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All Journal International Journal of Electrical and Computer Engineering Semantik Jurnal Buana Informatika Sistemasi: Jurnal Sistem Informasi Sinkron : Jurnal dan Penelitian Teknik Informatika Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) SemanTIK : Teknik Informasi JURNAL MEDIA INFORMATIKA BUDIDARMA Jurnal Sains dan Informatika JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Technomedia Journal Jiko (Jurnal Informatika dan komputer) Indonesian Journal of Computing and Modeling International Journal of Natural Science and Engineering JURTEKSI Jurnal Informatika JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) JUSIM (Jurnal Sistem Informasi Musirawas) Building of Informatics, Technology and Science Progresif: Jurnal Ilmiah Komputer Journal of Information Systems and Informatics Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Aiti: Jurnal Teknologi Informasi MEANS (Media Informasi Analisa dan Sistem) Jurnal Teknik Informatika (JUTIF) Journal of Information Technology Ampera Edutik : Jurnal Pendidikan Teknologi Informasi dan Komunikasi International Journal Software Engineering and Computer Science (IJSECS) INOVTEK Polbeng - Seri Informatika
Indrastanti Ratna Widiasari
Universitas Kristen Satya Wacana
Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Engineering Languange, Linguistic, Communication & Media Mathematics Other

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Implementasi Proxy dan Snort Sebagai Gateway Antivirus Sebayang, Andreas; Widiasari, Indrastanti Ratna
MEANS (Media Informasi Analisa dan Sistem) Volume 6 Nomor 1
Publisher : LPPM UNIKA Santo Thomas Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (781.27 KB) | DOI: 10.54367/means.v6i1.1232

Abstract

Technology and internet networks are two things that are always related, because in today's era the internet has become a much-needed medium for learning, communicating, exchanging data, and even playing. With the activity of using the internet network, a problem will arise, namely network security. Network security is a very important aspect as a defense in a network, to minimize the risk of data theft and unwanted access in an internet network. The purpose of this study is to implement the control and security of internet use in an agency with minimal costs. namely using the Linux operating system Ubuntu Server 18.04, Proxy Server, and Snort. The result of the system that has been created has a function to perform caching so that it can save bandwidth and can function as filtering content to minimize unwanted things on the network. In addition, the system created is very helpful for network admins to monitor the network in real-time, even can also enforce rules to protect the network.
PERFORMANCE TESTING OF ACADEMIC WEBSITE USING LOAD TESTING METHOD SUPPORTED BY APACHE JMETERTM AT XYZ UNIVERSITY Raweyai, Soni Sampari; Widiasari, Indrastanti Ratna
Jurnal Teknik Informatika (Jutif) Vol. 5 No. 3 (2024): JUTIF Volume 5, Number 3, June 2024
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2024.5.3.1796

Abstract

This study aims to evaluate the performance quality of the academic website of University XYZ through load testing using the Load Testing Method supported by Apache JMeterTM. The main issue addressed is how the website's performance can be measured and assessed in the context of normal, peak, and stress usage. The research methodology involves a qualitative approach to understand the meaning, interpretation, and context of the phenomenon, coupled with a quantitative approach to measure, analyze, and organize data in numerical or statistical forms. The research findings indicate that in the basic testing scenario, the website successfully met the test criteria with an average response time of approximately 0.855 seconds for GET requests, below the established maximum limit. POST requests required an average time of around 0.273 seconds with no response failures. In the peak testing scenario simulating high traffic conditions, the website remained optimal with average response times for both GET and POST requests below the 3-second limit, without response failures. Stress testing scenarios demonstrated the efficient operation of the website, even though the average response time for GET requests increased to approximately 2.564 seconds.The test results affirm that the University XYZ website functions well under various service usage conditions, including heavy loads. The overall average response time for GET requests across all scenarios is approximately 1.558 seconds, while POST requests have an average response time of around 0.355 seconds. Special attention is given to the impact of the number of threads or users and the number of students on the website's performance.
Perancangan Aplikasi Obyek Wisata Berbasis Mobile di Likupang Minahasa Utara Najoan, Patrick; Widiasari, Indrastanti
Edutik : Jurnal Pendidikan Teknologi Informasi dan Komunikasi Vol. 4 No. 1 (2024): EduTIK : Februari 2024
Publisher : Jurusan PTIK Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/edutik.v4i1.9401

Abstract

ABSTRAK Penelitian ini bertujuan untuk merancang aplikasi mobile yang menyediakan panduan komprehensif tentang destinasi wisata di Likupang, Minahasa Utara, yang telah diakui sebagai salah satu dari lima destinasi super prioritas di Indonesia oleh Kementerian Pariwisata dan Ekonomi Kreatif. Aplikasi ini bertujuan untuk memberikan informasi akurat dan berguna mengenai objek wisata teratas di Likupang, termasuk ulasan, peringkat pengunjung, dan navigasi terintegrasi melalui peta interaktif yang terhubung dengan Google Maps. Penelitian ini menggunakan metode waterfall yang meliputi tahap analisis kebutuhan, perancangan, implementasi, dan pengujian. Hasil penelitian menunjukkan bahwa aplikasi yang dirancang mampu memberikan kemudahan bagi wisatawan dalam merencanakan perjalanan mereka, meningkatkan pengalaman wisata, serta berpotensi memberikan dampak positif bagi perekonomian lokal dan kelestarian lingkungan. Kajian terhadap penelitian terdahulu menunjukkan pentingnya penggunaan teknologi digital dalam memaksimalkan potensi pariwisata dan mengoptimalkan pengalaman pengguna. Hasil penelitian menunjukan bahwa pengguna menyatakan puas terhadap aplikasi “Manjo ke Likupang” dengan skor skala likert sebesar 4.01. Penelitian ini membuktikan bahwa masyarakat Indonesia membutuhkan aplikasi untuk melihat rating destinasi wisata yang ingin dituju. ABSTRACT This study aims to design a mobile application that provides a comprehensive guide to tourist destinations in Likupang, North Minahasa, which has been recognized as one of the five super-priority destinations in Indonesia by the Ministry of Tourism and Creative Economy. The application aims to provide accurate and useful information about the top tourist attractions in Likupang, including reviews, visitor ratings, and integrated navigation through interactive maps connected to Google Maps. This study employs the waterfall method, which includes the stages of requirement analysis, design, implementation, and testing. The results indicate that the designed application can facilitate tourists in planning their trips, enhance their travel experience, and potentially have a positive impact on the local economy and environmental sustainability. A review of previous studies highlights the importance of digital technology in maximizing tourism potential and optimizing user experience. The study's findings show that users are satisfied with the "Manjo ke Likupang" application, with a Likert scale score of 4.01. This research demonstrates that Indonesians need an application to view ratings of the tourist destinations they intend to visit.
IOT BASED SMART HOME SIMULATION (INTERNET OF THINGS) Ardianto, Yeheskiel Hency; Widiasari, Indrastanti Ratna
JURTEKSI (jurnal Teknologi dan Sistem Informasi) Vol. 10 No. 4 (2024): September 2024
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) STMIK Royal Kisaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33330/jurteksi.v10i4.3361

Abstract

Abstract: The development of Internet of Things (IoT) technology has significantly impacted life, particularly in creating more efficient and secure smart homes. Smart homes integrate various electronic devices to enhance comfort and energy efficiency. However, cost, integration complexity, and security issues remain. This study will simulate an IoT-based smart home system to analyse and evaluate device performance before real-world implementation. The simulation method involves testing connectivity and evaluating delay and packet loss using the ping method on each device. Results show the highest delay on CCTV devices at 41.8 ms and the lowest on motion detector 2 at 32.8 ms, with 0% packet loss. According to TIPHON standards, the network is rated excellent with an index of 4. The designed smart home system demonstrates optimal performance and is feasible for implementation but requires further development in configuration using AI and machine learning technologies.            Keywords: internet of things; simulation; smart home; testing  Abstrak: Perkembangan teknologi Internet of Things (IoT) telah membawa perubahan signifikan dalam kehidupan, terutama dalam pengembangan rumah pintar (smart home) yang lebih efisien dan aman. Smart home mengintegrasikan berbagai perangkat elektronik untuk meningkatkan kenyamanan dan efisiensi energi. Meskipun demikian, tantangan seperti biaya, kompleksitas integrasi, dan isu keamanan masih ada. Penelitian ini bertujuan untuk mensimulasikan sistem smart home berbasis IoT guna menganalisis dan mengevaluasi kinerja perangkat sebelum implementasi nyata. Metode simulasi yang digunakan melibatkan pengujian konektivitas dan evaluasi delay serta packet loss dengan metode ping pada setiap perangkat. Hasil menunjukkan delay tertinggi pada perangkat CCTV sebesar 41.8 ms dan terendah pada motion detector 2 sebesar 32.8 ms, dengan packet loss 0%. Berdasarkan standar TIPHON, jaringan dinilai sangat baik dengan indeks 4. Sistem smart home yang dirancang menunjukkan kinerja optimal dan layak diimplementasikan, namun masih memerlukan pengembangan lebih lanjut dalam konfigurasi menggunakan teknologi AI dan machine learning.  Keywords: internet of things; pengujian; simulasi; smart home
The Use of PFSense and Suricata as a Network Security Attack Detection and Prevention Tool on Web servers Sufardy, Devander Benaryanta; Widiasari, Indrastanti Ratna
INOVTEK Polbeng - Seri Informatika Vol. 9 No. 2 (2024): November
Publisher : P3M Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/shxy2045

Abstract

This research explores the effectiveness of PFSense and Suricata integration in detecting and preventing network security attacks on web servers. The experimental method was conducted by testing the performance of these two open-source tools in the face of four types of attacks: Ping of Death, SYN Flood, SQL Injection, and Brute Force Attack on SSH. The tests were conducted in an environment with hardware specifications such as [specify specifications, e.g. CPU, RAM, and device type], and software including [specify operating system and version of PFSense and Suricata]. The results showed that Suricata was able to detect threats with an accuracy rate of 92% and successfully blocked 85% of the attacks. The average response time of the system to detect attacks was 250 ms. The integration between PFSense and Suricata proved effective in identifying attack patterns and preventing further potential damage. With proper configuration, this combination not only keeps the web server network secure, but also provides a quick response to complex cyber threats. This research contributes to the development of more reliable network security solutions by demonstrating how the integration of PFSense and Suricata can be effectively used to protect web servers. The findings provide practical guidance for practitioners and academics in implementing more innovative approaches to enhance network security in the digital era.
Implementation of an IoT Based Billing System to Optimize Management of Billiard Table Usage Rezky Kristian Bangun; Indrastanti Ratna Widiasari
INOVTEK Polbeng - Seri Informatika Vol. 9 No. 2 (2024): November
Publisher : P3M Politeknik Negeri Bengkalis

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35314/v0kqfm37

Abstract

This research develops an IoT-based billing system for managing billiard table usage, aimed at addressing various issues arising from the use of manual systems. Currently, many billiard table rental businesses still rely on manual methods for transaction recording and lamp control, which increases the risk of rate manipulation, inaccurate transaction reports, and inefficient resource management. The manual process also adds to the workload of operators, especially when billiard tables are located far apart. The developed system utilizes Bluetooth sensors and a web app to automatically control the billiard table lamps, thereby reducing manipulation and improving operational efficiency. Testing shows that the system accurately calculates the usage fees and controls the lamp status based on commands from the web server. As a result, the system not only enhances the accuracy of cost calculation and the reliability of billiard table management but also provides a better user experience. Thus, the implementation of this IoT-based billing system offers significant benefits in optimizing billiard center management.
Optimizing a Hybrid Deep Learning Model for DDoS Detection Using DBSCAN and PSO Widiasari, Indrastanti Ratna; Efendi, Rissal
Jurnal RESTI (Rekayasa Sistem dan Teknologi Informasi) Vol 9 No 6 (2025): December 2025
Publisher : Ikatan Ahli Informatika Indonesia (IAII)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29207/resti.v9i6.6383

Abstract

This study proposes a hybrid deep learning approach that combines Gated Recurrent Units (GRUs) and Convolutional Neural Networks (CNNs) for Distributed Denial of Service (DDoS) cyberattack detection. The model, called DBSCAN–GRU–CNN, uses density-based clustering (DBSCAN) to select relevant features and reduce execution time. The dataset for this study was obtained from live penetration testing, where a series of simulated attacks was performed on a monitored network. To evaluate the performance of the proposed model, several comparison models were used, including DBSCAN–GRU–CNN (Single Hidden Layer), DBSCAN–GRU–CNN (Double Hidden Layers), DBSCAN–GRU–CNN (With Regularization), DBSCAN–GRU–CNN–PSO, GRU–CNN, GRU–CNN (With Hyperparameter Tuning), and Random Forest (Tuned Model). Variations of the model tested were made by adding hidden layers, regularization, optimization with Particle Swarm Optimization (PSO), and hyperparameter tuning. Experimental results show that the DBSCAN–GRU–CNN–PSO model provided optimal performance with a 99.3% accuracy, a 99% precision, a 98.9% recall, and a 99% F1-score, while the model with hyperparameter tuning achieved a 99% accuracy. By adding PSO, the model achieved optimized weights, better generalization, and excellent accuracy in DDoS detection.
Penerapan Knowledge Sistem Informasi Penjaminan Mutu Fakultas Berbasis Web Di FTI-UKSW Christopher, William; Widiasari, Indrastanti Ratna
Journal of Information System and Informatics Vol 3 No 1 (2021): Journal of Information Systems and Informatics
Publisher : Asosiasi Doktor Sistem Informasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33557/journalisi.v3i1.86

Abstract

Information technology is one of the assets of a company or organization that is important for its development, with the rapid development of technology today, technology must always be updated. One of the roles of information technology is the application of knowledge management. Knowledge Management is a system that is able to improve and manage knowledge information in companies or agencies that apply knowledge management. In this study, it focuses on implementing a knowledge management system in the Quality Assurance of the Faculties at Satya Wacana Christian University. This research is based on the fact that PMF institutions still use manual methods in data archiving, the purpose of this study is to design a web application that is useful for archiving PMF data to make it more effective and efficient. In this study, the KMS (Knowledge Management System) is applied, and uses the Knowledge Management System Life Cycle method which consists of several process stages consisting of infrastructure evaluation, KMS design analysis and development, and evaluation at the final stage. The result of this research is a useful data archiving web application for PMF. It is hoped that PMF will be more efficient in data archiving.
IMPLEMENTASI JARINGAN RT/RW NET DI WILAYAH RT 01 PERUMAHAN SRATEN PERMAI DENGAN METODE NETWORK DEVELOPMENT LIVE CYCLE Setiawan, Muhamad Avif; Widiasari, Indrastanti Ratna
JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) Vol 9, No 4 (2024)
Publisher : STKIP PGRI Tulungagung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/jipi.v9i4.5615

Abstract

Penelitian ini membahas tentang penerapan RT RW Net yang digunakan di wilayah RT 01 di Perumahan Sraten Permai dengan menggunakan perangkat mikrotik. Sulitnya mendapatkan jaringan internet dan juga membutuhkan biaya yang cukup mahal, penelitian ini dimaksudkan untuk membantu masyarakat mendapatkan internet yang murah dan mudah. Metode penelitian yang digunakan untuk penelitian ini adalah menggunakan Network Development Live Cycle (NDLC). Penggunaan mikrotik untuk RT RW Net ini juga memudahkan untuk mengkonfigurasi jaringan internet yang akan dibangun. Dalam perencanaan dalam membangun jaringan internet dilakukan juga untuk melakukan limit bandwidth agar masing masing client mendapatkan akses jaringan internet yang sama agar mendapatkan kecepatan internet yang sama dan juga adil untuk semua.
Design and Implementation of Load Balancing for Quality of Service Improvement Indrastanti Ratna Widiasari; Rissal Efendi
Jurnal Buana Informatika Vol. 15 No. 2 (2024): Jurnal Buana Informatika, Volume 15, Nomor 02, Oktober 2024
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/jbi.v15i2.9530

Abstract

At the Information Technology Faculty, Satya Wacana Christian University, load balancing systems are implemented where the web server serves 500 users. This is to prevent server overload or downtime during simultaneous access to the web server. Test results indicate significant differences in CPU usage, request time, and bandwidth between load balancing and single servers. The use of load balancing is more effective than relying on a single server, as evidenced by test results. The CPU usage with load balancing is significantly lower, with a difference of up to 45% compared to a single server. The request time with load balancing is also slightly better, with only 21.5ms compared to 42ms for a single server. However, the difference in bandwidth between load balancing and a single server is not very significant. The highest bandwidth recorded on a single server is 182kb/s, while with load balancing it reaches 165kb/s.
Co-Authors Aditya Indra Cahya Amanda Angreyni Regal Ardianto, Yeheskiel Hency Arnando, Kelvin Arya Pradana Bagus Pramono Bayu Edhi Setyawan Billy Hamsen Cahyaningrum, Yuliana Cahyaningtyas, Christian Christopher, William Cristianto, Denil Dian W Chandra Eunike Loise Laapen Fra Arsandy Kusuma Sejati Fransiskus Simson Irwan Sembiring Jonathan Liando Kendek Allo, Alvin Kevin Lala, Zefanya Loudewieq Gabriel Maay, Buyung Herfandy Maitimu, Excel Barthel Manuputty, Yandri Y Marpaung, Kristian Vieri Merryana Lestari Najoan, Patrick Nikolaus Toni Prahara, Imanuel Noval Amanda Prasetia, Rega Dhiwastu Rapawuli Eko Putro Raweyai, Soni Sampari Rezky Kristian Bangun Rissal Efendi Rissal Efendi Rissal Efendi Rissal Effendi Riyanto, Muhamad Rizal Dwi Pratomo safry pasau tangdisosang Sebayang, Andreas Setiawan, Muhamad Avif Simarmata, Hotman Samuel Sufardy, Devander Benaryanta Suwijo Danu Prasetyo T. Arie Setiawan Prasida Teguh Wahyono Theopillus J. H. Wellem Theovan Gracia Stefana Putra Ulfa Septilia Permatasari Wibowo, Gading Haryono Wisnu Widi Anggoro Yessica Nataliani Yoel Chandra Eka Paksi Yonatan Surya Kristama