Welcome to Freorit — I'm Andreas. It all started with a Linux laptop and a self-built pfSense router. What began as a hobby turned into years of hands-on projects in my own homelab, diving deeper into the fascinating world of self-hosting and IT security.
Here I document my practical experiences — the things I learned, the mistakes I made along the way, and hopefully a useful tip or two around cloud, self-hosting, networking and security.
My focus is on IT infrastructure with an emphasis on networking, security, and Linux. Certified in LPIC-2, CompTIA Network+, AWS CCP, and BSI IT-Grundschutz — backed by years of homelab experience and initial IT support work. I am looking to start my IT career as a systems integrator, network specialist, or in a DevOps environment.
My Network & Security Focus
Networking & Firewalling
CompTIA Network+ and Cisco Networking Basics certified. I use OpenBSD pf as firewall/router and am increasingly working my way into network security and protocols.
Cloud & Infrastructure as Code
Oracle OCI Foundations Associate and AWS Cloud Practitioner completed. I am learning cloud architectures and Infrastructure-as-Code and continuing to build on this.
Privacy-First Services
DNS resolver with Unbound, hardened mail servers, SearXNG instance – I run self-hosted services with a focus on privacy and minimal attack surface.
Hardened Linux Systems
LPIC-1 & LPIC-2 certified. I work with OpenBSD and hardened Linux systems and keep learning about system configuration and hardening.
Open Source Tooling
OpenBSD pf, WireGuard VPN, Pi-hole DNS and Fail2ban – I use open-source tools to secure my infrastructure and keep learning along the way.
Threat Detection & Monitoring
System logs, basic intrusion detection and security monitoring – through CISA training and practice I am learning to identify and assess security incidents.
Certification-based Core Competencies
Expert Level (5+ Certifications + Practice)
Advanced Level (3-4 Certifications)
Intermediate Level (Emerging Expertise)
Familiar Level (Foundation Knowledge)
Programming & Automation Expertise
Advanced Level (System Administration)
Intermediate Level (Infrastructure)
Security-First Networking – Core Competencies
- Network Security Architecture: From firewall rules to cloud security – comprehensive security concepts
- Hardened Infrastructure: Hardened multi-service environment productively operated for years
- Privacy-by-Design: Secure open-source alternatives to proprietary enterprise solutions
- Hands-on Security Engineering: Practical implementation of zero-trust architectures and defense-in-depth
- Multi-Cloud Security: Cloud-agnostic security strategies for hybrid infrastructures
- Open Source Advocacy: Promoting transparent and auditable security solutions