Setup of Linux, macOS and Windows servers, maintenance and support of servers and networks, virtualization with XEN, VMware, Parallels, VirtualBox, OpenVZ and VServer. Also container virtualization and Docker management.
Evaluation of logs and log file analysis, setup and performance/optimization of server services and security solutions for file servers, web servers (incl. nginx and Caddy), content delivery networks (CDN), database servers, backup servers, (web application) firewalls, VPN, SSL, SSH, Redis, Memcached, tmpfs, proxy servers, DNS, DHCP, mail servers, ISPConfig and Plesk.
Workgroup management, user/rights management, SaaS, cloud computing, server status monitoring and availability control.