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249 Stars 151 Forks GNU General Public License v3.0 10.1K Commits 308 Opened issues


A daemon to manage identity, authentication and authorization for centrally-managed systems.

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SSSD - System Security Services Daemon


SSSD provides a set of daemons to manage access to remote directories and authentication mechanisms such as LDAP, Kerberos or FreeIPA. It provides an NSS and PAM interface toward the system and a pluggable backend system to connect to multiple different account sources.

More information about SSSD can be found on its project page -

Downloading SSSD

SSSD is shipped as a binary package by most Linux distributions. If you want to obtain the latest source files, please navigate to the Releases folder on GitHub.


SSSD maintains two release streams - stable and LTM. Releases designated as LTM are long-term maintenance releases and will see bugfixes and security patches for a longer time than other releases.

The list of all releases is maintained together with SSSD documentation.

Building and installation from source

Please see the our developer documentation.


The most up-to-date documentation can be found at

Its source code is hosted at

Submitting bugs

Please file an issue in the SSSD github instance. Make sure to follow the guide on reporting SSSD bugs.


Please see the file called COPYING.


There are several ways to contact us:

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