Evaluasi Persiapan Pelaksanaan Program Sistem Administrasi Perkantoran Maya (Simaya) di Sekretariat Daerah Provinsi Sumatera Barat

The implementation of Virtual Office Administration System (SiMAYA) in Secretariat Office of West Sumatera Province still faced various obstacles, such as lack of regulation, limited of human resources, and so on. The purpose of this study was to determine the determinant factors in the implementation of SIMAYA program, and efforts made in overcoming the problem. This study was conducted through a qualitative research using descriptive method. The informants of this study were determined through purposive technique. The data of this study were collected through observation, interview, and documentation study. Then, the data were analyzed by interactive model analysis technique. The finding of this study indicated that (1) The implementation of Virtual Office Administration System (siMAYA) in West Sumatera Provincial Secretariat had not been effective; (2) There were still many inhibiting factors in the implementation of siMAYA program in West Sumatera Provincial Secretariat office, such as limited human resources, lack of hardware devices, unclear software usage, lack of data, and limited of LAN network. (3) Efforts made in overcoming these barriers include human resources training and completing the facilities and infrastructures

A service oriented broker-based approach for dynamic resource discovery in virtual networks

© 2015, Rabah et al.; licensee Springer. In the past few years, the concept of network virtualization has received significant attention from industry and research fora. This concept applies virtualization to networking infrastructures by enabling the dynamic creation of several co-existing logical network instances (or virtual networks) over a shared physical network infrastructure (or substrate network). Due to the potential it offers in terms of diversifying existing networks and ensuring the co-existence of heterogeneous network architectures on top of shared substrates, network virtualization is often considered as an enabler of a polymorphic Internet and a cornerstone of the future Internet architecture. One of the challenges associated with the network virtualization concept is the description, publication, and discovery of virtual resources that can be composed to form virtual networks. To achieve those tasks, there is a need for an expressive information model facilitating information representation and sharing, as well as an efficient resource publication and discovery framework. In this paper, we propose a service oriented, broker-based framework for virtual resource description, publication, and discovery. This framework relies on a novel service-oriented hierarchical business model and an expressive information model for resources/services description. The detailed framework’s architecture is presented, and its operation is illustrated using a REST-based content distribution scenario. Furthermore, a proof-of-concept prototype implementation realized using various technologies/tools (e.g. Jersey, JAXB, PostgreSQL, and Xen cloud platform) is presented along with a detailed performance analysis of the system. When compared to existing virtual resource discovery frameworks, our broker-based virtual resource discovery framework offers signification performance improvements of the virtual resources’ discovery operation, in terms of response time (92.8% improvement) and incurred network load (77.3% improvement), when dealing with multiple resource providers. Furthermore, relying on a broker as intermediary role simplifies the resources’ discovery and selection operations, and improves the overall efficiency of the virtual network embedding process

Extending the Capabilities of Closed-loop Distributed Engine Control Simulations Using LAN Communication

Distributed Engine Control (DEC) is an enabling technology that has the potential to advance the state-of-the-art in gas turbine engine control. To analyze the capabilities that DEC offers, a Hardware-In-the-Loop (HIL) test bed is being developed at NASA Glenn Research Center. This test bed will support a systems-level analysis of control capabilities in closed-loop engine simulations. The structure of the HIL emulates a virtual test cell by implementing the operator functions, control system, and engine on three separate computers. This implementation increases the flexibility and extensibility of the HIL. Here, a method is discussed for implementing these interfaces by connecting the three platforms over a dedicated Local Area Network (LAN). This approach is verified using the Commercial Modular Aero-Propulsion System Simulation 40k (C-MAPSS40k), which is typically implemented on one computer. There are marginal differences between the results from simulation of the typical and the three-computer implementation. Additional analysis of the LAN network, including characterization of network load, packet drop, and latency, is presented. The three-computer setup supports the incorporation of complex control models and proprietary engine models into the HIL framework

The FBI Virtual Case File: A Case Study

The Federal Bureau of Investigation (FBI) began developing a case management software system called the Virtual Case File in 2000, but eventually abandoned the project in April 2005. The cost of this project was estimated to be over $170 million, and this waste of tax payer money drew sharp criticism. The impetus for the project was due to the FBI’s aging technology infrastructure that included 386-based personal computers and a 12-year-old network system. In 2000, Congress allocated almost$340 million for the proposed FBI Information Technology Upgrade Project (FITUP) that was soon divided into three parts and renamed Trilogy. This project was scheduled to take three years and included an enterprise-wide upgrade of desktop hardware and software and the implementation of a more modern and secure network. In addition, a Virtual Case File system would include a case management system, an evidence management system, and a records management system that would replace the FBI’s antiquated case management system which limited the FBI’s ability to carry out its mission effectively. This study provides a qualitative analysis of this IT project failure. More specifically, this study attempts to answer the questions: Was the failure of the FBI’s Virtual Case File project unique? Or does it share common characteristics with other IT project failures? This case study should be of interest to IT academics in terms of teaching project management or as a theoretical basis for guiding future research. This study should also be of interest to IT practitioners in terms of understanding some important project management challenges when attempting to implement an IT solutio

Using Self-Organizing Maps for the Behavioral Analysis of Virtualized Network Functions

Detecting anomalous behaviors in a network function virtualization infrastructure is of the utmost importance for network operators. In this paper, we propose a technique, based on Self-Organizing Maps, to address such problem by leveraging on the massive amount of historical system data that is typically available in these infrastructures. Indeed, our method consists of a joint analysis of system-level metrics, provided by the virtualized infrastructure monitoring system and referring to resource consumption patterns of the physical hosts and the virtual machines (or containers) that run on top of them, and application-level metrics, provided by the individual virtualized network functions monitoring subsystems and related to the performance levels of the individual applications. The implementation of our approach has been validated on real data coming from a subset of the Vodafone infrastructure for network function virtualization, where it is currently employed to support the decisions of data center operators. Experimental results show that our technique is capable of identifying specific points in space (i.e., components of the infrastructure) and time of the recent evolution of the monitored infrastructure that are worth to be investigated by human operators in order to keep the system running under expected conditions

Tailoring the Cyber Security Framework: How to Overcome the Complexities of Secure Live Virtual Machine Migration in Cloud Computing

This paper proposes a novel secure live virtual machine migration framework by using a virtual trusted platform module instance to improve the integrity of the migration process from one virtual machine to another on the same platform. The proposed framework, called Kororā, is designed and developed on a public infrastructure-as-a-service cloud-computing environment and runs concurrently on the same hardware components (Input/Output, Central Processing Unit, Memory) and the same hypervisor (Xen); however, a combination of parameters needs to be evaluated before implementing Kororā. The implementation of Kororā is not practically feasible in traditional distributed computing environments. It requires fixed resources with high-performance capabilities, connected through a high-speed, reliable network. The following research objectives were determined to identify the integrity features of live virtual machine migration in the cloud system: To understand the security issues associated with cloud computing, virtual trusted platform modules, virtualization, live virtual machine migration, and hypervisors; To identify the requirements for the proposed framework, including those related to live VM migration among different hypervisors; To design and validate the model, processes, and architectural features of the proposed framework; To propose and implement an end-to-end security architectural blueprint for cloud environments, providing an integrated view of protection mechanisms, and then to validate the proposed framework to improve the integrity of live VM migration. This is followed by a comprehensive review of the evaluation system architecture and the proposed framework state machine. The overarching aim of this paper, therefore, is to present a detailed analysis of the cloud computing security problem, from the perspective of cloud architectures and the cloud service delivery models. Based on this analysis, this study derives a detailed specification of the cloud live virtual machine migration integrity problem and key features that should be covered by the proposed framewor

Design and implementation of a 5G testbed in a virtualized environment

The new 5G network is one of the hot-topics of this century and promises great improvements in the world of mobile networks, network applications and the way society interacts with itself and technology. As this new network is a very complex and articulated system, the management and maintenance tools will also have to evolve accordingly. In this thesis, I attempt to introduce the concept of the digital twin, already imagined in the book Mirror Worlds by David Gelernter, to the context of the 5G network. The digital twin is a tool for supervision, control and analysis that combines the use of data, Machine Learning and simulation environments in order to create a virtual parallel system, faithful to the real one, that reacts to the same stimuli as its physical twin. This concept already exists in the engineering world in various forms. Thanks to the BNN (Barcelona Neural Network centre) research group, we have applied this idea to the 5G-core network, a concept that has already been theoretically explored by others but which to date has not found a real implementation. The following work consists of the design and development of a testbed in order to run simulations of plausible 5G network usage scenarios through simulators. The goal is to obtain datasets to train artificial intelligence models to predict certain aspects of network behavior

Service Oriented Architecture in Network Security - a novel Organisation in Security Systems

Current network security systems are a collection of various security components, which are directly installed in the operating system. These check the whole node for suspicious behaviour. Armouring intrusions e.g. have the ability to hide themselves from being checked. We present in this paper an alternative organisation of security systems. The node is completely virtualized with current virtualization systems so that the operating system with applications and the security system is distinguished. The security system then checks the node from outside and the right security components are provided through a service oriented architecture. Due to the running in a virtual machine, the infected nodes can be halted, duplicated, and moved to other nodes for further analysis and legal aspects. This organisation is in this article analysed and a preliminary implementation showing promising results are discussed.Comment: 4 page

Remote access forensics for VNC and RDP on Windows platform

There has been a greater implementation of remote access technologies in recent years. Many organisations are adapting remote technologies such as Virtual Network Computing (VNC) and remote desktop (RDP) applications as customer support application. They use these applications to remotely configure computers and solve computer and network issues of the client on spot. Therefore, the system administrator or the desktop technician does not have to sit on the client computer physically to solve a computer issue. This increase in adaptation of remote applications is of interest to forensic investigators; this is because illegal activities can be performed over the connection. The research will investigate whether remote protocols and applications do produce and leave valuable artefacts behind on Windows systems. The research aim to determine and retrieve any artefacts left behind remote protocols and applications in a forensic manner. Particular remote applications are selected to perform the research on and initial analysis will be performed on the applications to evaluate the potential forensic artefacts present on the computer system. The research will focus on Windows XP service packs 1, 2 & 3 for analysis of the remote applications and find out what artefacts if any are left behind these systems