Thanks Craig for your soon answer.. I've now the FDS up and running... I am now creating my users in FDS because I want to unify the authentication of my 3 centos servers. BUT, When I create my users in FDS I don't see any option of UID, GID, home directory, etc, so the FDS server return an error and my remote users can't authenticate....... my question is? 1. Can I use FDS to authenticate remote linux users? I mean create in FDS a user with UID, GID, home directory. 2. Can I set up another server with authconfig (Use LDAP Authentication) pointing to my FDS? 2. Does FDS do exactly the same of openldap? 3. Does anybody knows any way to migrate all users from /etc/passwd to FDS? (I know openldap does) 4. Is FDS better than Openldap? PD: I just want set up a LDAP server to my network to unify all my servers. Regards; Israel