5.2.3. 系统安全性服务守护进程
The SSSD is intended to provide several key feature enhancements to Fedora. The first being the addition of offline caching for network credentials. Authentication through the SSSD will potentially allow LDAP, NIS, and FreeIPA services to provide an offline mode, to ease the use of centrally managing laptop users.
The LDAP features will also add support for connection pooling. All communication to the ldap server will happen over a single persistent connection, reducing the overhead of opening a new socket for each request. The SSSD will also add support for multiple LDAP/NIS domains. It will be possible to connect to two or more LDAP/NIS servers acting as separate user namespaces.