#chown root:named /usr/local/samba/private
#chmod 775 /usr/local/samba/private
#chown root:named /usr/local/samba/private/dns.keytab
#chmod 640 /usr/local/samba/private/dns.keytab
 
# ls -ld /usr/local/samba/private/
drwxrwxr-x 7 root named 4096 сен 30 13:26 /usr/local/samba/private/
  
# ls -l /usr/local/samba/private/dns.keytab
-rw-r----- 2 root named 717 сен 30 13:26 /usr/local/samba/private/dns.keytab

#chmod 770 /usr/local/samba/bind-dns 
#chown root:named /usr/local/samba/bind-dns