29,520 research outputs found
A Security Monitoring Framework For Virtualization Based HEP Infrastructures
High Energy Physics (HEP) distributed computing infrastructures require
automatic tools to monitor, analyze and react to potential security incidents.
These tools should collect and inspect data such as resource consumption, logs
and sequence of system calls for detecting anomalies that indicate the presence
of a malicious agent. They should also be able to perform automated reactions
to attacks without administrator intervention. We describe a novel framework
that accomplishes these requirements, with a proof of concept implementation
for the ALICE experiment at CERN. We show how we achieve a fully virtualized
environment that improves the security by isolating services and Jobs without a
significant performance impact. We also describe a collected dataset for
Machine Learning based Intrusion Prevention and Detection Systems on Grid
computing. This dataset is composed of resource consumption measurements (such
as CPU, RAM and network traffic), logfiles from operating system services, and
system call data collected from production Jobs running in an ALICE Grid test
site and a big set of malware. This malware was collected from security
research sites. Based on this dataset, we will proceed to develop Machine
Learning algorithms able to detect malicious Jobs.Comment: Proceedings of the 22nd International Conference on Computing in High
Energy and Nuclear Physics, CHEP 2016, 10-14 October 2016, San Francisco.
Submitted to Journal of Physics: Conference Series (JPCS
An Application of Multimedia Services on Transportation: The Use of the World Wide Web (WWW)
INTRODUCTION
In recent years, there is an ever-increasing demand and interest in the use of multimedia
technology and applications in industry, government and academia. Multimedia is often
seen by researchers as the next step forward in interfacing science, technology and
community. Yet, the terminology of multimedia bears several meanings. It may refer to
Compact Disc (CD), moving pictures or video-conferencing. The multimedia technology
referred in this paper is the World Wide Web (WWW) hypertext publishing information
system which was developed by and started at the European Laboratory for Particle
Physics (CERN) in Geneva, Switzerland. Since the introduction of WWW, its use has
increased dramatically within a couple of years in a widely diverse community including
government departments, university and research establishments, and commercial
organisations. It has significant influence to our communities and our daily lives. Yet, in
most cases, applications of WWW services are largely restricted to electronic library
referencelcatalogue search facilities, electronic mail systems, electronic conference and
discussion systems, electronic news and publishing agents, and remote access to computing
resources on the Internet.
The primary objective of this paper is to exploit the potential of this multimedia technology
as a simple, easy-to-use and effective means of telematics application in transportation
research. It is hoped that initiatives are highlighted via this study and hence encourage
participations and collaborations from different sectors of industries.
In this paper, a brief history of WWW is given in section (2). An overview of the technical
aspects in providing a WWW service is presented in section (3) in terms of computer
hardware requirements, software installation, network connections, application
maintenance and administration, and system security. Compared to most commercially
available multimedia software in the market, WWW services are cheap to run, userfriendly
and readily available to the public on the Internet. In order to exploit the potential
of WWW on transportation research, a study was carried out and results of the findings are
reported in section (4). To further substantiate the level of usefulness, two particular
WWW applications were chosen amongst other web services and they are reported in
section (5) for illustrative purposes. The selected applications are the 'Transportation
Resources on the Internet' developed in mid-1994 in the Institute for Transport Studies
(ITS) at the University of Leeds in England, and the 'Southern California Real-Time
Traffic Report' developed by Maxwell Laboratories, Inc. in collaboration with the
California State Department of Transportation in the US. Finally, a set of issues are raised
in section (6), highlighting the directions of future development of WWW as an easy-touse,
cheap and effective multimedia telematics application on transportation
An Efficient Transport Protocol for delivery of Multimedia An Efficient Transport Protocol for delivery of Multimedia Content in Wireless Grids
A grid computing system is designed for solving complicated scientific and
commercial problems effectively,whereas mobile computing is a traditional
distributed system having computing capability with mobility and adopting
wireless communications. Media and Entertainment fields can take advantage from
both paradigms by applying its usage in gaming applications and multimedia data
management. Multimedia data has to be stored and retrieved in an efficient and
effective manner to put it in use. In this paper, we proposed an application
layer protocol for delivery of multimedia data in wireless girds i.e.
multimedia grid protocol (MMGP). To make streaming efficient a new video
compression algorithm called dWave is designed and embedded in the proposed
protocol. This protocol will provide faster, reliable access and render an
imperceptible QoS in delivering multimedia in wireless grid environment and
tackles the challenging issues such as i) intermittent connectivity, ii) device
heterogeneity, iii) weak security and iv) device mobility.Comment: 20 pages, 15 figures, Peer Reviewed Journa
Installing, Running and Maintaining Large Linux Clusters at CERN
Having built up Linux clusters to more than 1000 nodes over the past five
years, we already have practical experience confronting some of the LHC scale
computing challenges: scalability, automation, hardware diversity, security,
and rolling OS upgrades. This paper describes the tools and processes we have
implemented, working in close collaboration with the EDG project [1],
especially with the WP4 subtask, to improve the manageability of our clusters,
in particular in the areas of system installation, configuration, and
monitoring. In addition to the purely technical issues, providing shared
interactive and batch services which can adapt to meet the diverse and changing
requirements of our users is a significant challenge. We describe the
developments and tuning that we have introduced on our LSF based systems to
maximise both responsiveness to users and overall system utilisation. Finally,
this paper will describe the problems we are facing in enlarging our
heterogeneous Linux clusters, the progress we have made in dealing with the
current issues and the steps we are taking to gridify the clustersComment: 5 pages, Proceedings for the CHEP 2003 conference, La Jolla,
California, March 24 - 28, 200
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