Linux Administration
Rocky Linux, Ubuntu, services, logs, firewalld, systemd, Bash, package management, and server maintenance.
Linux · Networking · Monitoring · Support
Building real infrastructure, one problem at a time.
I am Stefan, an IT support and infrastructure learner focused on Linux servers, networking, virtualization, monitoring, DNS, SSL, and practical troubleshooting.
Rocky Linux
Nginx
Zabbix
Oracle Cloud
About
Practical IT, not just theory.
My goal is to grow from support work into stronger infrastructure and systems administration skills. I learn best by building: servers, reverse proxies, monitoring, VPNs, DNS, certificates, and small production-like labs.
This website is both a portfolio and a public notebook for the things I configure, break, repair, and understand better over time.
Stack
Tools I work with
Networking
TCP/IP, VLANs, routing, VPNs, DNS, ports, firewalls, troubleshooting, and basic network design.
Monitoring
Zabbix monitoring, hosts, triggers, service checks, alerting, and watching infrastructure behavior over time.
Web Infrastructure
Nginx reverse proxy, Certbot, SSL/TLS, virtual hosts, DNS records, and public-facing Linux services.
Virtualization
VMs, hypervisors, lab networks, snapshots, templates, and separating services into manageable systems.
IT Support
User support, documentation, incident handling, Windows troubleshooting, Active Directory basics, and escalation discipline.
Projects
Homelab and infrastructure work
Live domain
Personal Linux web server
Public portfolio hosted on a Rocky Linux machine with Nginx, DNS records, HTTPS certificates, and a clean deployment flow.
- Domain: stefan.it.com
- Reverse proxy: Nginx
- SSL: Let's Encrypt / Certbot
Monitoring
Zabbix lab
Monitoring environment for servers and services, including troubleshooting database, frontend, and reverse proxy issues.
Network access
WireGuard VPN
Private access into lab resources and remote routing practice using WireGuard and Linux networking.
Infrastructure
Virtual machine lab
Multiple machines for experimenting with Linux, monitoring, web hosting, network services, and recovery scenarios.
Experience
Support background with infrastructure direction.
Help Desk / IT Operations
Technical support, troubleshooting, documentation, user assistance, and exposure to enterprise systems.
IT studies and self-directed lab work
Combining university study with practical Linux, networking, web hosting, and monitoring projects.
Contact
Want to connect?
Best place to reach me professionally is LinkedIn.