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All Journal Jurnal Simetris Jurnal Sisfokom (Sistem Informasi dan Komputer) Jurnal Informatika Global JUSIM (Jurnal Sistem Informasi Musirawas) Jurnal Komputer, Informasi dan Teknologi Jurnal Abdimastek (Pengabdian Masyarakat Berbasis Teknologi)
Japriadi, Yohanes Setiawan
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Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Library & Information Science

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Implementation of a Network Security System Using the Simple Port Knocking Method on a Mikrotik-Based Router Novianto, Dian; Tommy , Lukas; Japriadi, Yohanes Setiawan
Jurnal Komputer, Informasi dan Teknologi Vol. 1 No. 2 (2021): Desember
Publisher : Penerbit Jurnal Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53697/jkomitek.v1i2.375

Abstract

One of the problems in remote access to the system is the act of hacking to illegally gain access rights to a system. Therefore the need for an additional mechanism in user authentication in addition to the username and password parameters. The port knocking method is an option that can be implemented in this problem. Port knocking is a security system that functions to open or close access to certain ports by using a firewall on network devices by sending certain packets or connections. The connection used can be in the form of TCP, UDP, or ICMP protocols. The network system development method used in this research is the PPDIOO method developed by CISCO, where the cycle sequence includes: . prepare (preparation), Plan (planning), Design (Design), Implement (Implementation), Operate (Operation) and Optimize (Optimization). The result of implementing the Port Knocking method on a system on a computer network is that the system will refuse if the login activity on the system does not or sends additional parameters incorrectly, besides that the network admin can find out the activity on the network system if someone from outside fails when accessing the system through the port. so that actions can be taken according to system security requirements.
KEGIATAN PELATIHAN PENGUATAN MATERI JARINGAN KOMPUTER UNTUK PERSIAPAN UJI KOMPETENSI SISWA SMK N 1 SUNGAILIAT Sujono, Sujono; Japriadi, Yohanes Setiawan; Novianto, Dian; Tommy, Lukas
Jurnal Pengabdian Masyarakat Berbasis Teknologi Vol 4, No 2 (2023): Volume 4, Nomor 2, Oktober 2023
Publisher : ISB Atma Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32736/abdimastek.v4i2.1988

Abstract

Pada SMK N 1 Sungailiat Bangka Belitung mempunyai beberapa program keahlian salah satunya adalah Teknik Komputer dan Jaringan. Tujuan dari program keahlian Teknik Komputer dan Jaringan adalah siswa diharapkan dapat menginstal perangkat komputer, sistem operasi, dan aplikasi yang dibutuhkan untuk instalasi jaringan Local Area Network maupun Wide Area Network. Untuk mengukur kemampuan siswa yang mengambil program keahlian ini yang telah mengikuti menyelesaikan proses pembelajaran diwajibkan mengikuti Uji Kompentensi Keahlian. Untuk menghadapi ujian tersebut, siswa perlu mendapatkan penguatan materi agar dapat menyelesaikan ujian dengan baik. Untuk pelatihan dilaksanakan selama 2 hari diruang Laboratorium Jaringan SMK N 1 Sungailiat dengan menggunakan metode ceramah, demo, dan praktek langsung. Sebelum pelaksanaan pelatihan dilakukan pre test untuk mengukur sampai sejauh mana kemampuan siswa dalam memahami instalasi software dan jaringan selama menempuh pelajaran disekolah. Hasil dari pelatihan ini menunjukan adanya kemajuan pengetahuan siswa dilihat dari hasil pre test siswa rata-rata 65,62 dan hasil dari post test meningkat menjadi rata-tata 87,32. Artinya kemampuan siswa meningkat rata-rata 34,94 persen.
Mitigasi Serangan DNS Cache Poisoning Pada Local Area Network Berbasis Routerboard Mikrotik Novianto, Dian; Tommy, Lukas; Japriadi, Yohanes Setiawan; Sujono
Jurnal Ilmiah Informatika Global Vol. 15 No. 3: Desember 2024
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jiig.v15i3.4816

Abstract

Domain Name System (DNS) enables users to access websites via domain names, offering convenient navigation. However, criminals can exploit this convenience to redirect connections from user devices to fake servers for a variety of purposes. A form of attack known as DNS cache poisoning exploits vulnerabilities in the Domain Name System (DNS) to redirect connections from a legitimate website address to an illegitimate one. As a consequence of the fact that users of networked systems are typically unaware that they are accessing an illegitimate site, this attack can have a particularly damaging impact. Such incidents can give rise to several issues, including the theft of data, the distribution of malware, and other security threats. To address this issue, this study employs a firewall in conjunction with DoH (DNS over HTTPS) and the utilization of registered certificates. The Domain Name System over HTTPS (DoH) protocol encrypts DNS requests and responses, preventing third parties (such as attackers who manipulate DNS) from reading or modifying DNS requests. The data employed in this study is derived from a review of existing literature. Furthermore, this study employs the PPDIOO model (Preparation, Planning, Design, Implementation, Operation, and Optimization) for the development of the network. Furthermore, the Mikrotik RB951ui-2Hnd routerboard is employed in this study. The outcome is the implementation of a multifaceted security strategy that effectively mitigates DNS cache poisoning attacks by 100%, while simultaneously reducing CPU usage to 11.5%. This approach enhances the security and reliability of user search activities on the internet.
Prediction of Claim Fund Reserves in Insurance Companies Using the ARIMA Method Brotosaputro, Goenawan; Japriadi, Yohanes Setiawan; Windihastuty, Wiwin; Ahsani, Rivai
Jurnal Sisfokom (Sistem Informasi dan Komputer) Vol. 14 No. 1 (2025): JANUARY
Publisher : ISB Atma Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Insurance is a financial protection contract between a customer and an insurance company which is stated in the form of an insurance policy. Prediction of insurance claim reserve funds is necessary because the claim amount varies and the claim time can be the same. If at any time there is a claim that is so large that it exceeds the available claim reserve fund plus the claim occurs at the same time, it can cause the company to fail to pay the claim. This will certainly make the company's conduct decline, customer trust will be lost, and can cause the company to go bankrupt. The problem can be solved if the insurance company has sufficient claim fund reserves. Claim fund reserves are an important issue in insurance companies. This study aims to predict the claim fund reserves in insurance companies to anticipate varying claim amounts. Historical analysis of the value of claims with the ARIMA model approach is used to predict future claim values. We use claim value data that has been scaled in millions. 2020 to 2022 as training data and 2023 as test data. The Root Mean Square Error (RMSE) metric obtained is IDR 25,780.71; Mean Absolute Deviation (MAD) of IDR 14,421.89, and Mean Absolute Percentage Error (MAPE) of IDR 5,967.27; while the total actual claim value in 2023 is IDR 161,700.51 and the total predicted claim value is IDR 166,227.36; which means that an accuracy of 97% is obtained. The result of claim prediction value in one periodic year can give a favor to the management to make a decision, how much the claim funds should be prepared.
Prediction of Claim Fund Reserves in Insurance Companies Using the ARIMA Method Brotosaputro, Goenawan; Japriadi, Yohanes Setiawan; Windihastuty, Wiwin; Ahsani, Rivai
Jurnal Sisfokom (Sistem Informasi dan Komputer) Vol. 14 No. 1 (2025): JANUARY
Publisher : ISB Atma Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32736/sisfokom.v14i1.2331

Abstract

Insurance is a financial protection contract between a customer and an insurance company which is stated in the form of an insurance policy. Prediction of insurance claim reserve funds is necessary because the claim amount varies and the claim time can be the same. If at any time there is a claim that is so large that it exceeds the available claim reserve fund plus the claim occurs at the same time, it can cause the company to fail to pay the claim. This will certainly make the company's conduct decline, customer trust will be lost, and can cause the company to go bankrupt. The problem can be solved if the insurance company has sufficient claim fund reserves. Claim fund reserves are an important issue in insurance companies. This study aims to predict the claim fund reserves in insurance companies to anticipate varying claim amounts. Historical analysis of the value of claims with the ARIMA model approach is used to predict future claim values. We use claim value data that has been scaled in millions. 2020 to 2022 as training data and 2023 as test data. The Root Mean Square Error (RMSE) metric obtained is IDR 25,780.71; Mean Absolute Deviation (MAD) of IDR 14,421.89, and Mean Absolute Percentage Error (MAPE) of IDR 5,967.27; while the total actual claim value in 2023 is IDR 161,700.51 and the total predicted claim value is IDR 166,227.36; which means that an accuracy of 97% is obtained. The result of claim prediction value in one periodic year can give a favor to the management to make a decision, how much the claim funds should be prepared.
IMPLEMENTASI VIRTUAL PRIVATE NETWORK MENGGUNAKAN SSTP UNTUK KEAMANAN AKSES KE NETWORK ATTACHED STORAGE SERVER Novianto, Dian; Japriadi, Yohanes Setiawan; Tommy, Lukas; Sujono, Sujono
JUSIM (Jurnal Sistem Informasi Musirawas) Vol 10 No 1 (2025): JUSIM : Jurnal Sistem Informasi Musi Rawas JUNI
Publisher : LPPM UNIVERSITAS BINA INSAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32767/jusim.v10i1.2644

Abstract

Ensuring the integrity of access to Network Attached Storage (NAS) Servers constitutes a significant concern in the context of implementing centralized storage within an organization's business processes. Data leakage problems can arise in the absence of adequate Server access security measures. One solution that can be applied to this problem is the use of a Virtual Private Network (VPN) with the Secure Socket Tunneling Protocol (SSTP) protocol. The SSTP (Secure Sockets Layer/Transport Layer Security) protocol utilizes encryption techniques based on SSL/TLS, thereby enhancing the security of data transmitted over public networks. The system development method employed in this study is PPDIOO, which comprises the preparation, planning, design, implementation, operation, and optimization stages. The present study utilizes TrueNas Core as the software to operate the NAS Server, and MikroTik Routerboard RB951-2HND as the router that will function as a VPN Server. The experimental results demonstrate that SSTP is capable of establishing a secure and encrypted connection, as well as enhancing access control to the NAS. The implementation of SSTP VPN by organizations ensures that only authenticated users can access the NAS, thereby reducing the risk of data leakage and cyberattacks.
SIMULASI DATABASE BEBAN KERJA DOSEN PERGURUAN TINGGI MENGGUNAKAN DIMENSIONAL MODELING Anisah, Anisah; Yurindra, Yurindra; Japriadi, Yohanes Setiawan; Andrika, Yuyi; Pradana, Harizki Arie
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol 11, No 1 (2020): JURNAL SIMETRIS VOLUME 11 NO 1 TAHUN 2020
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (757.72 KB) | DOI: 10.24176/simet.v11i1.3855

Abstract

Data warehouse sudah banyak digunakan untuk membantu eksekutif dalam pengambilan sebuah keputusan, diantaranya bidang kesehatan, bidang perhotelan, dan tidak ketinggalan di bidang pendidikan. Akan tetapi, belum banyak yang menggunakan data warehouse khususnya untuk keperluan Beban Kerja Dosen (BKD). Penelitian sebelumnya ada yang melakukan penelitian mengenai BKD, tetapi sebatas perancangan untuk  database operasional. Beban kerja dosen haruslah dilakukan evaluasi agar dosen yang ada di perguruan tinggi merupakan dosen yang profesional yang senantiasa menjunjung tinggi pelaksanaan Tri Dharma Perguruan Tinggi. Masalah yang dihadapi saat ini, untuk mendukung proses evaluasi beban kerja dosen dan pengambilan keputusan yang tepat oleh para pemangku kepentingan perguruan tinggi tersebut, belum adanya suatu database beban kerja dosen yang terintegrasi dan terpusat yang bisa diakses oleh pemangku kepentingan perguruan tinggi untuk memperoleh informasi stategis mengenai beban kerja dosen suatu perguruan tinggi secara lengkap, cepat dan akurat. Adapun tujuan dari penelitian ini adalah merancang data warehouse yang dapat membantu para pemangku kepentingan perguruan tinggi dalam memperoleh informasi stategis mengenai beban kerja dosen tersebut. Metode penelitian yang digunakan pada tahap analisis dan perancangan data warehouse menggunakan Four Step Methodology kimball. Database yang dihasilkan akan dilakukan simulasi dengan menggunakan interface PhpMyadmin untuk kemudian dilakukan evaluasi mengenai rancangan database yang dihasilkan untuk mengetahui sampai sejauh mana kemampuan database data warehouse beban kerja dosen ini bisa menghasilkan informasi strategis beban kerja dosen yang dibutuhkan oleh perguruan tinggi.
MITIGASI DHCP STARVATION ATTACK PADA ROUTERBOARD MIKROTIK DAN PENGARUHNYA TERHADAP PERFORMANSI Novianto, Dian; Japriadi, Yohanes Setiawan; Tommy, Lukas; Sujono
Jurnal Ilmiah Informatika Global Vol. 15 No. 2: Agustus 2024
Publisher : UNIVERSITAS INDO GLOBAL MANDIRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36982/jiig.v15i2.3930

Abstract

As people become more dependent on information technology, the need for Internet availability increases. Various types of devices are connected to the network, increasing the convenience of using information technology. However, this convenience can often be disrupted by attacks on the network infrastructure, one of which is a DHCP Starvation attack. The Dynamic Host Configuration Protocol (DHCP) is a client-server-based protocol used to automatically assign or obtain IP addresses for client computers or other network devices. Mitigating DHCP Starvation attacks is one form of protection for users. The impact of this attack is that the attacker can become one of the hosts on the network and perform a man-in-the-middle attack, so the impact of information leakage can occur. In addition, it is necessary to know the impact on router resources when a DHCP Starvation attack occurs, so that network managers can calculate how much resources are needed. The author uses a Filtering method based on Mac address es, ARP, and alerts on the Mikrotik router. In addition, the PPDIOO method is also used to develop this system, which consists of preparation, planning, design, Implementation, operation, and optimization. The test results showed that the application of this Filtering method proved to be very effective in preventing DHCP Starvation attacks, and the router board resources were not significantly affected when this Filtering method was applied.
PENGEMBANGAN KEMAMPUAN MAHASISWA WILAYAH BANGKA BELITUNG DALAM MEMBUAT WEBSITE DENGAN WORDPRESS Tommy, Lukas; Novianto, Dian; Japriadi, Yohanes Setiawan; Sujono; Wijaya, Benny; Brotosaputro, Goenawan
Jurnal Pengabdian Masyarakat Berbasis Teknologi Vol 6 No 02 (2025): Volume 6, Nomor 2, Oktober 2025
Publisher : ISB Atma Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Kemampuan membuat website sangat dibutuhkan di industri teknologi untuk profesi front-end, back-end, ataupun full-stack developer. Kemampuan membuat website sebagian mahasiswa Fakultas Teknologi Informasi Bangka Belitung masih kurang baik karena materi yang diajarkan di kelas biasanya hanya berfokus kepada konsep dasar tanpa praktik langsung dalam proyek nyata yang lebih kompleks. Tim Pengabdian kepada Masyarakat akan menyelenggarakan pelatihan membuat website yang memanfaatkan sistem manajemen konten WordPress sebagai alat dalam membuat dan mengelola website agar pengembang tidak perlu memulai dari nol dan memiliki kemampuan pemrograman yang mumpuni. Selain itu, diajarkan juga cara membuat plugin untuk operasi tambah, baca, ubah, dan hapus data serta cara meng-hosting project web di penyedia layanan domain dan hosting gratis. Hasil evaluasi menunjukkan bahwa pelaksanaan pelatihan telah berhasil meningkatkan kemampuan peserta dalam membuat situs web, dengan rata-rata peningkatan kemampuan sebesar 9,73%.
PENDAMPINGAN PENGGUNAAN E-VOTING UNTUK MEMILIH FUNGSIONARIS MAJELIS SINODE XXI GPIB Japriadi, Yohanes Setiawan; Helmud, Ellya; Tommy, Lukas; Novianto, Dian; Thian, Franli Chandra; Aprilia, Cindy
Jurnal Pengabdian Masyarakat Berbasis Teknologi Vol 3 No 1 (2022): Volume 3, Nomor 1, Mei 2022
Publisher : ISB Atma Luhur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32736/abdimastek.v3i1.1379

Abstract

GPIB setiap 5 tahun mengadakan persidangan sinode untuk memilih fungsionaris Majelis Sinode. Pemilihan fungsionaris Majelis Sinode XXI GPIB di tahun 2021 akan dilaksanakan secara daring dikarenakan pandemi Covid-19 dan efisiensi biaya. Sebelum pendampingan ini dilaksanakan, telah dikembangkan sebuah aplikasi e-voting untuk mendukung pelaksanaan pemilihan tersebut. Simulasi penggunaan dari aplikasi tersebut kemudian dilakukan kepada peserta dan panitia pemilihan sebelum pemilihan yang sebenarnya diadakan. Proses pendampingan yang dilakukan meliputi briefing penggunaan aplikasi kepada peserta dan panitia sebelum pemilihan dilakukan dan monitoring saat proses pemilihan berlangsung serta penghapusan data pemilihan setelah pemilihan selesai. Berdasarkan wawancara yang telah dilakukan, diketahui bahwa aplikasi e-voting dapat membuat proses pemilihan menjadi cepat dan meminimalkan biaya yang dikeluarkan serta aman dari resiko penyebaran virus Covid-19. Selain itu, pendampingan yang dilakukan membuat peserta dan panitia pemilihan menjadi lebih terampil dalam menggunakan fitur-fitur yang ada pada aplikasi e-voting sesuai dengan peran masing-masing.
Co-Authors Ahsani, Rivai Anisah Aprilia, Cindy Chrisna Putra, Rendy Rian Dian Novianto Dian Novianto ellya helmud, ellya Goenawan Brotosaputro Lukas Tommy Pradana, Harizki Arie Sujono Sujono Sujono, Sujono Thian, Franli Chandra Tommy , Lukas Wijaya, Benny Windihastuty, Wiwin Yurindra, Yurindra Yuyi Andrika, Yuyi