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Provisioning of inter-domain QoS-Aware Services

Journal of Computer Science & Technology 2015年第2期30卷 404-420页

作者： Fernando Matos Alexandre Matos Paulo Simoes Edmundo Monteiro Department of Computer Systems Federal University of Paraba Jodo Pessoa 58051-900 Brazil Department of Information Systems State University of Santa Catarina Sao Bento do Sul 89283-081 Brazil Department of Informatics Engineering University of Coimbra Coimbra 3030-290 Portugal Centre for Informatics and Systems University of Coimbra Coimbra 3030-290 Portugal

Cooperation among service providers, network providers, and access providers in the internet allows the creation of new services to offer to customers that are in other domains, thus increasing revenue. However, the internet heterogeneous environment, where each provider has its own policies, infrastructure and business goals, hinders the deployment of more advanced communication services. This paper presents a Quality of Service （QoS） for inter-domain Services （QIDS） model that allows inter-domain QoS-aware services to be defined, configured, and adapted in a dynamic and on-demand fashion, among service providers. This is accomplished by： 1） the use of a common communication channel （business layer） where service providers publish and search for services, and interact with each other to contract and manage these services; 2） the templates to specify the business and technical characteristics of the services; 3） the automatic composition of services using service dements （smaller services） a^cording to performance and service-specific QoS parameters; and 4） the creation and enforcement of configuration rules for the underlying infrastructure. A prototype was implemented to validate QIDS and performance tests were conducted on an inter-domain Border Gateway Protocol （BGP）/Multiprotocol Label Switching （MPLS） Virtual Private Network （VPN） scenario.

关键词： service provisioning inter-domain QoS service composition

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Improving inter-domain Fast Handover Using MIH Services in Mobile WiMAX

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international Journal of Communications, Network and System Sciences 2012年第11期5卷 743-752页

作者： Ghaida A. Al-Suhail Huda J. Al-Hammedy Department of Computer Engineering University of Basrah Basrah Iraq

Recently, the IP connectivity during the Mobile Node (MN) movement between Base Stations (BSs) belonging to different internet Service Providers (ISPs) is still a key issue to be tackled. In this paper, therefore, we develop a new scheme to improve the performance of inter-domain fast handover over mobile WiMAX networks. The framework basically relies on the Fast Handover for Mobile IPv6 protocol (FMIPv6) when the Media Independent Information Services (MIIS) as defined in IEEE802.21 standard is applied to enable the Mobile Node in storing the information of the neighboring networks. A Fully Qualified domain Name (FQDN) is also used to identify the IP address of the previous network operator and the MN during its movements. Since both MIIS and FQDN can support the node mobility between multiple domains, our proposed scheme can also be called P-FMIPv6. The numerical results show that the latency of IP connectivity of this proposed handover can be significantly reduced in addition to less service disruption time during handovers as compared to the existing FMIPv6 when IEEE802.16e network is considered.

关键词： Handover MIPv6 FMIPv6 inter-domain MIIS FQDN Mobile WiMAX

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Practical Security Approaches against Border Gateway Protocol (BGP) Session Hijacking Attacks between Autonomous Systems

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Journal of Computer and Communications 2014年第8期2卷 10-21页

作者： Stephen Brako Oti James Ben Hayfron-Acquah Computer Science Department Kwame Nkrumah University of Science & Tech. Kumasi Ghana Information Technology Department Methodist University College Accra Ghana

The border gateway protocol (BGP) is the default inter domain routing protocol used on the internet for exchanging information between autonomous systems. Available literature suggests that BGP is vulnerable to session hijacking attacks. There are a number of proposals aimed at improving BGP security which have not been fully implemented. This paper examines a number of approaches for securing BGP through a comparative study and identifies the reasons why these proposals have not been implemented commercially. This paper analyses the architecture of internet routing and the design of BGP while focusing on the problem of BGP session hijacking attacks. Using Graphical Network Simulator 3 (GNS-3), a session hijack is demonstrated and a solution which involves the implementation of route filtering, policy-maps and route-maps on CISCO routers representing ASes is carried out. In the end, a workable industry standard framework for securing and protecting BGP sessions and border routers from exploitation with little or no modification to the existing routing infrastructure is demonstrated.

关键词： inter-domain Routing Session Hijacking Bgp Security Autonomous Systems

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An improved cross-domain role mapping mechanism

An improved cross-domain role mapping mechanism

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2010 international Conference on Circuit and Signal Processing (ICCSP 2010) & 2010 Second IITA international Joint Conference on Artificial Intelligence (IITA-JCAI 2010)

作者： Jun Zheng,Yichun Chen School of Computer Science and Technology Beijing Institute of Technology Beijing 100081,China Qikun Zhang,Yuan TAN and Qiongxin Liu School of Computer Science and Technology Beijing Institute of Technology Beijing 100081,China

Aimed at the aberrations of inter-domain role mapping issues including privilege-aberration and role aberration,an improved inter-domain role mapping mechanism was purposed in this article,and it can guarantee the consistency of the user privilege and the relationships among *** makes utility of the role-privilege relation,and maintains a "permitted privilege list" and a "forbidden privilege list" for each role,and thus provides more flexibility for role mapping,and it can determine whether a certain role-mapping is legal within constant time using closure algorithm,and to make that algorithm more efficiency,a pre-calculation method is purposed.

关键词： role mapping inter-domain role-privilege utility

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