Computer Network Administrators Research Articles

Sertifikasi Profesi Sebagai Strategi Penguatan Kompetensi Dan Scale Up Mitra UMKM Jasa Layanan Internet Studi Kasus Mitra ISP Datanet

This study aims to develop strategies of human quality improvement in internet services by providing training and professional certification especially MikroTik. And also provide guidelines about implementation in professional training and certification that can support the achievement of business scale up in internet services. The result is 19 out of 24 computer network administrators and technicians have successfully passed the certification and have the opportunity to take their competence to the next level.
 And from the results of discussions with trainers, several things that can be done to scale up is increasing the bandwidth gradually according to the turnover of each DataNet partner. Then periodically add access points in new areas that have potential markets. And what is no less important is gradually increasing the competence of computer network administrators and technicians because the level of difficulty and complexity of service is certainly different from before so that service to consumers is also getting better and improving.

PEMANFAATAN KERANGKA KERJA INVESTIGASI FORENSIK JARINGAN UNTUK IDENTIFIKASI SERANGAN JARINGAN MENGGUNAKAN SISTEM DETEKSI INTRUSI (IDS)

One of the media to secure computers is to apply Intrusion Detection System (IDS) technology. IDS is an early detection system in the event of a computer network attack. The IDS will alert the computer network administrator in the event of a computer network attack. IDS also records all attempts and activities aimed at disrupting computer networks and other computer network attacks. The purpose of this study is to implement IDS on network systems and analyze IDS logs to determine the types and types of computer network attacks. Logs on the IDS will be analyzed in depth to be used as an effort to improve computer network security. The research method that will be used is applied research. The research was carried out using the Network Forensic Investigation Framework proposed by Pilli, Joshi and Niyogi. The stages of the Network Forensic Investigation Framework are used to perform network simulations, analysis and investigations to determine the types of computer network attacks. The results show that the Network Forensic Investigation Framework facilitates the investigation process when a network attack occurs. The Network Forensic Investigation Framework is effectively used when the computer network has network security support applications such as IDS or others. IDS is effective in detecting network scanning activities and DOS attacks. IDS provides alerts to administrators because there are activities that violate the rules on the IDS.

Signal performance optimization in the local area network trafic management in the DRC : Models for transmission networks

The high availability of computer networks is a prerequisite in large companies and service providers. Thus, computer network administrators are called upon to face the various growing challenges related to unscheduled downtime of services; lack of expertise; lack of tools; the complexity of technologies; market consolidation and competition to provide better quality services. It should be remembered that the organization of the networks of telecommunication aims at giving control of the phenomena which occur there, during the treatment of the communications, and more generally of the services which they offer. These phenomena are governed by the randomness of the appearance of the requests, and are studied independently of the choices of technology implemented. They are amenable to the formalism of the calculation of probabilities, and give birth to the notion of traffic, which will play a central role in their apprehension, given that they condition for a large part the effective structure of modern networks. This research specifically examines the problems of optimization of signal performance in traffic management of local area networks of companies in the Democratic Republic of Congo, by presenting the different elements of network traffic theory and quality. Thus demonstrating their impact on the architectures of networks and computer systems, and at the same time introducing the major problems faced by IT network administrators on a daily basis; The main objective of this research is to evaluate the development performance of computer and telecommunications networks according to their applications in the areas of network design, equipment dimensioning, and characterization and quality measurement. Service, and network planning techniques.

Sistem Penentuan Konsentrasi Jurusan Bagi Mahasiswa Informatika Menggunakan Metode K-Means Di Institut Asia Malang

Specialization in the concentration of a major is a student's focus on a particular field of study according to his interests. The purpose of specialization is to focus students more on the knowledge gained from previous courses so that they can be more focused. In the Informatics Engineering study program at the Institute of Asia Malang, there are 3 concentrations, namely: Intelligent Systems; Multimedia and Games and, Computer Network Administration. The absence of a system that helps students choose the concentration of majors is quite difficult for students to know their academic abilities. By looking at these problems, this study aims to build a decision-making system in choosing the concentration of majors using the K-Means Clustering method. Where the data value of semester 1 to semester 4 students is used as a variable in the calculation of the k-means clustering method which is implemented using the PHP and MySQL programming languages. Based on the test results, it was found that in cluster 1 there were 3 students who entered the intelligent system concentration. In the second cluster, there are 20 students who are in the Multimedia and Game concentration, in the third cluster there are 56 students who are in the network concentration.

Pemanfaatan Network Forensic Investigation Framework untuk Mengidentifikasi Serangan Jaringan Melalui Intrusion Detection System (IDS)

Intrusion Detection System (IDS) is one of the technology to ensure the security of computers. IDS is an early detection system in the event of a computer network attack. The IDS will alert the computer network administrator in the event of a computer network attack. IDS also records all attempts and activities aimed at disrupting computer networks and other computer network attacks. The purpose of this study is to implement IDS on network systems and analyze IDS logs to determine the different types of computer network attacks. Logs on the IDS will be analyzed and will be used as leverage to improve computer network security. The research was carried out using the Network Forensic Investigation Framework proposed by Pilli, Joshi, and Niyogi. The stages of the Network Forensic Investigation Framework are used to perform network simulations, analysis, and investigations to determine the types of computer network attacks. The results show that the Network Forensic Investigation Framework facilitates the investigation process when a network attack occurs. The Network Forensic Investigation Framework is effectively used when the computer network has network security support applications such as IDS or others. IDS is effective in detecting network scanning activities and DOS attacks. IDS gives alerts to administrators because there are activities that violate the rules on the IDS.

ADMINISTRATION AND MONITORING OF COMPUTER NETWORKS AS A METHOD OF SOLVING MODERN PROBLEMS IN FINANCIAL SYSTEMS

The article defines the role of administration and monitoring of computer networks in financial systems. The main objectives of monitoring are network activities. Research analysis and task setting are to monitor traffic as an important source of information for effective network management, bringing the main functions of network administrators in financial systems. The effectiveness of monitoring using network traffic analyzers depends on the topology of the network under study, its configuration, and the set of devices from which the network is built. The result of the study in the form of two main needs is monitoring and analysis. Effective network management in the field of finance and banking systems, as well as continuous improvement of software in financial systems. What are the requirements for software agent technology? The main functions and tasks of network administration - a description of monitoring, its tools and network analysis, which are divided into certain classes: protocol analyzers (Protocolanalyzers), system management tools (System Management), network management systems (Network Management Systems), built diagnostic and management systems (Embedded Systems), multifunctional devices for analysis and diagnostics, equipment for diagnostics and certification of cable systems, expert systems. The main functions of monitoring and analysis of network activity in financial systems are in the form of 4 items: performance analysis, network accounting, security management, error handling. The main aspects for the development of software for monitoring network activity, the needs that arise during the work with the network, the peculiarities of the administration of these networks, analyzed the existing software for monitoring network activity in financial systems. An example of the use of software for the administration and monitoring of computer networks is a description of the capabilities and highlighting the advantages and disadvantages of these programs in financial systems. This article discusses the following software: Total Network Monitor 2, Observium, Network Olympus, Zabbix.

Evaluation of the efficiency of teaching future informatics teachers in computer networks based on modeling of networks.

When organizing training in computer networks on real equipment, educational institutions face organizational, technical and material difficulties. Using network modeling, the above difficulties can be avoided in teaching future informatics teachers about computer networks. The aim of the research was to prove the effectiveness of teaching future informatics teachers to computer networks based on network modeling. The method of theoretical analysis is carried out in order to comprehensively study the state of the problem under consideration. A pedagogical experiment has been conducted for evaluating the efficiency of teaching computer networks based on modeling. The study has been organized in experimental and control groups. Mathematical statistics were used for the analysis. In the course of the study, it was found that the development and implementation of the proposed teaching methodology provides an opportunity for full and high-quality training of future informatics teachers in the field of computer networks, which allows them to solve professional problems in the design, maintenance, configuration and administration of computer networks.
 Keywords: programming environment; informatics teacher; network technologies; teaching methods; informatization.

Evolution and Utilization of School Sports Computerized Administration System

Computer network is used more and more frequently, but not much in the use of school physical education teaching, for the evolution of school physical education, for the use of computer network administration system in physical education, this paper analyzes and studies the physical education and computer network management, etc.

Tecnología de red definida por software para el aprendizaje en grupos de investigación y educación

Software Defined Network (SDN) is an emerging and programmable network paradigm that changes the way networks are designed and managed by introducing an abstraction that decouples control from the data plane. This technology has generated great interest in both industry and academia. SDN aims to simplify network management while allowing students, teachers, and researchers to experiment with protocols on networks that are used on a daily basis. In addition, it has led to the emergence of new trends in educational systems, especially the university sector, in computer systems and network administration. Due to the little diffusion of the SDN and the high projection that this technology currently has, it is essential that the university educational entities are those that dabble in this issue. That is why this essay is a synthesis that addresses the importance of applying SDN for educational purposes and in the context of academic research groups.

Formation of communication and teamwork skills of future IT-specialists using project technology

The subject of the study is the formation of communication and teamwork skills of future IT-specialists, using project technology in teaching the administration of computer systems and networks. Content analysis of research has shown that communication and teamwork skills are the most requested and necessary soft skills for future IT professionals. It is offered to use project technology of training for their formation. This technology consists of the approaches and tools application used in real-world software development. To implement this technology, we propose to use mind maps for design. The organization of the working process on the project is implemented in Jira Software, Asana or Trello. Communication among project participants should be implemented with the help of several means: video chats (Zoom, Skype, Google Meet) and written communication in corporate messengers (Slack, Zulip). Experimental verification has shown the efficiency of the proposed design technology implementation.

Genetic algorithm for intrusion detection system in computer network

<span>Internet connection nowadays has become one of the essential requirements to execute our daily activities effectively. Among the major applications of wide Internet connections is local area network (LAN) which connects all internet-enabled devices in a small-scale area such as office building, computer lab etc. This connection will allow legit user to access the resources of the network anywhere as long as authorization is acquired. However, this might be seen as opportunities for some people to illegally access the network. Hence, the occurrence of network hacking and privacy breach. Therefore, it is very vital for a computer network administrator to install a very protective and effective method to detect any network intrusion and, secondly to protect the network from illegal access that can compromise the security of the resources in the network. These resources include sensitive and confidential information that could jeopardise someone’s life or sovereignty of a country if manipulated by wrong hands. In Network Intrusion Detection System (NIDS) framework, apart from detecting unauthorized access, it is equally important to recognize the type of intrusions in order for the necessary precautions and preventive measures to take place. This paper presents the application of Genetic Algorithm (GA) and its steps in performing intrusion detection process. Standard benchmark dataset known as KDD’99 cup was utilized with forty-one distinctive features representing the identity of network connections. Results presented demonstrate the effectiveness of the proposed method and warrant good research focus as it promises exciting discovery in solving similar-patent of problems. </span>

A probability distribution function for investigating node infection and removal times

AbstractConsidering the important issue of computer infections by worms spread via networks, the theme of source identification has been a prominent research field that aims at investigating infection propagation including acquiring knowledge about the infection and the node removal times when a worm infection happens. This information helps in identifying the patient zero in the worm attack and may be used by computer forensic investigators and network administrators to spot the culprits and to identify related network vulnerabilities. In this paper, we tackle this problem by developing new probabilistic models based on Bayesian networks. We learn a probability distribution to calculate, at every time step, the probability that each node is infected by a scanning worm, using historical data and features extracted from the network and application layers. With the mentioned probability distribution, the node infection status can be inferred using feature values at each time step. We propose a four‐step method to investigate the time of infection and removal of each node probabilistically. First, features are extracted and derived from network traffic data. There are no suitable training and test datasets publicly available for our tests; therefore, we developed the training and test datasets using simulations of the Code Red II worm. Second, a prior model is built using training data. Third, the probabilistic model is built by the estimation of distribution algorithm. Fourth, the infection probability of nodes is inferred given the probability distribution and feature values at each time step. It has already been shown that the number of infectious nodes can be probabilistically approximated backward in time through the stochastic Back‐to‐Origin Markov model. We combine our first model with the prior stochastic Back‐to‐Origin Markov model to develop our second model. To evaluate our first and second models, we conducted experiments that show that these models can pinpoint the source node and the infection time of nodes with acceptable accuracy. It should be noted that our method could be employed with other propagating worm types including ransomware worms.

Policy-Compliant Maximum Network Flows

Computer network administrators are often interested in the maximal bandwidth that can be achieved between two nodes in the network, or how many edges can fail before the network gets disconnected. Classic maximum flow algorithms that solve these problems are well-known. However, in practice, network policies are in effect, severely restricting the flow that can actually be set up. These policies are put into place to conform to service level agreements and optimize network throughput, and can have a large impact on the actual routing of the flows. In this work, we model the problem and define a series of progressively more complex conditions and algorithms that calculate increasingly tighter bounds on the policy-compliant maximum flow using regular expressions and finite state automata. To the best of our knowledge, this is the first time that specific conditions are deduced, which characterize how to calculate policy-compliant maximum flows using classic algorithms on an unmodified network.

ВИКОРИСТАННЯ ПОЛЬСЬКОГО ДОСВІДУ ПІДГОТОВКИ ФАХІВЦІВ З ІНФОРМАТИКИ В СИСТЕМІ ПЕДАГОГІЧНОЇ ОСВІТИ УКРАЇНИ

The authors of the article have determined the content basis of specialist in computer science vocational training which was grounded on the functional approach in the research process. In particular, the content of relevant curricula and programs has been analyzed. The curricula of Poland and Ukraine provide a set of disciplines that ensure the formation of the professional competence of a specialist in computer science. Based on the state standard of a specialist in computer science, we have identified the following teacher of informatics competences: information system, operative-informatics, computer networks, competence in the field of programming. We considered their formation through the prism of the disciplines that they form. The curricula for the training of computer science specialists from Poland and Ukraine have been analyzed. We note that the group of disciplines in the humanities and socio-economic training cycle to a lesser degree, as well as the cycle of educational disciplines of professional and practical training, to a greater extent serve as a fundamental basis for the formation of the professional competence of a specialist in informatics. As for the disciplines of the group of professional and practical training, we note that among the disciplines that contribute to the formation and development of teacher of informatics competence, there are subjects that are characteristic for all higher educational institutions, such as: programming (including systemic, object- oriented, WEB-programming), database design, computer network administration, computer architecture, computer networks, computer graphics, operating systems. Therefore, in higher education institutions which train specialists in computer science, the curriculum provides a large number of disciplines, the content of which is aimed at forming the computer science specialists professional competence. On the basis of the comparative analysis of the training of the future computer science specialists in Poland and Ukraine, the authors have made the conclusion that advanced ideas of the Polish experience of training future specialists of informatics could be used in the Ukrainian system of pedagogical education.

Perancangan Hotspot Cerdas Berbasis Mikrotik Router Dan Web Server Mini PC Raspberry PI Pada Laboratorium Prodi sistem Komputer STMIK Asia Malang

Dalam penelitian ini dikembangkan sebuah sistem jaringan komputer berbasis router os dan web server autentifikasi yang ditanamkan dalam sebuah mini PC, proses autentifikasi login user diterapkan pada sebuah sistem hotspot router yang dikombinasikan dengan mini PC sehingga dapat menghasilkan sebuah sistem manajemen yang bagus atau yang dapat disebut sebagai hotspot cerdas. Hotspot cerdas yang dibangun memiliki kemampuan untuk melakukan manajemen dan otentifikasi user.
 Manajemen user yang dibangun dalam sistem hotspot cerdas ini memiliki kemampuan untuk menentukan otoritas user, hirarki limitasi bandwith, serta limitasi terhadap situs serta konten yang dapat diakses oleh user, sistem ini mampu mendeteksi konten-konten atau situs yang mengandung malware, phising, atau pornografi. Kemampuan ini dibuat dengan mengimplementasikan serta memodifikasi fitur firewall dalam mikrotik OS.
 Otentifikasi user dibangun dengan menggabungkan fitur hotspot dalam router OS serta web server yang ditanamkan dalam sebuah mini PC Raspberry PI . Otentifikasi user diterapkan dengan dua kali proses login yaitu proses login pertama dengan memasukkan username dan password dengan tujuan untuk penentuan hak akses user, kemudian proses login kedua berupa pertanyaan yang sesuai dengan kelas user yang diberikan. Pertanyaan yang diberikan berupa soal yang berhubungan dengan mata kuliah prodi Sistem Komputer. Hasil yang diperoleh dari dibangunnya sistem hotspot cerdas ini adalah sistem hotspot yang dapat memberikan edukasi bagi user dan memberi pelayanan kenyamanan lebih bagi user serta media pembelajaran mata kuliah Administrasi Jaringan Komputer di STMIK Asia Malang. Berdasarkan pengujian sistem yang telah dilakukan didapatkan beberapa kelemahan terhadap otentifikasi dan limitasi yang telah dibuat, akan tetapi dari kelemahan tersebut secara garis besar bisa disimpulkan bahwa sistem bisa berjalan cukup baik.

SecSDN-Cloud: Defeating Vulnerable Attacks Through Secure Software-Defined Networks

A software-defined network (SDN) is a technology that supports computer network administrators. However, the centralized control plane architecture of SDNs makes them vulnerable to harmful security threats. In this paper, we propose a secure cloud (SecSDN-cloud) architecture that includes user authentication, routing, attack resistance, and third-party monitoring. The goal of this paper is to design an SDN-cloud environment with integrated security that can resist three different attack types: flow table overloading, control plane saturation, and Byzantine attacks. A novel digital signature with chaotic secure hashing is used for user authentication, followed by an enhanced particle swarm optimization multi-class routing protocol to improve the quality of service. Controllers are assigned to switches by integrating an enhanced genetic algorithm with a modified cuckoo search algorithm. The malicious flow identification includes the analysis of five-tuples constructed from features extracted from packets. We implemented the proposed SecSDN-cloud in the OMNeT++ simulator and evaluated its performance in terms of packet loss, end-to-end delay, throughput, latency, and bandwidth.

PERANCANGAN APLIKASI SISTEM MONITORING JARINGAN REMOTE PC BERBASIS JAVA

Utilization of information technology and computer network as data communication media until now increasing. The need for shared use of resources (Resources) that exist in the network both software and hardware has led to the emergence of various development of network technology itself. The bigger a company or institution that use computer network hence more complex also network system at company or agency, and needed a good handling for system can run optimally The purpose of this Final Project is to design and supervise the condition of computer and also Clientr on network And can handle it. The computer network administrator tasked with organizing and manag`ing the local network requires a lot of information, so that the decisions made lead to the best decision in handling the problems on a network. Therefore,management information on a network system will correctly affect the security of the network. After Implementation of Remote Access System Based on the test of software engineering laboratory obtained convenience Port used in the process of remote monitoring computer network on port 6060. So that it can be Implemented by computer users, in the process of Monitoring Remote Network Computer. Keywords : Remote Komputer, Java, Netbeans, Framework,Unified Modelling Language.

A New Hybrid Network Sniffer Model Based on Pcap Language and Sockets (Pcapsocks)

Nowadays, the protection and the security of data transited within computer networks represent a real challenge for developers of computer applications and network administrators. The Intrusion Detection System and Intrusion Prevention System are the reliable techniques for a Good security. Any detected intrusion is based on data collection. So, the collection of an important and significant traffic on the monitored systems is an interesting feature. Thus, the first task of Intrusion Detection System and Intrusion Prevention System is to collect information’s basis to treat and analyze them, and to make accurate decisions. Network analysis can be used to improve networks performances and their security, but it can also be used for malicious tasks. Our main goal in this article is to design a reliable and powerful network sniffer, called PcapSockS, based on pcap language and sockets, able to intercept traffic in three modes: connected, connectionless and raw mode. We start with the performances assessment performed on a list of most expanded and most recently used network sniffers. The study will be completed by a classification of these sniffers related to computer security objectives based on parameters library (libpcap/winpcap or libnet), filtering, availability, software or hardware, alert and real time. The PcapSockS provides a nice performance integrating reliable sniffing mechanisms that allow a supervision taking into account some low and high-level protocols for TCP and UDP network communications.

Cooperation Methods Using in E-Learning for It Specialists' Competence Development

<p class="Standard"><em>Today the daily life of the population is impossible without technology. As technology is constantly evolving, we need to provide ICT technology, computer networks and computer systems solution implementation, maintenance skills for future IT professionals. To find new ways of ICT professional competence to develop better and better as the professional competence more effective train. The study process main result is to prepare IT professionals with basic ICT competencies and skills that should be motivated and skilled for lifelong learning. Nowadays, still not used sufficiently effective e-learning technology options to achieve a better and more sustainable learning results. This paper describes a issue in which, contrary to traditional study process, students have opportunities to cooperate in a virtual environment using e-learning technologies, enhance your initial results of the work. The study process, using e-learning technology and cooperation methods was improved and developed IT specialists’ competencies and skills, which are important for computer systems and network administrator at work. Consequently, it was held IT competencies improvement, learning from each other.</em></p>

A probe into the administration of the surgery material

Objective To carry out unified regulation to the purchase, using and administration of the surgery material, thus to improve the quality of medical work and the level of medical administration. Methods For the one-shot things, interlink administration was needed. For the precision instrument, we carried out the responsibility system within every specific section office, and the administration with pictures and codes. For the expensive instruments and equipments, we made registration and carry out personal responsibility system. We analyzed the existing problems and expected the computer network administration in the future. Results No surgery was affected because of the shortage of materials or the damage of the instruments or equipments. Conclusions With the efficient administration of the surgery material, we can improve the nursing quality in the operation room, avoid medical disputes, and make sure smooth operation, thus every patient can recover soon. Key words: Surgery; Material; Administration