Betriebssysteme:

Windows 9x - 11
Windows 2000 – 2021 Server
Linux
Unix


Datenbanken:
MySQL
MS SQL-Server (2003 – 2012)


Programmiersprachen:
Bash- / Shellscript
HTML
VB
C / C++
PowerShell


Netzwerk:
Active Directory
DNS
DHCP
LAN
WAN, WLAN, DSL & ISDN
VPN (Virt. Private Netw.)
Firewall
SAN, NAS
Load-Balancing (F5)


Software, Engineering und Tools:
Apache Tomcat
Microsoft IIS
Fernwartung – pcAnywhere, TeamViewer, LogMeIn
RedHat JBoss EAP
Dopix ICON / Quadient
BAV-Manager B+M Informatik
Credit Application Manager Prof. Schumann
Adobe
Virtualisierung – VMWare (ESX / vSphere)
Virtualisierung - Oracle VirtualBox, Microsoft VirtualPC
IT Infrastructure Library (ITIL v3)
Remedy (DSD, OSD, SDM12)
Microsoft Visio
Microsoft Terminalserver 2003 – 2012 R2
Citrix (u.a. XenApp, XenDesktop)
WSUS
Exchange Server 2000 – 2010
SCCM 2007- 2012
Docker
Microsoft Azure
VitalQIP
HP Data Protector
Microsoft SharePoint
Lexware