Am 11.01.2016 um 21:44 schrieb Nicholas Geovanis: > I find the passwd, shadow and group lines in my CentOS 7 /etc/nsswitch.conf > file specify "files sss". I'm not familiar with the "sss" source, would > someone please give me an idea what that is? Many thanks....Nick https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Windows_Integration_Guide/SSSD-AD.html https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/Deployment_Guide/SSSD-Introduction.html Alexander