Campus LAN Research Articles

The process mining method approach to analyze users’ behavior of internet in the Local Area Network of Sriwijaya University

The Sriwijaya University internet network management unit does not yet have a standard formulation for implementing Bandwidth Management & Bandwidth Allocation. To provide the best service, they apply the Best-Effort Service concept. As a result, it requires a relatively large network capacity and bandwidth provision so that it has an impact on costs. Therefore, it is necessary to know how users use internet bandwidth as the basic principle of Bandwidth Management & Bandwidth Allocation. This study has completed how to determine the behavior of internet users on the campus LAN as a reason to evaluate internet bandwidth usage. With the Process Mining method, process mapping has been carried out for all access to internet usage from all faculties. As a result, the factors that characterize and need to be considered in bandwidth management are obtained. In order of significance are Total Access Length, Average Variance, Number of User Case IDs, Number of Non-Academic Ports, Number of Academic Ports, Number of Access Frequency, Number of Events, and Number of Ports of Service.

Application of Cloud Computing in Education Management Informatization Construction

In recent years, with the rapid development and continuous optimization of computer network information technology, cloud computing technology has already developed from the experimental initial stage to the stage of large-scale computer enterprise application and campus LAN universal application. And driven by scientific and technological innovation, cloud computing provides users with better and safer data management, calculation, storage and other services because of its unique resource sharing and convenient management and maintenance, which has attracted wide attention and favor from all walks of life. The emergence of cloud computing technology has ignited new thinking for our education and teaching. If computer multimedia and Internet, as the previous round of technologies, have brought about changes in teaching presentation, teaching resource acquisition and education transmission, the new technologies based on cloud computing will not only continue to deepen the previous educational changes, but also bring more profound fission to education. Under the guidance of new technology, the ever-changing and innovative “future education” will be more fascinating, and provide us with a broader development space for the construction of educational informationization. With the help of the service advantages of cloud computing, combined with the modern teaching concept, it can be applied to information teaching, which is just conducive to improving the teaching level of higher vocational education and realizing efficient teaching work. At present, most universities in China use cloud computing for teaching management, breaking the traditional mode of university resource management, fully combining with contemporary advanced concepts and technologies, and keeping pace with the times.

Building a MPLS Based Telecommunication Network

Broadband internet has provided a way for people to connect across the country in almost real time. People have started hosting servers and media so they can access their files anywhere. They have also given access to friends who may use their servers to stream files. The rise of broadband internet has also revived the videogame industry and has opened the door to new possibilities. Broadband internet has allowed gamers to connect and play with people all over the globe. The boon of broadband internet has also led to an increase in competitive gaming. Competitive gaming requires minimal lag time, minimum drops, and very low latency to provide a robust experience. Schools and businesses have tapped into the power of broadband internet by creating WANs and hosting their own servers and services. Building a network to provide internet services to these customers is a large and complex endeavor. Similar to a campus LAN or building LAN the telecommunication service provider must be wary of the cost of providing the services. Similar to data center network, the company will need to handle obstacles like collocation and bandwidth utilization. This paper will explore how telecommunication companies can better serve customers like the video game industry and LAN administrators, through a range of technologies and services. This paper will look at MPLS, VPLS, DWDM, and BGP technologies to see how the telecommunication companies can use them to increase customer satisfaction without straining the company’s network. This paper will compare and contrast different protocols, technologies, and design modules to aid in determining what will be the best fit for the company.

Multi-level anomaly detection: Relevance of big data analytics in networks

The Internet has become a vital source of information; internal and external attacks threaten the integrity of the LAN connected to the Internet. In this work, several techniques have been described for detection of such threats. We have focussed on anomaly-based intrusion detection in the campus environment at the network edge. A campus LAN consisting of more than 9000 users with a 90 Mbps internet access link is a large network. Therefore, efficient techniques are required to handle such big data and to model user behaviour. Proxy server logs of a campus LAN and edge router traces have been used for anomalies like abusive Internet access, systematic downloading (internal threats) and DDoS attacks (external threat); our techniques involve machine learning and time series analysis applied at different layers in TCP/IP stack. Accuracy of our techniques has been demonstrated through extensive experimentation on huge and varied datasets. All the techniques are applicable at the edge and can be integrated into a Network Intrusion Detection System.

Design on Monitoring and Management System of Large-Scale Instrument and Expensive Equipment Based on STC MCU

To resolve the problems of large-scale instruments and expensive equipment with low utilization and difficult to unified management in colleges and universities, remote monitoring system is designed based on STC microcontroller, RFID and remote monitoring technology. Field controller hardware circuit was designed and control programs were developed. Identity collecting, user authorization, data acquisition of using process and other functions were realized. Data was transferred by campus LAN or GPRS communication module. User management remote monitoring, data statistics, print statements and other functions were developed in PC. Device information is collected in real time. The unified management of large-scale instruments and expensive equipment was accomplished.

Mitigating the Distributed Denial of Service (DDoS) Attacks in Campus Local Area Network(CLAN)

The Campus Local Area Network (CLAN) of academic institutions interconnect computers ranging from one hundred to about twenty five hundred and these computers are located in academic building(s), hostel building(s), faculty quarter(s), students amenities centre, etc all around the campus. The students, faculty and the supporting staff members use the network primarily for internet usage at both personal and professional levels and secondarily for usage of the available services and resources. Various web based services viz: Web Services, Mail Services, DNS, and FTP services are generally made available in the campus LAN. Apart from these services various intranet based services are also made available for the users of the LAN.
 Campus LAN users from the hostels change very frequently and also sometime become targets (we call as soft targets) to the attackers or zombie because of either inadequate knowledge to protect their own computer/ laptop, which is also a legitimate node of the campus LAN; or their enthusiastic nature of experimentation. The interconnectivity of these legitimates nodes of the campus LAN and that of the attackers in the World Wide Web, make the computers connected in the LAN (nodes) an easy target for malicious users who attempt to exhaust the resources by launching Distributed Denial-of-Service (DDoS) attacks. In this paper we present a technique to mitigate the distributed denial of service attacks in campus wide LAN by limiting the bandwidth of the affected computers (soft targets) of the virtual LAN from a unified threat management (UTM) firewall. The technique is supported with help of bandwidth utilization report of the campus LAN with and without implementation of bandwidth limiting rule; obtained from the UTM network traffic analyzer. The graphical analyzer report on the utilization of the bandwidth with transmitting and receiving bits of the campus LAN after implementation of our bandwidth limiting rule is also given.

Possibility of sound environmental design by introducing wave sound into the indoor space

The purpose of this study is to develop the means of designing sound environment of waterfront area. As one of the means of improving sound environment in the campus space of our university, introducing wave sound from the adjoining seashore into campus area has been proposed and its feasibility have been studied. But wave sound reaches 300m inland at most and cannot be listened in the most of campus area outdoor. So we plan to introduce wave sound by picking up through microphone and steaming over the campus LAN. In this report, if wave sound is streamed and broadcasted to indoor spaces, the influence of wave sound as background/masking noise on the mental state of users in the space is studied. The samples of various wave sound recorded at seashore near the campus are broadcasted in indoor spaces, such as cafeteria, learning spaces etc. And subjects are asked to answer the questionnaire about preference and subjective impression for indoor environment. The results show that wave sound is almost accepted by users, but to be recognized by uses, output level must be high and could be harmful. The optimum level of wave sound in the space is discussed.

ENGLISH

In the information technology era, the technical institutions have radically changed the information environment. Information and communication technology (ICT) has created a new opportunities to effectively store and transmit the digital video over networks. E-learning will be introduced as an integral part of an environment where teaching is transformed and where learning is an ongoing, creative process.1 Along with the basic concepts of e-learning technology and its applications to the technical education using software’s and hardware requirements, the basic objective of science and engineering education in India is to devise and guide reforms that will transform India into a strong and vibrant knowledge economy. In this context, the focus areas for National Programme on Technology Enhanced Learning (NPTEL) project have been (i) higher education, (ii) professional education, (iii) distance education, and (iv) continuous and open learning,2. The E-Vidya solution is deployed on a local high capacity server of required specification where it can be installed in each college campus. Client computers access the streaming media content over the standard high speed campus LAN using a web browser and media player plug-in. http://dx.doi.org/10.14429/djlit.32.6.2842

The Security Experience of Wireless Local Area Network at Ningbo University

The network revolution has dramatically changed the way individuals communicate and conduct business. In the whole network system, WLAN is the most easily linked to the users. The diversity of WLAN communication makes it faced with various information security threats. This paper provides necessary and sufficient conditions for wireless network to lead to an increased security level. Concerns for WLAN security and confidentiality in a university environment were expressed in the paper. A number of recommendations are provided to initiate and promote WLAN security. The contribution of this paper is divided into three parts. Firstly, it introduces the overall network and the WLAN of Ningbo University in general. Secondly, it analyzes different WLAN protocol defects and the information security threats and attacks known in the campus LAN. Thirdly, it provides WLAN communication security precautions and the strategies adopted by our university for solution from the aspects of technique and management respectively.

Detailed Analysis of Skype Traffic

Skype is beyond any doubt the VoIP application in the current Internet application spectrum. Its amazing success has drawn the attention of telecom operators and the research community, both interested in knowing its internal mechanisms, characterizing its traffic, understanding its users' behavior. In this paper, we investigate the characteristics of traffic streams generated by voice and video communications, and the signaling traffic generated by Skype. Our approach is twofold, as we make use of both active and passive measurement techniques to gather a deep understanding on the traffic Skype generates. From extensive testbed experiments, we devise a source model which takes into account: i) the service type, i.e., SkypeOut calls or calls between two Skype clients, ii) the selected source Codec, iii) the adopted transport layer protocol, and iv) network conditions. Leveraging on the use of an accurate Skype classification engine that we recently proposed, we study and characterize Skype traffic based on extensive passive measurements collected from our campus LAN.

Understanding Skype signaling

Skype is without a doubt today's VoIP application of choice. Its amazing success has drawn the attention of both telecom operators and the research community. There is a great interest in characterizing Skype's traffic, understanding its internal mechanisms, and learning about its users' behavior. One of the most interesting characteristics of Skype is that it relies on a P2P infrastructure for the exchange of signaling information that is distributed between peers. Leveraging the use of an accurate Skype classification engine that we recently designed, we now report the results of our experimental study of Skype signaling based on extensive passive measurements collected from our campus LAN. We avoid the need to reverse-engineer the Skype protocol, and we instead adopt a black-box approach. We focus on signaling traffic in order to infer certain interesting properties regarding overlay maintenance and, possibly, the overlay structure as well. Our results show that, even though the signaling bandwidth used by normal peers is exiguous, it may nonetheless account for a significant portion of the total traffic generated by a single Skype client. Skype performs peer discovery and refresh by using a large number of single packet probes. This may be as effective for the purpose of overlay maintenance as it is costly, at least from the viewpoint of layer-4 network devices. At the same time, single-packet probes account for only a minor fraction of all signaling traffic: therefore, we wish to explore more deeply the traffic that is exchanged among the more stable peers, in an attempt to learn how the peer selection mechanism actually operates. Measurements were collected during April and August 2007. In particular, during the second month of sampling, the Skype network suffered a worldwide service outage. We compare the results collected during the two time periods, and we demonstrate the striking impacts on the signaling network as a result of the outage.

A grid-aware MIP solver: Implementation and case studies

This paper presents a grid-enabled system for solving large-scale mixed integer programming (MIP) problems. The system has been developed using Globus and MPICH-G2, and consists of two solvers and an interface portal. After a brief introduction to Branch, Cut and Price optimization algorithms, the paper focuses on the system architecture, solvers and portal user interface. The performance of the system is measured and analysed on a small-scale grid environment consisting of three clusters on a campus LAN.

Hardware Approach for Unauthorized Computer Access and Computer Virus in Wireless Campus LAN

Hardware Approach for Unauthorized Computer Access and Computer Virus in Wireless Campus LAN

Network-enabled digitized collection at the Central library, IIT Delhi

The emergence of the Internet, particularly the World Wide Web (WWW), as a new medium of information delivery, coupled with the availability of powerful hardware, software and networking technology, triggered large-scale commercial and non-commercial digitization programmes the world over. During the past decade, great progress has been made in both theoretical and practical research in the digital library. Besides, acquiring and buying access to digital collections, academic and research libraries are exerting efforts to initiate digital library projects in their respective institutions so as to build their own digital collections. Moreover, proliferation of network-enabled electronic information products are exerting ever-increasing pressure on traditional libraries, which, in turn, are committing larger portions of their budgetary allocation to either procuring or accessing web-based full-text search services, CD-ROM products, online databases, multimedia products, and so forth. The increasing commitment for building up network-enabled digitized collections at the Central Library, IIT Delhi coincides with the installation of a fibre optics based campus LAN connected to a 2 MBps VSNL Radio Link enabling faster access to the Internet for the academic community of the Institute. The availability of high-speed Internet connection has led to the launching of a number of sponsored and unsponsored projects for building network-enabled digitized collections within the framework of the traditional library and information services at the Central Library, IIT Delhi. The Library has adopted a multi-pronged strategy to embark upon the digital world. The article outlines various constituents that contribute to the making of a digital library at the Central Library, IIT Delhi.

Network-enabled digitized collection at the Central library, IIT Delhi

The emergence of the Internet, particularly the World Wide Web (WWW), as a new medium of information delivery, coupled with the availability of powerful hardware, software and networking technology, triggered large-scale commercial and non-commercial digitization programmes the world over. During the past decade, great progress has been made in both theoretical and practical research in the digital library. Besides, acquiring and buying access to digital collections, academic and research libraries are exerting efforts to initiate digital library projects in their respective institutions so as to build their own digital collections. Moreover, proliferation of network-enabled electronic information products are exerting ever-increasing pressure on traditional libraries, which, in turn, are committing larger portions of their budgetary allocation to either procuring or accessing web-based full-text search services, CD-ROM products, online databases, multimedia products, and so forth. The increasing commitment for building up network-enabled digitized collections at the Central Library, IIT Delhi coincides with the installation of a fibre optics based campus LAN connected to a 2 MBps VSNL Radio Link enabling faster access to the Internet for the academic community of the Institute. The availability of high-speed Internet connection has led to the launching of a number of sponsored and unsponsored projects for building network-enabled digitized collections within the framework of the traditional library and information services at the Central Library, IIT Delhi. The Library has adopted a multi-pronged strategy to embark upon the digital world. The article outlines various constituents that contribute to the making of a digital library at the Central Library, IIT Delhi.

医学中央雑誌ＣＤ‐ＲＯＭのマルチプロトコルネットワークでの利用

Yamanashi Medical University developed a retrieval system for the CD-ROM version of Igaku-chuo-zasshi on the Windows NT server. This system can be accessed by either Windows or Macintosh terminals via the campus LAN. This is made possible by taking advantage of the multi-protocol network. We copy the data from the CD-ROMs to the hard disk of the server in order to increase the response of the network. Users enter the system from our home page through the web browser. Each time the search program of the retrieval system is started, the statistical data of the user are stored automatically.

Research-oriented image registry for multimodal image integration

To provide multimodal biomedical images automatically, we constructed the research-oriented image registry, Data Delivery System (DDS). DDS was constructed on the campus local area network. Machines which generate images (imagers: DSA, ultrasound, PET, MRI, SPECT and CT) were connected to the campus LAN. Once a patient is registered, all his images are automatically picked up by DDS as they are generated, transferred through the gateway server to the intermediate server, and copied into the directory of the user who registered the patient. DDS informs the user through e-mail that new data have been generated and transferred. Data format is automatically converted into one which is chosen by the user. Data inactive for a certain period in the intermediate server are automatically achieved into the final and permanent data server based on compact disk. As a soft link is automatically generated through this step, a user has access to all (old or new) image data of the patient of his interest. As DDS runs with minimal maintenance, cost and time for data transfer are significantly saved. By making the complex process of data transfer and conversion invisible, DDS has made it easy for naive-to-computer researchers to concentrate on their biomedical interest.

Making Serial Collection On-Line: A Preparation at Indian Institute of Technology, Kharagpur

The introduction of the computer sytems, and consequent adoption of automated means have considerably improved the growth and the use of book database of the Central Library at Indian Institute of Technology, Kharagpur. Need was increasingly felt to monitor serial control using computer system. The authors assumed responsibility to develop a database of the holdings of the journals. This paper describes the experience gained while designing and preparing back-volume database in electronic fonnat. This database is available on campus LAN and worldwide through ERNET.

253. キャンパスLANを用いた画像データデリバリーシステム

253. キャンパスLANを用いた画像データデリバリーシステム