SSSD
System Security Services Daemon: the service that connects Linux to a directory such as LDAP or Active Directory and caches its users and passwords.
In more detail
realm join enrols a machine and writes its configuration. SSSD serves accounts through NSS and logins through PAM, and its cache keeps logins working while the directory is unreachable.
Related terms
- PAM — Pluggable Authentication Modules: the framework that lets login programs hand password checks and account rules to configurable modules.
- NSS — Name Service Switch: the system that decides where Linux looks up users, groups and host names, set in /etc/nsswitch.conf.
Taught in
- One Word Locked Out Every Directory User: PAM, SSSD, LDAP And Kerberos — CompTIA Linux+ (XK0-006) Exam Prep
- User Limits: Who Gets Which Number At Login — Linux Foundation Certified System Administrator (LFCS) Exam Prep
- LDAP Users Through SSSD — Linux Foundation Certified System Administrator (LFCS) Exam Prep