2,233 research outputs found

    The Road Ahead for Networking: A Survey on ICN-IP Coexistence Solutions

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    In recent years, the current Internet has experienced an unexpected paradigm shift in the usage model, which has pushed researchers towards the design of the Information-Centric Networking (ICN) paradigm as a possible replacement of the existing architecture. Even though both Academia and Industry have investigated the feasibility and effectiveness of ICN, achieving the complete replacement of the Internet Protocol (IP) is a challenging task. Some research groups have already addressed the coexistence by designing their own architectures, but none of those is the final solution to move towards the future Internet considering the unaltered state of the networking. To design such architecture, the research community needs now a comprehensive overview of the existing solutions that have so far addressed the coexistence. The purpose of this paper is to reach this goal by providing the first comprehensive survey and classification of the coexistence architectures according to their features (i.e., deployment approach, deployment scenarios, addressed coexistence requirements and architecture or technology used) and evaluation parameters (i.e., challenges emerging during the deployment and the runtime behaviour of an architecture). We believe that this paper will finally fill the gap required for moving towards the design of the final coexistence architecture.Comment: 23 pages, 16 figures, 3 table

    IP and ATM - current evolution for integrated services

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    Current and future applications make use of different technologies as voice, data, and video. Consequently network technologies need to support them. For many years, the ATM based Broadband-ISDN has generally been regarded as the ultimate networking technology, which can integrate voice, data, and video services. With the recent tremendous growth of the Internet and the reluctant deployment of public ATM networks, the future development of ATM seems to be less clear than it used to be. In the past IP provided (and was though to provide) only best effort services, thus, despite its world wide diffution, was not considered as a network solution for multimedia application. Currently many of the IETF working groups work on areas related to integrated services, and IP is also proposing itself as networking technology for supporting voice, data, and video services. This paper give a technical overview on the competing integrated services network solutions, such as IP, ATM and the different available and emerging technologies on how to run IP over ATM, and tries to identify their potential and shortcomings

    Performance Measurement of Web Services Linux Virtual Server

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    With the rapid expansion in the use of internet services such as web browsing, mails, audio and video files downloading, servers' needs to manage with greater strain resources and actions. Demand for total number of clients supported by the servers has increased significantly. With a continues increase in total number of users and as a result escalating work load makes businesses uncertain about their actions with the passage of time. In addition rapid response and 24 hours availability becoming mandatory necessities for many big critical businesses applications as a result, the necessity of providing support for extremely expandable, sustainable and available services is becoming crucial. Linux Virtual Server is the best solution for providing businesses such critical services. Linux Virtual Server is an open source tool, used to establish expandable, sustainable and highly available server using a number of real servers and a front end Director. Linux Virtual Server has the ability to balance Load of a number of network services amongst several real servers using different scheduling algorithms and packet forwarding methods which suits bests for services and hardware limitations. In this project a web services Linux Virtual Server will be established using NAT (Network Address Translation) packet forwarding method and using three different scheduling algorithms, Round Robin, Weighted Round Robin and least Connection. With each scheduling algorithm number of test setup will be conducted by varying number of real servers used in the Linux Virtual Server Cluster, varying HTTP traffic through using different size of data files downloaded from the real servers and also varying number of request send per second

    LightBox: Full-stack Protected Stateful Middlebox at Lightning Speed

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    Running off-site software middleboxes at third-party service providers has been a popular practice. However, routing large volumes of raw traffic, which may carry sensitive information, to a remote site for processing raises severe security concerns. Prior solutions often abstract away important factors pertinent to real-world deployment. In particular, they overlook the significance of metadata protection and stateful processing. Unprotected traffic metadata like low-level headers, size and count, can be exploited to learn supposedly encrypted application contents. Meanwhile, tracking the states of 100,000s of flows concurrently is often indispensable in production-level middleboxes deployed at real networks. We present LightBox, the first system that can drive off-site middleboxes at near-native speed with stateful processing and the most comprehensive protection to date. Built upon commodity trusted hardware, Intel SGX, LightBox is the product of our systematic investigation of how to overcome the inherent limitations of secure enclaves using domain knowledge and customization. First, we introduce an elegant virtual network interface that allows convenient access to fully protected packets at line rate without leaving the enclave, as if from the trusted source network. Second, we provide complete flow state management for efficient stateful processing, by tailoring a set of data structures and algorithms optimized for the highly constrained enclave space. Extensive evaluations demonstrate that LightBox, with all security benefits, can achieve 10Gbps packet I/O, and that with case studies on three stateful middleboxes, it can operate at near-native speed.Comment: Accepted at ACM CCS 201

    Secure service proxy : a CoAP(s) intermediary for a securer and smarter web of things

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    As the IoT continues to grow over the coming years, resource-constrained devices and networks will see an increase in traffic as everything is connected in an open Web of Things. The performance- and function-enhancing features are difficult to provide in resource-constrained environments, but will gain importance if the WoT is to be scaled up successfully. For example, scalable open standards-based authentication and authorization will be important to manage access to the limited resources of constrained devices and networks. Additionally, features such as caching and virtualization may help further reduce the load on these constrained systems. This work presents the Secure Service Proxy (SSP): a constrained-network edge proxy with the goal of improving the performance and functionality of constrained RESTful environments. Our evaluations show that the proposed design reaches its goal by reducing the load on constrained devices while implementing a wide range of features as different adapters. Specifically, the results show that the SSP leads to significant savings in processing, network traffic, network delay and packet loss rates for constrained devices. As a result, the SSP helps to guarantee the proper operation of constrained networks as these networks form an ever-expanding Web of Things

    Pando: Personal Volunteer Computing in Browsers

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    The large penetration and continued growth in ownership of personal electronic devices represents a freely available and largely untapped source of computing power. To leverage those, we present Pando, a new volunteer computing tool based on a declarative concurrent programming model and implemented using JavaScript, WebRTC, and WebSockets. This tool enables a dynamically varying number of failure-prone personal devices contributed by volunteers to parallelize the application of a function on a stream of values, by using the devices' browsers. We show that Pando can provide throughput improvements compared to a single personal device, on a variety of compute-bound applications including animation rendering and image processing. We also show the flexibility of our approach by deploying Pando on personal devices connected over a local network, on Grid5000, a French-wide computing grid in a virtual private network, and seven PlanetLab nodes distributed in a wide area network over Europe.Comment: 14 pages, 12 figures, 2 table

    Analysing and upgrading the network infrastructure of a supermarket chain

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    This thesis is part of a project consisting on the network replacement of all supermarket chain's stores. The motivation of this renewal is that the store's network has become outdated, obsolete and unsecure. In this thesis, the weak points of the old network are analysed and a proposal for its settlement and improvement is shown step by step, starting from scratch. In addition, the infrastructure of both networks is also reviewed, analysing what are the characteristics of nowadays network devices available on the market and its manufacturers. The proposed final design incorporates Layer 3 and Layer 2 diagrams, including the planning of firewalls provision, routing, switching and redundancy of the network devices. An insight on the protocols that are currently used to overcome arising issues are also discussed
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