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关键词： Heuristic algorithm   NSFNET   Snake-One   Snake-Two  

摘要： The heuristics used to solve the problem of routing and wavelength assignment in optical networks in dynamic scenarios had been partially successful and especially do not respond well when subjected to estrés. This article describes a new strategy called Snake-Two that uses the algorithm Snake-One with the monitoring of network links, trying to concentrate on the most used traffic areas leaving more openings in the rest of the network is proposed, which allows decreasinge the likelihood of blocking incoming network requests. The results improve the average probability of blocking up to 37.7% of the highest obtained results. However, the use of the network continues to increase. These results ensure that the improved care of requests for lower scenarios to 140 Erlangs. © 2017, Universidad de Tarapaca. All rights reserved.

关键词： Communication Research   Ships   algorithms   topology   Mesh networks   access points   Routing algorithms   End users   Long Term Evolution   Data transfer rates  

摘要： This paper proposes a new heterogeneous network topology and a routing algorithm for a marine communication system involving ships and other marine vessels from a terrestrial point on the shore. Topology involves the use of a collection of Long-Term Evolution (LTE) systems and Wi-Fi mesh networks. There are multiple clusters/ships in the network, with an LTE system centered around each cluster. Communication between the clusters happens through LTE, and within the cluster mesh, networking is employed. Every end user in the ship has access to the server application by means of mesh networking from the respective access point in the cluster/ship. The routing algorithm is designed based on the best signal-to-interference-plus-noise-ratio path and minimum delay combination, which selects the best modulation scheme and hence the best data rate. The algorithm employs a new parameter that is derived from signal-to-interference-plus-noise ratio. The topology along with the algorithm provides a connection with a maximum coverage distance of 180 km and minimum data rate around 0.6 Mbps with 2 interconnection clusters. The presence of more interconnection clusters makes the coverage distance, data rate, and reliability greatly improved. Open source network tool Network Simulator 3 is used for the topology design, algorithm implementation, and simulations. The proposed topology and algorithm when implemented can be used to provide long-distance sea communication with improved reliability and higher data rate.

关键词： ARP协议   ARP攻击   漏洞   网络安全   ARP防御  

摘要： 利用ARP协议的漏洞对网络进行攻击,是当前计算机网络所面临的的主要威胁之一。本文首先对ARP协议进行了理论分析,探究了ARP协议的工作原理和存在的漏洞,并根据漏洞进行了ARP攻击和防御的实验,提出了ARP缓存清除,MAC地址静态绑定、划分VLAN等ARP攻击防御的方法。研究结果可以用于局域网内的安全防御,同时整个实验过程还可为高校计算机网络安全教学提供教学实例。

关键词： 网络安全   校园网   ARP攻击   应对策略  

摘要： 在众多威胁校园网络安全因素当中,ARP自身工作的缺陷漏洞常常被利用,攻击者从而施以各类型的网络欺骗。文章从ARP的工作原理角度出发,总结出的3种网络欺骗攻击行为,并针对性的从ARP自身优化以及网络通信环境各个层面分析,提出应对策略,为校园网络安全提供服务。

关键词： 网络协议   IP地址   ARP病毒  

摘要： 最近校局域网中ARP病毒频繁发作,给校内用户造成不便。从ARP协议入手,深入分析了ARP安全漏洞及病毒攻击原理,并对ARP欺骗的原理与攻击方式做了深入的研究,阐明了ARP病毒欺骗的过程,给用户提出解决这个问题的方法。

关键词： IP   over   WDM   业务持续时间   可再生能源   绿色路由   低碳排放  

摘要： 研究了IP over WDM网络的低碳路由问题,综合考虑业务持续时间和利用可再生能源和传统能源供能两个因素,基于分层图模型,提出一种带有业务持续时间感知的绿色路由(HTAGR)算法。HTAGR依据节点处太阳能供能情况以及节点和链路的能耗情况动态调整链路权值,并鼓励选择业务持续时间内需要额外消耗传统能源最少的路径建立连接。仿真结果表明,与传统节能路由算法相比,HTAGR有利于消耗更少的传统能源和使用更多的可再生能源,在保持较低阻塞率的同时,进一步降低了业务平均传统能耗和CO2排放量。

关键词： ARP协议   ARP欺骗   网络安全  

摘要： 近年来,随着互联网的高速发展,各种网络攻击方式也应运而生,其中ARP欺骗已成为网络安全的首要威胁。因此,需要对大量通过互联网存储传输的数据信息加以保护。文章基于ARP(Address Resolution Protocol地址解析协议)的工作原理,对ARP欺骗攻击原理进行分析,阐述ARP欺骗攻击的主要类型,以便防范。

关键词： ARP   IP   MAC   局域网   地址绑定   欺骗攻击   解决方案  

摘要： 引言:本文通过分析了ARP(Address Resolution Protocol)协议的漏洞,ARP攻击的原理,提出了三种ARP欺骗攻击的解决方案。在ARP攻击发生时,能够迅速发现攻击源并给出针对性的措施,有效的保证局域网的安全稳定运行。本文通过分析了ARP(Address Resolution Protocol)协议的漏洞,ARP攻击

关键词： ARP   模拟器   Packet Tracer   教学  

摘要： ARP协议是局域网的重要协议之一,理解ARP协议的工作原理对理解局域网的工作原理有重要意义.本文在ARP协议的教学中运用思科模拟器PacketTracer对ARP协议的工作过程进行模拟,通过理论和实际的结合加深学生对ARP协议的工作原理的理解.

关键词： 局域网   ARP病毒   IP地址  

摘要： ARP病毒主要是利用伪造IP地址与MAC地址的方式,来达到ARP欺骗的目的,造成网络瘫痪无法正常使用。对局域网ARP病毒进行分析,需要掌握其入侵原理,确定网络系统所存安全漏洞,掌握ARP病毒欺骗过程,应用有效检测方法,有针对性的进行防范,来确保网络的安全运行,本文对此进行了简要分析。