Both beginners and advanced users may attend our classes. You are a Linux administrator and need the appropriate knowledge to setup a mail gateway based on Linux and Postfix? You need to implement a Web server, a firewall or a VPN with Linux? You must monitor the availability of your Systems and services? Then you have come to the right place. Even advanced topics like SELinux or Modsecurity are covered by our classes."

Security is very important. We would like to protect you, our customers, and our own staff in the best possible way and therefore we are offering all our classes during the pandemic as online classes!

You will be able to take part in the class as in a normal class just using a web browser. The browser will also be used to access our live class room labs for the exercises. If you are interested in a short demonstration, do not hesitate to contact us.

Further information is available.


Do you have questions about our training courses or are you interested in a training course that is not listed here? Please send us an e-mail or arrange a non-binding informational call!

  • OpenSource Security GmbH
    Am Bahnhof 3-5
    48565 Steinfurt
  • Beschwerden/Complaints
  • +49 (0)2552 / 927009-0
  • +49 (0)2552 / 927009-9
  • Prüfstelle BSI-APS-9058
  • Geschäftsführer: Ralf Spenneberg, Hendrik Schwartke
  • Ust.-Id.Nr.: DE 815 773 501
  • Registergericht: Amtsgericht Steinfurt, HRB 12044
  • Inhaltlich Verantwortlicher gemäß §6 MDStV: Ralf Spenneberg
  • Privacy Information