386 research outputs found

    De-ossifying the Internet Transport Layer : A Survey and Future Perspectives

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    ACKNOWLEDGMENT The authors would like to thank the anonymous reviewers for their useful suggestions and comments.Peer reviewedPublisher PD

    CloudJet4BigData: Streamlining Big Data via an Accelerated Socket Interface

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    Big data needs to feed users with fresh processing results and cloud platforms can be used to speed up big data applications. This paper describes a new data communication protocol (CloudJet) for long distance and large volume big data accessing operations to alleviate the large latencies encountered in sharing big data resources in the clouds. It encapsulates a dynamic multi-stream/multi-path engine at the socket level, which conforms to Portable Operating System Interface (POSIX) and thereby can accelerate any POSIX-compatible applications across IP based networks. It was demonstrated that CloudJet accelerates typical big data applications such as very large database (VLDB), data mining, media streaming and office applications by up to tenfold in real-world tests

    Unicast UDP Usage Guidelines for Application Designers

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    Publisher PD

    Mobility as a first class function

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    Seamless host mobility has been a desirable feature for a long time, but was not part of the original design of the Internet architecture or protocols. Current approaches to network-layer mobility typically require additional network-layer entities for mobility management, which add complexity to the current engineering landscape of the Internet. We present a host-based, end-to-end architecture for host mobility using the Identifier-Locator Network Protocol (ILNP). ILNP provides mobility support as a first class function, since mobility management is controlled and managed by the end-systems, and does not require additional network-layer entities. We demonstrate an instance of ILNP that is a superset of IPv6 – called ILNPv6 – that is implemented by extending the current IPv6 code in the Linux kernel. We make a direct comparison of performance of ILNPv6 and Mobile IPv6, showing the improved performance of ILNPv6.Postprin

    A new security extension for SCTP

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    In 2000, the Signaling Transport (SIGTRAN) working group of the IETF defined the Stream Control Transmission Protocol (SCTP) as a new transport protocol. SCTP is a new multi-purpose reliable transport protocol. Due to its various features and easy extensibility it is a valid option not only for already standardised applications but also in many new application scenarios. SCTP has several advantages over TCP and UDP. The analysis of already standardised as well as potential SCTP application scenarios clearly indicates that secure end-to-end transport is one of the crucial requirements for SCTP in the future. Up to now there exist two standardised SCTP security solutions which are called TLS over SCTP [37] and SCTP over IPSec [12]. The goal of this thesis was to evaluate existing SCTP security solutions and find an optimised and efficient security solution. Several drawbacks of the standardised SCTP security solutions identified during the analysis are mainly related to features distinguishing SCTP from TCP and UDP. To avoid these drawbacks a new security solution for SCTP, called Secure SCTP (S-SCTP), is proposed which integrates the cryptographic functions into SCTP. One main requirement was that S-SCTP should be fully compatible with standard SCTP while additionally providing strong security i.e. data confidentiality, integrity and authentication. This also means that all features, options and extensions available for standard SCTP have to be supported. Furthermore, S-SCTP should have advantages with respect to performance over all parameter ranges of SCTP and be user-friendly. To specify the S-SCTP protocol extension several new control messages and new message parameters have been defined. Furthermore, procedures for initialisation, rekeying, and termination of secure sessions have been specified and modelled in SDL. Based on an SCTP implementation available in our group and an open source implementation of TLS, TLS over SCTP and S-SCTP have been implemented. These implementations as well as an SCTP over IPSec configuration were used to do comparative performance studies in a lab testbed. These experiments show that the S-SCTP concept achieves its design goals. It supports all features and current extensions of SCTP. Furthermore, it avoids the inefficiencies of the other solutions over a wide range of application scenarios and protocol parameter settings

    A Demonstration Scenario for the NorNet Core Multi-Homed Network Testbed

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    There is extensive on-going research taking place with the goal of implementing transport layer protocols that are able to utilize multi-homing on machines (connection to multiple ISPs). Multi-homing has potential to improve resilience and increase total goodput compared to using a single connection. This would e.g. benefit the trend of more and more services being moved online and into the cloud. The NorNet Core multi-homed network testbed aims to facilitate this research by offering programmable virtual machines located at multiple different sites across the world, accessible for researchers. The aim of this project is the design and implementation of a demonstration platform for NorNet Core that enables the testbed to be illustratively demonstrated to potential new users. This is done by offering users interactive experiments, and geographical visualization of various communication scenarios between nodes in the NorNet Core network in real time. The demonstration platform puts emphasis on demonstrating the unique aspects of NorNet Core compared to other networking testbeds; namely the multi-homed nature and IPv6 support for all of the nodes. This thesis discusses the technical aspects of designing and implementing the platform, as well as demonstrating the finished result with various demonstration scenarios. The Qt programming framework was chosen as the primary development framework for this application
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