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Proceedings ArticleDOI

High precision time synchronization scheme for Distributed Intrusion Detection System

TLDR
This paper provides a scheme of time synchronization based on NTP that uses a new approach to get local clock, which improves the accuracy of local clock and improves the synchronization precision.
Abstract
Time synchronization is an important middleware service of distributed systems, amongst which Distributed Intrusion Detection System (DIDS) makes extensive use of time synchronization in particular1. Time synchronization has become a critical area of research today. Network Time Protocol (NTP) and Precision Time Protocol (PTP) are the current widely accepted standards for synchronizing clock over. This paper makes a comparison on the merits and the shortcomings of the two protocols and then provides a scheme of time synchronization based on NTP. This scheme uses a new approach to get local clock, which improves the accuracy of local clock. The results of experiments approve the scheme is feasible and improves the synchronization precision.

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Citations
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Patent

Monitoring the life cycle of a computer network connection

TL;DR: In this article, a system for monitoring a life cycle of a connection of a network client device to a network includes a security device operable to identify a true identity of the one or more network client devices, identify a client device's connections to and disconnections from the network, determine which client devices have been associated with a particular internet protocol (IP) address, and generate an output of connection and disconnection information associated with the client device.
Journal ArticleDOI

IEEE 1588 based time synchronization system for a seafloor observatory network

TL;DR: An IEEE 1588 based application scheme was proposed to achieve accurate time synchronization for a deep seafloor observatory network based on the communication topological structure of the Zhejiang University Experimental and Research Observatory and indicated that the proposed system is valid and has the potential to realize microsecond accuracy to satisfy the time synchronization requirements of a high-precision seafloring network.
Journal ArticleDOI

Image Acquisition System based on Synchronized High Resolution Gigabit Ethernet Cameras

TL;DR: The novel realization of the scalable and comprehensive image acquisition system based on synchronized high resolution Gigabit Ethernet cameras is presented and results are encouraging and useful for the development of similar solutions.
References
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Journal ArticleDOI

Internet time synchronization: the network time protocol

TL;DR: The NTP synchronization system is described, along with performance data which show that timekeeping accuracy throughout most portions of the Internet can be ordinarily maintained to within a few milliseconds, even in cases of failure or disruption of clocks, time servers, or networks.

Network Time Protocol (Version 3) Specification, Implementation and Analysis

TL;DR: This document describes the Network Time Protocol (NTP), specifies its formal structure and summarizes information useful for its implementation and describes the methods used for their implementation.
Journal ArticleDOI

On the Accuracy and Stablility of Clocks Synchronized by the Network Time Protocol in the Internet System

TL;DR: The experiments demonstrate that timekeeping throughout most portions of the Internet can be maintained to an accuracy of a few tens of milliseconds and a stability of a a few milliseconds per day, even in cases of failure or disruption of clocks, time servers or networks.
Proceedings ArticleDOI

Embedded SynUTC and IEEE 1588 clock synchronization for industrial Ethernet

TL;DR: The architecture and implementation of two systems on a chip, which support high accuracy clock synchronization over Ethernet networks, based on the SynUTC technology and on the novel IEEE 1588 standard for a precision clock synchronization protocol for networked measurement and control systems.
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