作为JMX管理构件，实现了系统的组件化、模块化的开发；层次结构采用了基于Struts的MVC架构模式，底层数据库采用了对象关系映射技术，提高了系统的可维护性和可扩展性。

The next generation optical network will be divided into multiple routing domains to improve the performance of routing and signaling, network reliability, scalability and security. It will be essential to define the border of network management and to adopt the technology of distributed management and hierarchical routing.

为了定义网络的管理边界、提高路由和信令的性能、提高网络的可靠性，可扩展性和安全性以及兼容不同系统间的技术差异，以ASON为代表的下一代光网络将被划分为多个路由域，采用分布式管理和分层的网络路由体系。

With nodes of the vast network , more and more sensitive information is being stored and manipulated online , the computer network is more vulnerable to miscellaneously malicious or unauthorized actions , network security is becoming increasingly important .

而在网络增长的同时，越来越多的敏感信息被在线存储和管理，使网络更加脆弱，更容易受到网络上各种恶意或非法用户的攻击，因此网络安全已变得越来越重要。

From the practical point of view,it notedly expounds the network topology design,network hierarchy,system design,IP planning,division of subnet VLAN,security design,equipment selection and cabling system as well as relative technologies,aimed at constructing a advanced and practical campus network.

从实用的角度重点论述了校园网的拓扑结构设计、网络层次结构、系统总体设计、IP规划、子网VLAN划分，安全设计、设备选型以及综合布线系统等相关技术，其目的是要建设一个先进、实用的校园网。

With the development of communication and network technology, more and more control systems are connecting with State Power Data network. Especially the power market is being put into operation, and more data are exchanged. The control system and data network face a big challenge about security, reliability and real time operation.

随着通信技术和网络技术的发展，接入电力调度数据网的控制系统越来越多，特别是电力市场的发展，数据交换非常频繁，这对电力控制系统和数据信息网络的安全性、可靠性和实时性提出了新的挑战。

Branch curriculum: c language, c++ programming, network security technology, computer network, homepage design, internet technology and application, software engineering, database application and technology and so on main practice: in 07 year summer schools the software engineering practice, has completed some tour information management system management system demand analysis and design documents 07 year summer ata (beijing entire america educational technique service limited company) really teaches, has completed the correlation network transport protocols compilation self-appraisal: has the strong team cooperation spirit and the organization coordinates ability, is glad accepts the challenge, is independent and self reliant, has the superior quality which certain innovation thought and bears hardships and stands hard work, has the good physical quality, the psychological quality; collective sense of honor; works practices good self-discipline, has the good occupational ethics and dares the responsible spirit.

主干课程： c语言，c++程序设计，网络安全技术，计算机网络，网页设计，internet技术与应用，软件工程，数据库应用与技术等主要实践： 07年暑期校内软件工程实习，完成了某旅游信息管理系统的需求分析和设计文档 07年暑期ata（北京全美教育技术服务有限公司）实训，完成了相关网络传输协议的编写自我评价：具有较强的团队合作精神和组织协调能力，乐于接受挑战，自立自强，具有一定的创新思维和吃苦耐劳的优秀品质，具有良好的身体素质，心理素质；集体荣誉感强；工作上严于律己，具有良好的职业道德和勇于负责的精神。

In order to improve the reliable transmission efficiency, Ahlswede et al. introduced the network coding theory. Network coding can not only increase network throughput, but also advance in data universalness, robustness, reliability and security.

为了实现更高的传输效率，Ahlswede等人提出采用网络编码的方法，不但可以提高网络吞吐量，而且在普适性、鲁棒性、可靠性和安全性等方面都具有优势。

Firstly, this paper puts forward an improved authentication and key distribution scheme for internet environment, in which we adhibit multilevel authentication center, encryption technology of DES, RSA and one-way function to actualize the safety of communication among the different user on network and reduces the workload of the authentication institution; at the same time, this scheme can also assure the security of network. Besides, it use the temporary symbol and the responds" sign of both-side correspondent to replace time stamp and applies them to internet communication to countercheck "rebroadcast attack and accordingly resolves the problem that it needs synchronization for network clock.

本文在首先提出一种改进的Internet网络环境下的认证及密钥分配方案，该方案考虑采用了多级认证中心，DES、RSA和单向函数加密机制，实现了网络上不同用户间的安全通信，降低了网上认证机构的工作量，同时也能够保证网络的安全性；并用通信双方的临时标志和响应者标识来代替时间戳应用于Internet通信中以防止&重播&攻击，从而解决了以往需要网络时钟同步这一难题。

Relevant knowledge: Our country is by public security mechanism censorial branch is in charge of safety of public information network blow network crime, defend the order on the net and network safety.

相关知识：我国是由公安机关公共信息网络安全监察部门负责打击网络犯罪、维护网上秩序和网络安全。

With the rapid development of Internet, the problem of network security becomes more and more important How to construct a secure network is an important subject The technologies of firewall, cryptography, identity authentication are indispensable but passive in defensing against network attacks.

随着Internet的迅速发展，特别是随着政府上网工程的启动，网络安全问题越来越受到重视。

Allow flunking out school in one week, deducting correlative charge from fee .

开学后一周内允许退学，扣除已上课程相关费用，开学一周后，不再办理退学。

Because he had the presence of mind, the children were saved.

由于他沉着冷静，孩子们得救了。