IPv6 is the foundation of the development of Next Generation Internet (NGI). An IPv6 network management and operations support system is necessary for real operable NGI. Presently there are no approved standards yet a...IPv6 is the foundation of the development of Next Generation Internet (NGI). An IPv6 network management and operations support system is necessary for real operable NGI. Presently there are no approved standards yet and relevant equipment interfaces are not perfect. A Network Management System (NMS) at the network layer helps implement the integrated management of a network with equipment from multiple vendors, including the network resources and topology, end-to-end network performance, network failures and customer Service Level Agreement (SLA) management. Though the NMS will finally realize pure IPv6 network management, it must be accommodated to the management of relevant IPv4 equipment. Therefore, modularized and layered structure is adopted for the NMS in order to implement its smooth transition.展开更多
In the study of complex networks almost all theoretical models have the property of infinite growth, but the size of actual networks is finite. According to statistics from the China Internet IPv4 （Internet Protocol ...In the study of complex networks almost all theoretical models have the property of infinite growth, but the size of actual networks is finite. According to statistics from the China Internet IPv4 （Internet Protocol version 4） addresses, this paper proposes a forecasting model by using S curve （logistic curve）. The growing trend of IPv4 addresses in China is forecasted. There are some reference values for optimizing the distribution of IPv4 address resource and the development of IPv6. Based on the laws of IPv4 growth, that is, the bulk growth and the finitely growing limit, it proposes a finite network model with a bulk growth. The model is said to be an S-curve network. Analysis demonstrates that the analytic method based on uniform distributions （i.e., Barabasi-Albert method） is not suitable for the network. It develops an approximate method to predict the growth dynamics of the individual nodes, and uses this to calculate analytically the degree distribution and the scaling exponents. The analytical result agrees with the simulation well, obeying an approximately power-law form. This method can overcome a shortcoming of Barabasi-Albert method commonly used in current network research.展开更多
The IPv4 protocol suite is vulnerable to a variety of attacks. IPv6 security is in many ways the same as IPv4 security, the basic mechanisms for transporting packets across the network stay mostly unchanged, and the u...The IPv4 protocol suite is vulnerable to a variety of attacks. IPv6 security is in many ways the same as IPv4 security, the basic mechanisms for transporting packets across the network stay mostly unchanged, and the upper-layer protocols that transport the actual application data are mostly unaffected. This paper illustrates sniffing threat against IPv4 and then compares how the threat might influence an IPv6 networks. This is prefaced by a brief overview of current practices around the design of an IPv4 Internet edge network and then followed by a review of how that IPv4 edge network needs to evolve in order to secure the addition of IPv6. As IPv6 security is a large and complex subject, and also, IPv6 network is still at the very beginning stage and has not been fully examined in fact, this paper focus on the security requirements of medium edge networks.展开更多
文章主要探讨了医院网际互连协议第4版(Internet Protocol version 4,IPv4)网络向网际互连协议第6版(Internet Protocol version 6,IPv6)网络过渡的通信技术应用,重点分析了双栈技术、隧道技术以及转换技术在过渡过程中的应用。通过华为...文章主要探讨了医院网际互连协议第4版(Internet Protocol version 4,IPv4)网络向网际互连协议第6版(Internet Protocol version 6,IPv6)网络过渡的通信技术应用,重点分析了双栈技术、隧道技术以及转换技术在过渡过程中的应用。通过华为eNSP模拟器构建双栈网络环境,并进行多项测试验证其可行性。结果表明,双栈技术能有效支持IPv4和IPv6协议共存,为医院网络现代化提供技术保障。同时,研究强调在过渡过程中需考虑的安全挑战和设备升级问题,提出了具体的实施策略和优化建议。展开更多
With the advent of large-scale and high-speed IPv6 network technology, an effective multi-point traffic sampling is becoming a necessity. A distributed multi-point traffic sampling method that provides an accurate and...With the advent of large-scale and high-speed IPv6 network technology, an effective multi-point traffic sampling is becoming a necessity. A distributed multi-point traffic sampling method that provides an accurate and efficient solution to measure IPv6 traffic is proposed. The proposed method is to sample IPv6 traffic based on the analysis of bit randomness of each byte in the packet header. It offers a way to consistently select the same subset of packets at each measurement point, which satisfies the requirement of the distributed multi-point measurement. Finally, using real IPv6 traffic traces, the conclusion that the sampled traffic data have a good uniformity that satisfies the requirement of sampling randomness and can correctly reflect the packet size distribution of full packet trace is proved.展开更多
This paper briefly analyzes the advantages of IPv6 used at Intelligent home and describes an IPv6 home network frame. It also studies IPv6 transition technical problems facing home gateways and gives the summaries to ...This paper briefly analyzes the advantages of IPv6 used at Intelligent home and describes an IPv6 home network frame. It also studies IPv6 transition technical problems facing home gateways and gives the summaries to the main protocol of each node of home network and their mutual relations. The key nodes of the home network based on IPv6, including the hardware design and software design of the home gateway and home network controller, are systematically de-signed in the paper. Finally, it illustrates the actual test environment and test in detail. The paper gives a view of the fact that the intelligent home appliances are becoming the current trend with the accelerating the transition of IPv4 to IPv6 and home network-wide implementation of IPv6 is about to become a reality, holding that the network controllers and home gateway based on ARM processor can support IPv6 and carry on the implementation of remote control and local control based on Web Browser.展开更多
“Web of Things” evolved from “Internet of Things”. Lot of research has been done in designing architecture for “Web of Things”. Two main architectures are Smart gateway based architecture and embedded Web Server...“Web of Things” evolved from “Internet of Things”. Lot of research has been done in designing architecture for “Web of Things”. Two main architectures are Smart gateway based architecture and embedded Web Server based architectture. These architectures address some of the basic and essential issues relating to Service Oriented Architecture for “Web of Things”. Taking into consideration the period of coexistence of IPv4 and IPv6 we propose an architecture using SOCKS protocol based IPv6/IPv4 gatewaying and refinements which facilitates smooth heterogeneous communications between the IPv6 and IPv4 enabled embedded nodes and can potentially be used to prevent security threats like Denial-of-Service (DoS) attacks on embedded devices attached to the web and increase its performance. Our architecture provides a way for caching responses from device and thereby increasing its efficiency and performance and yielding quick response times.展开更多
The purpose of this case study paper was to identify factors that Internet Protocol stakeholders consider as standing in the way of the transition to bigger, more secure and faster internet with virtually unlimited In...The purpose of this case study paper was to identify factors that Internet Protocol stakeholders consider as standing in the way of the transition to bigger, more secure and faster internet with virtually unlimited Internet Protocol address in Cameroon and was completed in two phases. Descriptive method was followed and two study instruments were designed and implemented, namely focus group interviews and questionnaire interviews. Both instruments were validated and implemented on a sample of (6) experts for the interviews and (115) for the questionnaire. The focus group data were analyzed using a thematic analysis technique, leading to the identification of six themes including lack of policies and incentives to promote IPv6 deployment at government level, many organizations are seeing IPv6 as an issue that will only affect them in the distant future and not looking at IPv6 technology as an innovation generation opportunity. Decisions on these issues need to change if IPv6 current status in Cameroon is to change. The findings were then validated in the final phase. This involved the deployment of a survey questionnaire to collect opinions of 115 IPv6 actors working in both public and private institutions in Cameroon. The results revealed that IPv6 was not sufficiently attended to by organizations in Cameroon. The study results may be of practical use for Government IT decision makers. A further and more comprehensive research into the topic is recommended.展开更多
Smart distribution grid needs data communication systems as a support to complete their important functions. The smart distribution grid of the data and information are increasingly adopting internet protocol and Ethe...Smart distribution grid needs data communication systems as a support to complete their important functions. The smart distribution grid of the data and information are increasingly adopting internet protocol and Ethernet technology. The IP addresses are more and more important for the smart distribution grid equipment. The current IPv4 protocol occupies a dominant position; therefore, the challenges of the evolution to IPv6 and network security are faced by data communication systems of the smart distribution grid. The importance of data communications network and its main bearer of business were described. The data communications network from IPv4 to IPv6 evolution of the five processes and four stages of the transition were analyzed. The smart distribution grid data communications network security and types of their offensive and defensive were discussed. And the data communications network security architecture was established. It covers three dimensions, the security level, the communications network security engineering and the communications network security management. The security architecture safeguards the evolution to IPv6 for the smart distribution grid data communication systems.展开更多
文摘IPv6 is the foundation of the development of Next Generation Internet (NGI). An IPv6 network management and operations support system is necessary for real operable NGI. Presently there are no approved standards yet and relevant equipment interfaces are not perfect. A Network Management System (NMS) at the network layer helps implement the integrated management of a network with equipment from multiple vendors, including the network resources and topology, end-to-end network performance, network failures and customer Service Level Agreement (SLA) management. Though the NMS will finally realize pure IPv6 network management, it must be accommodated to the management of relevant IPv4 equipment. Therefore, modularized and layered structure is adopted for the NMS in order to implement its smooth transition.
基金Project supported by the National Natural Science Foundation of China (Grant No. 70871082)the Shanghai Leading Academic Discipline Project (Grant No. S30504)
文摘In the study of complex networks almost all theoretical models have the property of infinite growth, but the size of actual networks is finite. According to statistics from the China Internet IPv4 （Internet Protocol version 4） addresses, this paper proposes a forecasting model by using S curve （logistic curve）. The growing trend of IPv4 addresses in China is forecasted. There are some reference values for optimizing the distribution of IPv4 address resource and the development of IPv6. Based on the laws of IPv4 growth, that is, the bulk growth and the finitely growing limit, it proposes a finite network model with a bulk growth. The model is said to be an S-curve network. Analysis demonstrates that the analytic method based on uniform distributions （i.e., Barabasi-Albert method） is not suitable for the network. It develops an approximate method to predict the growth dynamics of the individual nodes, and uses this to calculate analytically the degree distribution and the scaling exponents. The analytical result agrees with the simulation well, obeying an approximately power-law form. This method can overcome a shortcoming of Barabasi-Albert method commonly used in current network research.
基金Supported by the China Next GernerationInternetProgram(CNGI-04-6-2T)
文摘The IPv4 protocol suite is vulnerable to a variety of attacks. IPv6 security is in many ways the same as IPv4 security, the basic mechanisms for transporting packets across the network stay mostly unchanged, and the upper-layer protocols that transport the actual application data are mostly unaffected. This paper illustrates sniffing threat against IPv4 and then compares how the threat might influence an IPv6 networks. This is prefaced by a brief overview of current practices around the design of an IPv4 Internet edge network and then followed by a review of how that IPv4 edge network needs to evolve in order to secure the addition of IPv6. As IPv6 security is a large and complex subject, and also, IPv6 network is still at the very beginning stage and has not been fully examined in fact, this paper focus on the security requirements of medium edge networks.
文摘文章主要探讨了医院网际互连协议第4版(Internet Protocol version 4,IPv4)网络向网际互连协议第6版(Internet Protocol version 6,IPv6)网络过渡的通信技术应用,重点分析了双栈技术、隧道技术以及转换技术在过渡过程中的应用。通过华为eNSP模拟器构建双栈网络环境,并进行多项测试验证其可行性。结果表明,双栈技术能有效支持IPv4和IPv6协议共存,为医院网络现代化提供技术保障。同时,研究强调在过渡过程中需考虑的安全挑战和设备升级问题,提出了具体的实施策略和优化建议。
基金This project was supported by the National Natural Science Foundation of China (60572147,60132030)
文摘With the advent of large-scale and high-speed IPv6 network technology, an effective multi-point traffic sampling is becoming a necessity. A distributed multi-point traffic sampling method that provides an accurate and efficient solution to measure IPv6 traffic is proposed. The proposed method is to sample IPv6 traffic based on the analysis of bit randomness of each byte in the packet header. It offers a way to consistently select the same subset of packets at each measurement point, which satisfies the requirement of the distributed multi-point measurement. Finally, using real IPv6 traffic traces, the conclusion that the sampled traffic data have a good uniformity that satisfies the requirement of sampling randomness and can correctly reflect the packet size distribution of full packet trace is proved.
文摘This paper briefly analyzes the advantages of IPv6 used at Intelligent home and describes an IPv6 home network frame. It also studies IPv6 transition technical problems facing home gateways and gives the summaries to the main protocol of each node of home network and their mutual relations. The key nodes of the home network based on IPv6, including the hardware design and software design of the home gateway and home network controller, are systematically de-signed in the paper. Finally, it illustrates the actual test environment and test in detail. The paper gives a view of the fact that the intelligent home appliances are becoming the current trend with the accelerating the transition of IPv4 to IPv6 and home network-wide implementation of IPv6 is about to become a reality, holding that the network controllers and home gateway based on ARM processor can support IPv6 and carry on the implementation of remote control and local control based on Web Browser.
文摘“Web of Things” evolved from “Internet of Things”. Lot of research has been done in designing architecture for “Web of Things”. Two main architectures are Smart gateway based architecture and embedded Web Server based architectture. These architectures address some of the basic and essential issues relating to Service Oriented Architecture for “Web of Things”. Taking into consideration the period of coexistence of IPv4 and IPv6 we propose an architecture using SOCKS protocol based IPv6/IPv4 gatewaying and refinements which facilitates smooth heterogeneous communications between the IPv6 and IPv4 enabled embedded nodes and can potentially be used to prevent security threats like Denial-of-Service (DoS) attacks on embedded devices attached to the web and increase its performance. Our architecture provides a way for caching responses from device and thereby increasing its efficiency and performance and yielding quick response times.
文摘The purpose of this case study paper was to identify factors that Internet Protocol stakeholders consider as standing in the way of the transition to bigger, more secure and faster internet with virtually unlimited Internet Protocol address in Cameroon and was completed in two phases. Descriptive method was followed and two study instruments were designed and implemented, namely focus group interviews and questionnaire interviews. Both instruments were validated and implemented on a sample of (6) experts for the interviews and (115) for the questionnaire. The focus group data were analyzed using a thematic analysis technique, leading to the identification of six themes including lack of policies and incentives to promote IPv6 deployment at government level, many organizations are seeing IPv6 as an issue that will only affect them in the distant future and not looking at IPv6 technology as an innovation generation opportunity. Decisions on these issues need to change if IPv6 current status in Cameroon is to change. The findings were then validated in the final phase. This involved the deployment of a survey questionnaire to collect opinions of 115 IPv6 actors working in both public and private institutions in Cameroon. The results revealed that IPv6 was not sufficiently attended to by organizations in Cameroon. The study results may be of practical use for Government IT decision makers. A further and more comprehensive research into the topic is recommended.
文摘Smart distribution grid needs data communication systems as a support to complete their important functions. The smart distribution grid of the data and information are increasingly adopting internet protocol and Ethernet technology. The IP addresses are more and more important for the smart distribution grid equipment. The current IPv4 protocol occupies a dominant position; therefore, the challenges of the evolution to IPv6 and network security are faced by data communication systems of the smart distribution grid. The importance of data communications network and its main bearer of business were described. The data communications network from IPv4 to IPv6 evolution of the five processes and four stages of the transition were analyzed. The smart distribution grid data communications network security and types of their offensive and defensive were discussed. And the data communications network security architecture was established. It covers three dimensions, the security level, the communications network security engineering and the communications network security management. The security architecture safeguards the evolution to IPv6 for the smart distribution grid data communication systems.
