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All Journal Bulletin of Electrical Engineering and Informatics Syntax Literate: Jurnal Ilmiah Indonesia ILKOM Jurnal Ilmiah JURNAL PENDIDIKAN TAMBUSAI JURIKOM (Jurnal Riset Komputer) JIPI (Jurnal Ilmiah Penelitian dan Pembelajaran Informatika) Jutisi: Jurnal Ilmiah Teknik Informatika dan Sistem Informasi Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) JATI (Jurnal Mahasiswa Teknik Informatika) Aiti: Jurnal Teknologi Informasi Jurnal Teknik Informatika (JUTIF) Jurnal Pendidikan dan Teknologi Indonesia Jurnal Indonesia : Manajemen Informatika dan Komunikasi IT-Explore: Jurnal Penerapan Teknologi Informasi dan Komunikasi Jurnal Informatika: Jurnal Pengembangan IT Jurnal Pendidikan Teknologi Informasi (JUKANTI) Jurnal Indonesia : Manajemen Informatika dan Komunikasi
Dian Widiyanto Chandra
Universitas Kristen Satya Wacana
Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Social Sciences Other

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Analisis Keamanan DHCP Menggunakan RADIUS Accounting Elisa Stefano Franli Purun; Dian Widiyanto Chandra
Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Vol 9 No 3 (2025): JULI-SEPTEMBER 2025
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jtik.v9i3.3667

Abstract

Every computer needs and must have an IP Address to connect with other computer network users, the IP Address will be automatically distributed to network users using the Router as a DHCP Server. In addition to DHCP, the Router has a DHCP Accounting service that can improve network security with AAA and RADIUS Server features that can be implemented with Freeradius. DHCP Accounting has accounting capabilities for secure START and STOP message transmission, but the flash memory capacity on the C2691 router is around 32 MB, making the DHCP Accounting service not run optimally if it has many users. Using MySQL as a database can be a solution to this problem. When using the DHCP Accounting feature, data from DHCP Accounting will be sent and centralized on Freeradius. Accounting data centralized on Freeradius will be stored using a MySQL database so that the available storage space will be much larger and can accommodate more data from DHCP Accounting, as well as monitoring the network so as to improve network security for users.
Response Time pada Penggunaan AdGuard Home di Container Mikrotik Rizky Bagus Pratama; Dian Widiyanto Chandra
Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) Vol 9 No 3 (2025): JULI-SEPTEMBER 2025
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jtik.v9i3.3810

Abstract

DNS-based ad blocking is used to increase website access efficiency by reducing unnecessary elements. This research analyzes the effect of using AdGuard Home in the MikroTik container on response time, delay and data transfer  when accessing website. This research used an experimental method, with 30 tests before and after the implementation of AdGuard Home. Google DevTools was used to measure response time and data transfer , while Wireshark was used to measure delay. The results show that response time decreased by 36.38% from 78.46 ms to 49.91 ms, and data transfer  decreased by 42.25% from 7.1 MB to 4.1 MB, indicating an increase in network efficiency. However, the delay increased by 12.3% from 256.9 ms to 288.5 ms, due to additional latency in the DNS filtering process. Thus, this research proves that AdGuard Home in the MikroTik container can increase website access efficiency by speeding up response time and reducing data transfer , but increasing delay. Further optimization is needed to reduce the impact of delays to maintain an optimal user experience.
PEMANFAATAN SKRIP ADAPTIF BERBASIS PYTHON DAN SCAPY UNTUK MENYAMARKAN AKTIVITAS PORT SCANNING TERHADAP IDS SURICATA Junior Silambi; Dian Widiyanto Chandra
Jurnal Pendidikan Teknologi Informasi (JUKANTI) Vol 8 No 2 (2025): JURNAL PENDIDIKAN TEKNOLOGI INFORMASI (JUKANTI) EDISI NOPEMBER 2025
Publisher : Universitas Citra Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37792/jukanti.v8i2.1894

Abstract

ABSTRAK Sistem Deteksi Intrusi (IDS) berperan penting dalam mendeteksi aktivitas berbahaya pada jaringan, namun efektivitasnya sering kali terganggu oleh teknik pemindaian yang mampu menyamarkan lalu lintas berbahaya. Penelitian ini mengembangkan skrip pemindaian adaptif berbasis Python dengan pustaka Scapy untuk menguji ketahanan IDS Suricata terhadap aktivitas port scanning. Pengujian dilakukan dalam lingkungan virtual dengan membandingkan pemindaian konvensional menggunakan Nmap dan skrip adaptif yang dikembangkan. Hasil menunjukkan bahwa skrip adaptif memiliki akurasi yang sama dengan Nmap dalam mengidentifikasi port terbuka, namun tidak memicu alert pada Suricata. Temuan ini menunjukkan bahwa pendekatan adaptif sederhana dapat secara efektif menghindari deteksi IDS berbasis signature. Penelitian ini menawarkan pendekatan alternatif yang ringan dan efisien untuk menguji keandalan sistem deteksi intrusi modern.Kata kunci : Keamanan jaringan, Pemindaian adaptif, Pemindaian port, Sistem Deteksi Intrusi, Suricata, Stealth scan. ABSTRACT Intrusion Detection Systems (IDS) are crucial for identifying malicious network activities, yet their effectiveness is often challenged by stealth scanning techniques. This study develops an adaptive port scanning script using Python and the Scapy library to evaluate the resilience of the Suricata IDS against scanning activities. Experiments were conducted in a virtualized environment comparing conventional Nmap scanning and the proposed adaptive script. Results show that the adaptive script achieved equal accuracy in detecting open ports while generating no alerts on Suricata. These findings demonstrate that a simple adaptive approach can effectively evade signature-based IDS detection. This research contributes a lightweight and efficient alternative for testing the robustness of modern intrusion detection systems.Keywords: Network security, Intrusion Detection System, Suricata, Port scanning, Adaptive scanning, Stealth scan.
Co-Authors Abyarake Adiyoga Albert Lionel Auliya, Kharisma Xena Bagas Haryanto Dicky Anggara Sendiyono Elisa Stefano Franli Purun Haryanto, Bagas Joshua, Ivan Junior Silambi Kristoko Dwi Hartomo Laurensius Phillipus Ramawijaya Laurentius Kuncoro Probo Saputra, Laurentius Kuncoro Probo Lilik Husein Efendi Mesakh Herdian Pamungkas Mila Chrismawati Paseleng Odi Pramadika Paulus Miki Resa Gumilang Rahmadyanto, Eko Putra Rhenaldo Delfi Nugraha Rizky Bagus Pratama Rulof Baltwin Tallane Samuel Nugraha Sebastian, Danny Sopaheluwakan, Christian Ronaldo Sri Yulianto Joko Prasetyo Suryasatriya Trihandaru Sutarto Wijono Winarko, Edi Yosefhin Rayaruna Yungka