Making /home not accessible by outsiders

[ThanhVu Nguyen <thanhvunguyen@psu.edu>]

Hello during the installation I choose yes when the installer ask if I
want to make user directory accessible by other users (that was the
default).  Now I changed my mind, because even /root is readable by
others ... 

is there a way to reverse what I have chosen ?  reconfigure something ? 
Or may be a chmod command that would do the trick ? 


thanks  






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