Q: How to share home folders with read only permission (Authentication=Yes)?

1. Read General Notes
2. Read How to install Samba Server for files/folders sharing service?

3. sudo cp /etc/samba/smb.conf /etc/samba/smb.conf_backup
   sudo gedit /etc/samba/smb.conf

4. Find this line

   ...
   ;   security = user
   ...

5. Replace with the following lines

      security = user
      username map = /etc/samba/smbusers

6. Save the edited file (sample)
7. Read How to add/edit/delete network users?

8. sudo testparm
   sudo /etc/init.d/samba restart