1. Assembly, repair and expansion of electronic equipment:
   • PCs / Laptops
   • Mini-PCs (Raspberry Pi, Orange Pi, ...)
   • Tablets (with Android and iOS)
   • Smartphones (with Android and iOS)
2. Installation and configuration of operating systems:
   • Windows 10 / 11
   • macOS Monterey / Ventura
   • Android - original and open source
   • iOS
   • Linux Distributions: Ubuntu, Mint, Debian, Kali, Fedora, Manjaro and more.
3. Consultation and selection of a suitable Internet provider according to the price-performance ratio. (only in Germany)
4. Network setup and optimization:
   • WAN (Internet access)
   • LAN
   • WLAN
5. Increase data protection by:
   • Firewall-Configuration
   • DNS over TLS / HTTPS (Settings of clients / server - optional, case-specific)
   • VPN (Virtual Private Network) - encrypted traffic of network
   • NID/PS (Network Intrusion Detection/Prevention System)
   • MAC (Mandatory Access Control)
   • Sandboxing (protection against Zero-Day-Exploits)
6. Installation and setup:
   • Windows Server 2019
   • SAMBA-Server on Linux - (NAS-Server)
   • DNS-Server - BIND 9 also as DoT (DNS over TLS) and DoH (DNS over HTTPS)
   • LAMP - Web-Server
   • CMS - Joomla, WordPress, TYPO3, ...
   • VirtualBox and VMs with Windows, Linux, FreeBSD, macOS (without using iCloud)
7. Programming and Scripting:
   • UNIX/LINUX Shell - Programming
   • Python - Programming
   • C/C++ - Programming
   • Java - Programming
   • Web-Development:
     • HTML/CSS
     • JavaScript
     • PHP
     • SQL (MySQL/MariaDB)