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All Journal Jurnal Ilmiah Ecosystem INTEK: Jurnal Penelitian Journal of Information Systems and Informatics Jurnal Teknologi Elekterika EJOIN : Jurnal Pengabdian Masyarakat Journal of Informatics and Computer Engineering Research
Utomo, Muhammad Nur Yasir
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Law, Crime, Criminology & Criminal Justice Public Health Social Sciences

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Journal : Journal of Information Systems and Informatics

 1 
Enhancing Web Performance for E-learning Platform using Content Delivery Network (CDN) and Varnish Cache Utomo, Muhammad Nur Yasir; Tungadi, Eddy; Khartika, Widya
Journal of Information System and Informatics Vol 7 No 1 (2025): March
Publisher : Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51519/journalisi.v7i1.993

Abstract

Along with the development of technology, the web has become a very popular platform for providing information services and digital content, especially in education sector. The popularity of web services such as e-learning is directly proportional to the increasing number of users. The increase in the number of users is often a problem because it can lead to decreased web performance and potential downtime. To overcome this problem, this study proposes Content Delivery Network (CDN) and Varnish Cache as solutions. Web performance evaluation was carried out in a campus internal network using Apache JMeter with a load of 1,000 users. Based on the evaluation, there was a 175.5% increase in throughput, from 51.9 to 142.9 requests per second. In terms of response time, it improved by 54.3%, decreasing from 16,476 ms to 7,526 ms. Additionally, latency was reduced by 82.4%, from 3,555.8 ms to 624.8 ms. The error rate also decreased from 31.4% to 17.2%. These results indicate that CDN implementation can effectively improve web server performance and provide an optimal user experience, especially under high load conditions.
Enhancing Web Application Security with Open-AppSec WAF on CDN Infrastructure Al Imran, Andi Yusdar; Utomo, Muhammad Nur Yasir; Yusri, Iin Karmila
Journal of Information System and Informatics Vol 7 No 3 (2025): September
Publisher : Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51519/journalisi.v7i3.1218

Abstract

The increasing number of cyberattacks targeting web applications has made security a critical concern, with vulnerabilities such as SQL Injection, Cross-Site Scripting (XSS), Broken Authentication, and Cross-Site Request Forgery (CSRF) remaining prevalent in the OWASP Top 10. These threats can lead to data breaches, service disruption, and reputational damage if not properly mitigated. To address this issue, an infrastructure combining Open-AppSec Web Application Firewall (WAF) and Varnish Cache Content Delivery Network (CDN) was implemented on a Moodle-based e-learning platform within a virtualized Proxmox VE environment. Security testing was conducted using OWASP ZAP and Burp Suite under two scenarios: without WAF and with WAF. In the first scenario, OWASP ZAP detected multiple vulnerabilities, and Burp Suite confirmed successful exploitation with 200 OK responses. In the second scenario, all vulnerabilities were eliminated, and all simulated attacks returned 403 Forbidden responses, indicating complete mitigation. Performance tests revealed a manageable overhead, with throughput reaching 115.4 req/sec at 1000 concurrent users, accompanied by a slight increase in response time and latency. These results demonstrate that integrating Open-AppSec with CDN infrastructure can effectively protect against application-layer attacks while maintaining optimal content delivery performance. Limitations of this study include testing within a simulated environment; therefore, future work could validate these findings on larger-scale systems and with real-world traffic to assess broader generalizability.
Co-Authors Abdul Rahman Al Imran, Andi Yusdar BASTIAN, ALVIAN Fansab, Nur Ayu Farahgta Indrabulan, Tantri Khartika, Widya Mochammad Imron Awalludin Muh. Fajri Raharjo Nuzul1, Andi Muhammad Ramadhani, Ainun Zulkiah Rini Nur, Rini Syam, Muh. Fadhil TUNGADI, EDDY Violita, Fajrin Winursito, Anggun Yusri, Iin Karmila