共查询到18条相似文献,搜索用时 78 毫秒
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指出了ATM网络存在的安全威胁,讨论了ATM网络的数据加密技术、完整性服务等ATM网络安全技术。在基于将ATM的安全层置于AAL层和ATM层之间的观点上,本论文设计了一个数字签名结构和密钥交换协议,该协议作为呼叫建立过程的一部分,嵌于现存的ATM信今协议中。这些安全技术可透明地加入到B—ISDN的协议参考模型中,无需改变现存的协议标准。 相似文献
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从无线链路与ATM网络2方面阐述了第3代移动通信系统的安全问题,重点讨论了将安全层置于ATM协议栈中不同位置时所对应的4种方案,并据此提出了一种可行的ATM安全协议结构. 相似文献
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ATM技术作为宽带网络技术的核心技术得到了飞速发展,但它同时也存在许多的问题。本文针对ATM的各个重要的方面如:卫星ATM技术,宽带接入,宽带主干网,与IP协议互连以及安全问题讨论了ATM的现状,存在的问题及未来的发展。 相似文献
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讨论了ATM网络技术和ATM网络的特点,用作ATM网络与现有LAN互连的ATMLAN仿真技术,ATM和以太网交换技术的结合,虚拟LAN 相似文献
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该文介绍了移动多媒体通信中无线ATM的基本概念和研究现状,包括无线ATM概念、无线ATM网络分层模型和传输结构。讨论了无线ATM网络中的接入控制技术和差错控制技术。 相似文献
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介绍了异步传输模式(ATM)技术的原理与特点。在简要阐述ATM技术在国内外发展状况的基础上,从无线ATM、基于ATM的无源光网络、ATM与现有网络的兼容三个方面讨论并分析了ATM技术的发展趋势以及ATM研究中存在的问题,为研究ATM提供参考。 相似文献
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分析了银行原有自动柜员机监控的方式和原理。对ATM的监控方式、配置做了基本的描述,并对银行为提升ATM安防管理水平,而采取的监控联网措施和功能性做了分析。对现有ATM监控系统出现的主要问题、存在的缺点和目前我国ATM安保管理问题的严重性做了详细说明。文中介绍了图像识别技术在ATM监控系统中的应用,以及在ATM监控中所起... 相似文献
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S E Forrester 《BT Technology Journal》1998,16(1):52-75
The explosive growth of data networks and their commercial application is driving the need for improved security. This paper aims to raise awareness of the features of secure data networks and the role that encryption plays in this context. An overview of data network security is provided by examining a number of currently available technologies, and how they may be combined to provide a secure network. This is illustrated by a review of existing and proposed encryption services offered by BT/Concert. Taking a glimpse into the future, the ATM Forum's proposals for security in ATM networks are summarised. 相似文献
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H. Cruickshank I. Mertzanis B. G. Evans H. Leitold R. Posch 《International Journal of Satellite Communications and Networking》1998,16(4):183-195
In recent years there has been increasing interest in interconnecting satellite and ATM networks, because both share common characteristics of the ability to provide bandwidth-on-demand and flexibility of integrating voice, video and data services. There are several new satellite constellation proposals that support multimedia service and transport ATM traffic. For a successful implementation of such systems it is essential to address the security requirements of users, satellite ATM network operators and multimedia service providers. In order to minimize delay and the cost of implementing security systems for satellite ATM networks, the network operator role (in security services) can be limited to the mutual authentication with satellite users during call set-up periods. In this paper a mutual authentication protocol between the user and the satellite network is presented using digital signature and public key systems. Also, another mutual authentication protocol between the user and the service provider is presented to provide end-to-end authentication and negotiation of security options such as selecting a secret key system and the key length. Finally, a detailed hardware implementation of ATM cell payload encryption is presented using the DES/TripleDES secret key system. © 1998 John Wiley & Sons, Ltd. 相似文献
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基于改进BP神经网络的ATM系统信息安全评估方法 总被引:2,自引:0,他引:2
根据ATM系统3层体系结构,针对ATM系统面临的信息安全问题,提出了应用人工神经网络(ANN)技术来评估ATM系统信息安全的思想;设计了基于改进的BPANN的ATM系统3层神经网络评估模型。根据建立的BP神经网络模型,以ATM信息系统主要信息安全指标作为训练样本,通过学习和训练找出输入与输出之间的内在联系,用训练好的BP网络对ATM信息系统进行评估,并将评估结果与传统的评估方法进行比较。实验结果表明,提出的评估模型具有很强的自适应性和容错能力,适用于复杂的ATM信息系统的安全性评估。实验数据与实际ATM信息系统的运行状态相吻合。 相似文献
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It is envisioned that asynchronous transfer mode (ATM) will provide scalable and high-performance application-independent security services. The ATM Forum Security Working Group is currently developing its phase one security specification, which defines a number of security services for the ATM user plane and control plane. In addition, mechanisms for carrying security-related messages and required security infrastructure mechanisms are also being defined. These mechanisms will allow an organization to build an ATM network which not only meets its performance objectives, but also its information protection requirements as specified in its site security policy. This article provides an overview of ATM security as specified by the ATM Forum Security Working Group. First, the ATM user and control planes' security services and mechanisms are described. Then the security messaging mechanisms at connection establishment and during the connection lifetime phases are discussed 相似文献