Become Part of our Team and Push Digital Sovereignty
- Teamleader IT / Project Manager (m/f/x)
- IT Consultant (m/f/x)
- Outbound Sales Represantative (m/f/x)
- a.m.m.

Univention Corporate Server logs all these events and more. If you don’t feel like reading detailed log files and just want a brief overview of the events in your UCS domain, you can read the Admin Diary. In this article, I’m going to explain how to install and how to set up our diary for sysadmins. We’re also going to look at the information it offers.
In this article I would like to give you an insight into the topic “Securing the Internet-based exchange of information through certificates”. I’ll take a quick look back at the beginnings of the Internet and the use of protocols such as HTTP, SMTP, POP … and their encrypted transport via SSL or TLS. Above all, however, I would like to explain to you how you can use public certificates with Univention Corporate Server to secure your data transfer or also how you can create trustworthy certificates by yourself with Let’s Encrypt. Completely secure and free of charge on top.
Version 4.4-4 of Univention Corporate Server (UCS) comes with some cool new features, one of them being the new AD Connector app. It makes the synchronization of password hashes between a Microsoft Active Directory domain and a UCS domain significantly more secure and less error-prone. While previous versions could only synchronize NTLM hashes, the AD Connector of UCS 4.4-4 also reads newer hashes, the so-called Kerberos keys which allow single sign-on (SSO) to different applications.
I am a second-year trainee at Univention (job description: IT specialist for application development). I was involved in the development of the new feature and mainly had to deal with three tasks: the AD Connector itself, the OpenLDAP overlay module, and the S4 Connector (Samba). In this blog post I’m going to explain what Kerberos hashes are and how I implemented the new feature.