JOISTECH: Journal of Information System and Technology

Strengthening Security in RT/RW Community Networks: A Case Study on Router Default Configuration Vulnerabilities in Indonesia

2025-12-23T11:56:01+07:00

RT/RW community networks have become an affordable internet solution in Indonesia. However, their implementations frequently rely on routers left in factory-default configurations, creating severe security vulnerabilities. Common weaknesses include unchanged default credentials, outdated firmware, weak Wi-Fi encryption, enabled remote management, and lack of network segmentation—conditions that greatly increase risks of unauthorized access, bandwidth theft, DNS hijacking, and data interception.

This study evaluates router configuration vulnerabilities across five RT/RW Net regions in Indonesia using a case study approach involving direct configuration analysis, operator interviews, and risk assessment based on IEEE 802.11 and NIST SP 800-153 frameworks. Findings reveal that 66% of routers still use default credentials, 54% rely on legacy WEP/WPA encryption, and 80% lack firmware updates. Furthermore, 40% of routers expose administrative ports without additional authentication.

The study proposes a three-tier security framework—basic, intermediate, and advanced protection—to help operators strengthen network resilience. The results contribute to improving community network security practices while providing academic enrichment in the field of micro-community network protection.

IoT-Based Smart Technology Modeling for Darunnajah Islamic Boarding School for Plantation Management

2025-12-23T11:40:09+07:00

Modern plantation management requires an accurate, responsive, and efficient monitoring system to increase
crop productivity. The Internet of Things (IoT) is a potential solution for educational institutions such as the Darunnajah
Islamic Boarding School, which manages plantations as part of its economic independence. This research aims to
develop an IoT technology model based on a layered architecture, encompassing perception, networking, processing,
and application layers tailored to the operational context of Islamic boarding schools. Recent literature data was used to
formulate sensor requirements, communication protocols, edge-cloud mechanisms, and application designs for students
and administrators. The modeling results provide an overview of an IoT implementation that is scalable, energyefficient, and easily replicated. This study is expected to serve as a technical guide for the development of Smart Islamic
Boarding Schools in the plantation sector.

Implementation of a Sound Sensor-Based Automatic Light Switch Using a Wemos D1 R32 Microcontroller in a Classroom

2026-01-20T19:27:42+07:00

The development of Internet of Things (IoT) technology and intelligent control systems has encouraged the
use of microcontroller devices to support energy efficiency and comfort in learning environments. One of the problems
often encountered in classrooms is the use of inefficient lights, such as lights left on even when not in use or late turning
off the lights after learning activities are finished. This study aims to design and implement a sound sensor-based
automatic light switch system using a Wemos D1 R32 microcontroller in a classroom. This system is designed to detect
certain voice commands, such as clapping or sound intensity at a certain threshold, which are then processed by the
microcontroller to control the condition of the lights (on or off). The research method used is Research and
Development (R&D), which includes the stages of needs analysis, system design, hardware and software development,
testing, and system performance evaluation. The sound sensor is used as the main input to detect audio signals from the
environment, while the Wemos D1 R32 functions as a control center that processes data and activates relays as light
switches. The test results show that the system is able to respond to voice commands with a good success rate in
relatively normal classroom environmental conditions. The implementation of this system contributes to increasing the
efficiency of electrical energy use in classrooms and provides convenience for users without having to directly contact
manual switches. Furthermore, this system also supports technology-based learning concepts and can be used as a
practical learning medium for students in electronics and IoT. Therefore, the implementation of a sound sensor-based
automatic light switch using the Wemos D1 R32 is expected to be an innovative solution for managing educational
facilities more intelligently and sustainably

Improving Cuangki Meatballs Micro, Small and Medium Enterprises Using Online Website-Based Digital Technology

2026-01-24T16:19:50+07:00

Micro, Small, and Medium Enterprises (MSMEs) are an economic sector that significantly contributes to national economic growth, particularly in job creation and strengthening local economies. However, the development of digital technology and changes in consumer behavior require MSMEs to adapt to remain competitive. One of the main challenges faced by MSMEs, particularly in the culinary sector, is limitations in marketing, market reach, and customer information management. The Meatballs Cuangki MSME, as part of a traditional culinary business, has significant market potential, but many businesses still rely on conventional marketing methods, making it difficult to compete in the digital era. Therefore, utilizing digital technology based on online websites is a strategic solution to improve the performance and competitiveness of MSMEs. This study aims to analyze the role and impact of implementing digital technology based on online websites on the growth of the Meatballs Cuangki MSME business. The research focuses on the influence of website use on market reach, increased sales, and consumer interaction and trust. This study uses a mixed methods approach, combining quantitative and qualitative methods. Quantitative data was obtained by distributing questionnaires to Meatballs Cuangki MSMEs and consumers who had used the online website service, while qualitative data was collected through in-depth interviews with business owners. Data analysis techniques included descriptive statistics and simple linear regression to measure the relationship between website use and improved business performance, as well as thematic analysis for qualitative data. The results of the study indicate that implementing an online website has a positive and significant impact on improving the performance of Meatballs Cuangki MSMEs. Website use has been proven to expand market reach, increase sales volume, and strengthen interactions between businesses and consumers. The website serves not only as a promotional medium but also as a means of providing product information, online ordering, and integration with digital payment systems. Furthermore, a professional website appearance increases consumer trust in the quality and credibility of the business. However, this study also identified several obstacles in implementing digital technology, including limited digital literacy among business owners, website management costs, and a lack of understanding of website optimization strategies such as SEO and digital analytics.

System Development for Designing, Building, and Maintaining Website Based Building Infrastructure

2026-01-28T10:18:02+07:00

Advances in information technology are driving digital transformation in building infrastructure management,
which was previously carried out conventionally and fragmented. Unintegrated building design, construction, and
maintenance processes often lead to various problems, such as information delays, coordination difficulties between
stakeholders, low operational efficiency, and suboptimal decision-making. This research aims to develop a websitebased system capable of supporting integrated building infrastructure management throughout the building's lifecycle,
from design, construction, and maintenance. The research method used is a Research and Development (R&D)
approach with a System Development Life Cycle (SDLC) approach, encompassing the stages of needs analysis, system
design, implementation, and testing. The system was developed using web technology and designed to provide features
for building data management, design documentation, construction progress monitoring, maintenance recording, and
dashboard-based reporting. System testing was conducted using a black-box method to ensure all functions operate
according to user requirements. The results of the study indicate that the developed website-based system can increase
data management efficiency, improve coordination between relevant parties, and provide accurate and real-time
information to support decision-making. This system also simplifies the documentation and tracking of building
construction and maintenance activities. Thus, the developed system is expected to be an effective digital solution in
supporting the transformation of building infrastructure management and become the basis for further development
towards the smart building concept.