Univention Corporate Server 4.4

UCS is a reliable, pre-configured Linux server operating system. Its purpose is to provide Microsoft server-like services on the cloud (also for OpenStack and Amazon EC2 environments) or on-premise, to run and operate corporate IT environments with Windows- and Linux-based clients and to extend those environments with proven enterprise software via the Univention App Center in form of UCS-components or third-party products such as ownCloud, Nextcloud a.o. It features: Active Directory-like domain services compatible with Microsoft Active Directory. The included tool AD Takeover migrates a Microsoft Active Directory to UCS via Samba 4 and the tool AD Connection integrates a UCS domain in an AD domain or allows automatic sync between the AD and the OpenLDAP UCS is using. UCS also features a mature and easy-to-use web-based management system for user, rights and infrastructure management; a scalable underlying concept suited for single server scenarios but also to run and manage a host of clients and servers for a host of users within one single UCS domain; capabilities to manage Linux- and UNIX-based clients; command line, scripting interfaces and APIs for automatization and extension; user, group and rights administration; an integrated IP management (DNS, WINS, DHCP) and file and printer services. UCS is freely available as a Core Edition for commercial and private use. Maintenance services are extra. Download at: https://www.univention.com/downloads/ Or try the online demo!

Tags it-infrastructure-management active-directory-migration domain-management cloud-management samba-4 app-center linux-distribution open-source
License Affero GPLv3
State stable

Recent Releases

4.412 Mar 2019 14:10 minor feature: On March 12, 2019 UCS 4.4 was released. Release notes with all details at: https://docs.software-univention.de/release-notes-4.4-0-en.html
4.3-317 Dec 2018 13:15 minor feature: On December 11, 2018, UCS 4.3-3 was released. Release notes with all details at: http://docs.software-univention.de/release-notes-4.3-3-en.html
4.320 Mar 2018 12:12 minor feature: On March 14, 2018, UCS 4.3 was released. Release notes with all details at: http://docs.software-univention.de/release-notes-4.3-0-en.html
4.2-330 Nov 2017 14:11 minor feature: On November 28, 2017, UCS 4.2-3 was released. Release notes with all details at: http://docs.software-univention.de/release-notes-4.2-3-en.html
4.2-206 Sep 2017 09:53 minor feature: On Septembr 5, 2017, UCS 4.2-2 was released. Release notes with all details at: http://docs.software-univention.de/release-notes-4.2-2-en.html
4.2-121 Jun 2017 09:29 minor feature: On June 20, 2017, UCS 4.2-1 was released. Release notes with all details at: http://docs.software-univention.de/release-notes-4.2-1-en.html
4.206 Apr 2017 08:52 major feature: On April 4, 2017, UCS 4.2 was released, some of the major innovations are: - A configurable web portal provides an overview of the services installed in the domain. - Switch of the default startup system to systemd - The usability and user guidance of the password self service was revised after usability tests. - Update to Samba 4.66 with lots of detail improvements and better performance. - Update to Kernel 4.91. - Update to Docker 1.12. - Change from Debian 7 (Wheezy) to Debian 8 (Jessie) Release notes with all details at: https://docs.software-univention.de/release-notes-4.2-0-en.html
4.1-409 Nov 2016 11:12 minor feature: On November 8, 2016, UCS 4.1-4 was released, some of the major innovations are: - Installation wizard and management system now in French - Update to Samba 4.5.1 - Update to the latest long-term Linux kernel 4.1 version - Optimizations in the ares of DRS replication, compatibility of UCS with Active Directory, file services, printer handling, and OpenLDAP configuration - Faster and better synchronization of objects between OpenLDAP and the Samba 4 directory in large environments - Active Directory Connector now supports the synchronization of groups with more than 1,500 members - Easier configuration and maintenance of Docker apps in the Univention App Center - Important security updates, among other things, for Bind9, MySQL, OpenSSL, and the Linux kernel Release notes with all details at: http://docs.software-univention.de/release-notes-4.1-4-en.html
4.1-310 Aug 2016 09:21 minor feature: On August 9, 2016, UCS 4.1-3 was released, some of the major improvements are: Various important security updates, among others for libvirt, OpenSSL, QEMU and Samba; Elimination of potential security risks in the LDAP ACLs; Stabilization of the replication mechanisms, for example as to the renaming of LDAP objects with several RDNs (Relative Distinguished Names); The login into the UMC (Univention Management Console) now also works with Chrome 51; Various improvements of the App Center s Docker integration such as the running of join scripts in Docker containers and the registration on the UCS overview page; Apps can now be provided with an individual branding and a fast demonstration mode and can also be easier dockerized . Release notes with all details at: http://docs.software-univention.de/release-notes-4.1-3-en.html
4.1-211 May 2016 10:18 minor feature: On May 10, 2016, UCS 4.1-2 was released, some of the major improvements are: Security updates for Samba, Apache, OpenSSL and the GNU C-library, update to Samba 4.3.7 with various security updates, closure of the Badlock bug, among other things. Access of the UCS Active Directory Connector to the standard interfaces of the Active Directory for the synchronization of passwords, improvements of the Bootloader configuration of GRUB for the serial console and hence the easier use of UCS by visually impaired administrators, better support for the use of the UMC via mobile devices, adaptations of the App Center such as information on the licensing conditions of apps, new sorting function and display of more details in the DNS module, performance improvements of the print quota
4.1-118 Feb 2016 13:02 minor feature: On Feb 16, 2016, UCS 4.1-1 was released, some of the major improvements are: Update of Linux kernel to 4.1.16, Update to Samba 4.3.3 which improves compatibility to Active Directory as well as the DRS replication, Performance increase of the Directory service replication which leads to much faster domain joins with thousands of users, Numerous security updates, among others, for MySQL, OpenJDK or the Bootloader Grub, UCS Virtual Machine Manager (UVMM) now supports the migration of stopped virtual machines and UVMM can now also manage Virtual Private Clouds (VPC) in Amazon Web Services (AWS), The self service functions have been improved, The installer now supports the automatic setup of systems in the role domain controller master. On Nov 17, 2015, UCS 4.1 was released with important new features: Support of Docker-based apps in the Univention App Center, Single sign-on in the UCS management system via SAML technology, Even safer login process via optional two-factor authentication,User self-service for the password reset, Technical basis: Linux longterm kernel 4.1.12, OpenLDAP version 2.4.42 and Samba 4.3.1
4.123 Nov 2015 11:13 minor feature: On Nov 17, 2015, UCS 4.1 was released with important new features: Support of Docker-based apps in the Univention App Center, Single sign-on in the UCS management system via SAML technology, Even safer login process via optional two-factor authentication,User self-service for the password reset, Technical basis: Linux longterm kernel 4.1.12, OpenLDAP version 2.4.42 and Samba 4.3.1
4.0-312 Aug 2015 09:52 minor feature: On May 11, 2015, Univention released the third point release 4.0-3 of its Linux Enterprise distribution Univention Corporate Server providing numerous bugfixes and (security) updates as well as improvements in design and usability of the UCS management system. New is the automatic creation of Univention Apps for all major virtualization environments (VMware, VMware ESX, VirtualBox, and KVM) that are ready for use and instantly available via the Univention App Center. Univention Apps are complete applications consisting of the UCS platform, UCS Virtual Machine Manager as the management system, and the app itself such as ownCloud, Open-Xchange, Zarafa, or Bareos. They come with an automatic patch, update, and life cycle management and can be easily integrated into existing (Active Directory) environments. Further highlights of UCS 4.0-3 are: Increase in performance of the UCS mail component thanks to the integration of the mail server Dovecot as UCS' default IMAP/POP3 server Faster navigation within the management interface via the use of the web browser's back and forth button Provision of additional LDAP filters that limit the efficacy of LDAP-based guidelines to objects matching the filters Update to the latest Samba software version 4.2.3 with improvements in the DRS replication and as to the handling of printer drivers Latest, stable longterm Linux kernel 3.16, which includes various security updates as well as additional and updated drivers for improved hardware support. Further information in the Univention blog at: https://www.univention.com/2015/08/release-of-univention-corporate-server-4-0-3-2/
4.0-212 May 2015 12:49 minor feature: The second patchlevel release of UCS 4 has been published today including numerous user feedback-based improvements in the areas of usability and security plus a wide range of bug fixes. Completely new is the integration of the Linux container technology Docker to run Docker containers on UCS which is the first step to enabling the App Center to handle Docker images, thus strengthening the App Center as the central and secure platform for the operation of different applications. Further Highlights: UCS now for free without limitations for everyone incl. companies with the UCS Core Edition; Automatic configuration of apps from the App Center when performing remote installations; New tutorial for ISVs about how to package for UCS as well as how to include apps in the UCS management system and make them available via the App Center; Usability improvement, e.g., as to the login-process, when importing the license and within the configuration assistant; Improvements in the Samba 4 and Active Directory compatibility; Automatic network-based installation of UCS; Improvements of the UCS mail server; Improvements of security settings in the Apache web server to disable old encryption settings. Further information in the Univention blog at: https://www.univention.com/2015/05/ucs-4-0-2-released/
4.0-112 Feb 2015 10:48 minor feature: This first patchlevel release after the release of UCS 4.0 includes many new features, e.g.: - Update of the UCS basis through the integration of the Debian "Wheezy" 7.8 point update - Simplification of the UCS system setup - Improvements of the integrated tool "Active Directory Connection": This tool is perfect for everyone who wants to extend an existing Windows server environment with additional Enterprise applications via the Univention App Center. For example, groupware solutions such as OX App Suite or Zarafa which are installed via the Univention App Center can thus be managed via Microsoft Active Directory including all existing user identities. - Simplification of UCS cloud setups: Cloud setup information from cloud service providers is now directly transmitted to UCS. Thus, cloud service providers can provide their customers with a pre-configured and ready-to start UCS-based cloud installation. Further information in the Univention forum at: http://forum.univention.de/viewtopic.php?f=54 t=3747
4.020 Nov 2014 11:32 major feature: This major release includes many new features, e.g.: - complete redesign of the Univention Management Console - virtualization of OpenStack and Amazon EC2 environments - based on Debian GNU/Linux 7.7 (Wheezy) - centralised management functions for the App Center - simplified installation process via Debian installer and web-based system configuration - performance boost of the OpenLDAP directory (mdb as storage backend by default) - support of UEFI SecureBoot for installation processes Release notes at: http://docs.univention.de/release-notes-4.0-0-en.html
3.2-412 Nov 2014 10:33 minor feature: This release includes all errata updates and various improvements, e.g.: - for the operation of UCS in Microsoft Windows Active Directory domains - for the migration of Active Directory to UCS and - increased security in UCS by activating perfect forward secrecy by default and using SHA256 as default hash Release notes at: http://docs.univention.de/release-notes-3.2-4-en.html
3.2-312 Aug 2014 10:32 minor feature: This release includes all errata updates and an update to Linux kernel version 3.10.11 which involves many bug fixes and improves the hardware support. The new module Active Directory Connection merges the domain administrated by UCS and an existing Active Directory (AD). UCS is then available as a platform for the integrated operation of apps from the Univention App Center in an AD domain. The AD compatibility has been improved. UCS now supports the Microsoft Data Protection Application Program Interface (DPAPI). The UCS setup wizard has been completely revised and now guides users particularly comfortably through the domain configuration of UCS and detects, for example, configuration settings automatically and suggests useful defaults. PHP 5.4.4 has been back-ported to UCS 3.2. It can be installed from a separate repository and will receive security updates. The OpenLDAP replication has been improved significantly by tracking changes in the directory service with unique IDs. The replication performance has been improved and replication errors have been reduced. Release notes at: http://docs.univention.de/release-notes-3.2-3-en.html
3.2-231 Jul 2014 08:22 minor feature: This release adds various usability and security updates, including an update to Debian version 6.0.9. Software manufacturers can now select between the processor architectures 32 and 64 bit for the provision of apps in the App Center. The AD integration to UCS is optimized, e.g. the domain join of Windows clients to a UCS domain. The App Center is extended and includes new apps and UCS components, e.g. the RADIUS app for access control of internal WLAN networks and the AD Takeover assistant for complete migration of AD domains to UCS.