RHCE LAB/Red Hat System Administration III missing LAB

Subhect: There is objective for host based security in RHCE exam but missing related lab and proper explanation for NFS, SAMBA, HTTPD, SSH

RHCE LAB course or Red Hat System Administration III do not cover lab material on host based security for NFS, SAMBA,httpd,SSJD

There is not even enough explanation theory how it can be done, but at the same time there is objective for the exam

There should one LAB for NFS, SAMBA, HTTPD, SSH

e.g. How sub-doamin or subnet can be restricted for NFS, SAMBA, HTTPD, SSH
How user,group can be restricted for HTTPD in config file with Require directives

Thank you
Yash