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A Network Engineer and aspiring Cybersecurity Specialist with hands-on experience in routing, switching, and basic penetration testing. Still growing, but driven by curiosity and a strong passion to learn.
Hello, I'm
ADELWIN NL
Network Engineer and Aspiring Cybersecurity Specialist — still growing, but driven by curiosity and a strong passion to learn. Focused on TCP/IP, switching, routing, and basic penetration testing.
Technical Arsenal
Featured Work
Built a responsive Pomodoro Timer website with focus, short break, and long break presets to help improve study and work efficiency.
Developed a personal Link in Bio website (similar to Linktree) using HTML/CSS/JS, allowing centralized access to social media and project links.
Developing Python scripts for automating the initial configuration of Cisco routers and switches, reducing manual setup time significantly.
Career Timeline
- Network Security: Palo Alto Firewall, Cloudflare
- Endpoint Security: CrowdStrike, Tanium, Microsoft Intune
- Privileged Access Management: Senhasegura (PAM)
- Infrastructure Monitoring & Security Operations
- Contributed to managing and growing the IT Enthusiast Community (ITEC)
- Wrote and published educational tech-related articles on the community blog: it-enthusiast-community | blog
- Designed visual content for social media (Instagram) to increase community engagement and visibility
- Delivered and contributed to educational materials related to IT topics
- Supported community operations, including content planning and activity coordination
- Invited as guest trainer by a lecturer who is a partner of CV. Bestpath Network
- Delivered a full-day networking session to university students
- Topics covered: IP & MAC Addressing, Switching, and Routing
- Performed staging and configuration of Firewall, Core Switch & Distribution Switches (DSW 1–5)
- Configured Wireless LAN Controller (WLC), added VLANs, trunk, and SSID (WPA2PSK + Captive Portal)
- Set up LACP on Core Switch & Firewall, NAT policy, DHCP, and remote SSH access
- Deployed and configured Access Points, NMS installation, and Create Captive Portal
- Performed connectivity & DHCP testing to ensure all users could access the internet post-deployment
- Assisted in network migration from existing to new devices and completed LLD documentation
- Co-delivered HPE Aruba Networking Campus Access Professional (HPE7-A01) training
- Covered advanced topics: VXLAN, GBP, Building Wired Infrastructure & Monitoring
- Assisted participants in hands-on lab sessions and technical Q&A
- Verified device readiness for Segment Routing IPv6 (SRv6) implementation
- Developed IPv6 and SRv6 Locator formulas for network planning
- Performed topology mapping for every node currently in use
- Mapped existing service names including L3VPN and L2VPN
- Co-delivered Aruba Certified Associate Switching training for Indosat engineers
- Covered VLANs, Spanning-Tree Protocol, Link Aggregation, VRRP & OSPFv2
- Supported hands-on routing & switching lab exercises
- Co-delivered Aruba Certified Associate Campus Access training for Indosat engineers
- Covered AOS-CX Switching, Network Redundancy, VSF & WLAN Fundamentals
- Guided participants through practical lab configurations
- Helped with documentation during network device configuration and installation (router & switch)
- Checked network topology and supported device staging
- Joined on-site implementation and learned directly from senior engineers
- Monitored network traffic to ensure smooth data flow and connection after deployment
- Basic computer networking Bootcamp trainer at Best-Path Academy
- Aruba Assistant Trainer for networking courses
- Supported internal projects including traffic monitoring and troubleshooting
- Configured Cisco and Mikrotik devices in CV Best-Path Solutions
- Conducted online bootcamps with Introduction to CyberSecurity material
- Created a cashier application web program
- Configured a virtual IP phone using Asterisk
- Configured proxy devices (hotspot creation, site blocking, etc.)
- Developed soft skills and professional communication
- Learned and practiced digital marketing directly
- Learned Linux Operating System fundamentals
- Learned web programming (HTML, CSS, jQuery)
- Completed Cisco Networking Essentials Training
Credentials & Certs
Latest Writings
An introduction to the fundamentals of cybersecurity, explaining key concepts, common digital threats, and practical steps to build a strong security foundation in the modern digital era.
Learn how to identify and exploit SQLi vulnerabilities using manual methods and SQLmap, featuring a practical walkthrough on the testphp.vulnweb.com lab.
Basic discussion of computer networks — covering fundamental concepts needed to understand CCNA 200-301 material from the ground up.
Explains essential Linux commands such as pwd, cd, ls, rm, and others — a practical guide for beginners getting started with Linux.
A guide to understanding file permissions in Linux covering read, write, and execute access, as well as ownership management using chmod and chown commands.
