Analisis Kinerja Remote Server Administrator Untuk Managemen Jaringan Komputer

In the computer networking world, administration and configuration in a UNIX based server are usuallyperformed in terminal or shell in which administrator interact with the server. This is common for administratorthat is used to interact with Command Line Interface or shell. For those who have not used to it will have agreat obstacle to deal with . Thus, there are many people created web based application to perform admnitrationon UNIX server such as webmin. But, o have web based network manajement application, a server must has webserver services.This prequisite will not be a problem for a server that is designed to perform web application.But for dedicated server having services not web application, it will bring a compromise in considerationespecially in security and reliability issue. Additional web application will bring concequences to open severalport. That is obviously incereases server vulnerability. In other hand, additional web application will take someresources of a server which are actually designed for certain services. Thus, our previous research has promotean RSA application to manage a server. RSA is web application to manage remote servers. Connection betweenuser and RSA performed using http port while connection between RSA and remote server performed using SSHport. So, a server doesn\u27t have to open additional port except SSH port that is ussualy already opened foradministration purpose RSA was developed using CGI-PERL script with APACHE as it web server. Severalservices that can be configure using this RSA are APACHE web server, BIND name server and SQUID proxyserver. Unfortunately, after observing this application further, we found that this solution has it\u27s owndisadvantages. This paper will speak about the result of RSA application analysis

Design Architecture-Based on Web Server and Application Cluster in Cloud Environment

Cloud has been a computational and storage solution for many data centric organizations. The problem today those organizations are facing from the cloud is in data searching in an efficient manner. A framework is required to distribute the work of searching and fetching from thousands of computers. The data in HDFS is scattered and needs lots of time to retrieve. The major idea is to design a web server in the map phase using the jetty web server which will give a fast and efficient way of searching data in MapReduce paradigm. For real time processing on Hadoop, a searchable mechanism is implemented in HDFS by creating a multilevel index in web server with multi-level index keys. The web server uses to handle traffic throughput. By web clustering technology we can improve the application performance. To keep the work down, the load balancer should automatically be able to distribute load to the newly added nodes in the server

A scalable application server on Beowulf clusters : a thesis presented in partial fulfilment of the requirement for the degree of Master of Information Science at Albany, Auckland, Massey University, New Zealand

Application performance and scalability of a large distributed multi-tiered application is a core requirement for most of today's critical business applications. I have investigated the scalability of a J2EE application server using the standard ECperf benchmark application in the Massey Beowulf Clusters namely the Sisters and the Helix. My testing environment consists of Open Source software: The integrated JBoss-Tomcat as the application server and the web server, along with PostgreSQL as the database. My testing programs were run on the clustered application server, which provide replication of the Enterprise Java Bean (EJB) objects. I have completed various centralized and distributed tests using the JBoss Cluster. I concluded that clustering of the application server and web server will effectively increase the performance of the application running on them given sufficient system resources. The application performance will scale to a point where a bottleneck has occurred in the testing system, the bottleneck could be any resources included in the testing environment: the hardware, software, network and the application that is running. Performance tuning for a large-scale J2EE application is a complicated issue, which is related to the resources available. However, by carefully identifying the performance bottleneck in the system with hardware, software, network, operating system and application configuration. I can improve the performance of the J2EE applications running in a Beowulf Cluster. The software bottleneck can be solved by changing the default settings, on the other hand, hardware bottlenecks are harder unless more investment are made to purchase higher speed and capacity hardware

VisIVO - Integrated Tools and Services for Large-Scale Astrophysical Visualization

VisIVO is an integrated suite of tools and services specifically designed for the Virtual Observatory. This suite constitutes a software framework for effective visual discovery in currently available (and next-generation) very large-scale astrophysical datasets. VisIVO consists of VisiVO Desktop - a stand alone application for interactive visualization on standard PCs, VisIVO Server - a grid-enabled platform for high performance visualization and VisIVO Web - a custom designed web portal supporting services based on the VisIVO Server functionality. The main characteristic of VisIVO is support for high-performance, multidimensional visualization of very large-scale astrophysical datasets. Users can obtain meaningful visualizations rapidly while preserving full and intuitive control of the relevant visualization parameters. This paper focuses on newly developed integrated tools in VisIVO Server allowing intuitive visual discovery with 3D views being created from data tables. VisIVO Server can be installed easily on any web server with a database repository. We discuss briefly aspects of our implementation of VisiVO Server on a computational grid and also outline the functionality of the services offered by VisIVO Web. Finally we conclude with a summary of our work and pointers to future developments

Assessing the benefits of Ajax in mobile learning systems design : a thesis submitted in partial fulfillment of the requirements for a Master of Information Studies at Massey University

Today, mobile technology is rapidly changing our life with increasing numbers of services supported by mobile phones, including mobile Internet access and Web-based mobile learning. The growth of the wireless Internet technology opens new path for people to study in anytime and any location. Using Web-based mobile application to present learning resources for mobile learners is a challenge for developers, because the mobile Internet access performance over GPRS networks is often unacceptably slow. A new Web development model, Ajax, may help to address this problem. Ajax (Asynchronous JavaScript and XML), is a new desktop approach to Web application development that uses client-side scripting to provide a seamless user application experience and reduce traffic between client and server. In this paper, we address the question of whether mobile Ajax provides measurable performance advantages over non-Ajax mobile learning applications. A real-life Web-based mobile learning application performance over a GPRS network study was done based on comparing an Ajax application and an Active Server Pages (ASP) application with identical functionality. Our results suggest that mobile Ajax can reduce the bandwidth requirement by 71%, and cut the server's response time in half. In addition, these performance improvements were noticed by users in our small group usability test

File Transfer Web Application

Aim is to develop a web application using java web framework. Description: Develop a web application in 3 tier architecture involving user interface, controller and database. The user interface will be a web page hosted on a server. The web page consists of both static and dynamic content. All the data required for the application is stored in database tables. Controller accesses the data from the database and provides it to the user through user interface (web page). Web page: The webpage serves as user interface to the application. Web page is developed using Jsp, HTML, Java Script and Ajax. Controller: The controller serves as the communicating interface between web page and database. Controller serves the data to the user based on the user request. Controller is developed using Java 7, Java Servlets, and JDBC. Database: Database is used to store all the required data for the application. Database tables are designed according to requirement and developed using SQL. Server: Server is used to host the application. The developed web application is deployed onto server. Apache Tomcat is the application server for the application. Environment: Java 7, HTML, Java Script, JDBC, Ajax, Apache Tomcat, Derby Database, SQL

Developing a Web Server Platform with SAPI support for AJAX RPC using JSON

Writing a custom web server with SAPI support is a useful task which helps students and future system architects to understand the link between network programming, object oriented programming, enterprise application designing patterns and development best practices because it offers a vision upon interprocess communication and application extensibility in a distributed environmentWeb, Server, Proxy, SAPI, HTTP, RPC, AJAX, JSON, XML