root@ubuntu24:~# cat /etc/default/samba 
NMBDOPTIONS=
SMBDOPTIONS=
root@ubuntu24:~# 

================================================
root@ubuntu24:~# cat /etc/samba/smbusers
test01 = test localuser1
root@ubuntu24:~# 

================================================
root@ubuntu24:~# diff -u /etc/samba/smb.conf.org /etc/samba/smb.conf
--- /etc/samba/smb.conf.org     2025-02-09 10:00:22.388077042 +0900
+++ /etc/samba/smb.conf 2025-02-09 15:09:02.732242347 +0900
@@ -26,7 +26,7 @@
 ## Browsing/Identification ###
 
 # Change this to the workgroup/NT-domain name your Samba server will part of
-   workgroup = WORKGROUP
+   workgroup = SMBGROUP
 
 # server string is the equivalent of the NT Description field
    server string = %h server (Samba, Ubuntu)
@@ -54,7 +54,7 @@
    log file = /var/log/samba/log.%m
 
 # Cap the size of the individual log files (in KiB).
-   max log size = 1000
+   max log size = 50
 
 # We want Samba to only log to /var/log/samba/log.{smbd,nmbd}.
 # Append syslog@1 if you want important messages to be sent to syslog too.
@@ -88,7 +88,8 @@
 # parameters must be set (thanks to Ian Kahan <<kahan@informatik.tu-muenchen.de> for
 # sending the correct chat script for the passwd program in Debian Sarge).
    passwd program = /usr/bin/passwd %u
-   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
+#   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
+   passwd chat = *new*password* %n\n *new*password* %n\n *successfully*
 
 # This boolean controls whether PAM will be used for password changes
 # when requested by an SMB client instead of the program listed in
@@ -97,7 +98,7 @@
 
 # This option controls how unsuccessful authentication attempts are mapped
 # to anonymous connections
-   map to guest = bad user
+   map to guest = Never
 
 ########## Domains ###########
 
@@ -167,6 +168,11 @@
 # public shares, not just authenticated ones
    usershare allow guests = yes
 
+dos charset = CP932
+load printers = no
+disable spoolss = yes
+username map = /etc/samba/smbusers
+
 #======================= Share Definitions =======================
 
 # Un-comment the following (and tweak the other settings below to suit)
@@ -216,23 +222,23 @@
 ;   create mask = 0600
 ;   directory mask = 0700
 
-[printers]
-   comment = All Printers
-   browseable = no
-   path = /var/tmp
-   printable = yes
-   guest ok = no
-   read only = yes
-   create mask = 0700
+;[printers]
+;   comment = All Printers
+;   browseable = no
+;   path = /var/tmp
+;   printable = yes
+;   guest ok = no
+;   read only = yes
+;   create mask = 0700
 
 # Windows clients look for this share name as a source of downloadable
 # printer drivers
-[print$]
-   comment = Printer Drivers
-   path = /var/lib/samba/printers
-   browseable = yes
-   read only = yes
-   guest ok = no
+;[print$]
+;   comment = Printer Drivers
+;   path = /var/lib/samba/printers
+;   browseable = yes
+;   read only = yes
+;   guest ok = no
 # Uncomment to allow remote administration of Windows print drivers.
 # You may need to replace 'lpadmin' with the name of the group your
 # admin users are members of.
@@ -240,3 +246,17 @@
 # to the drivers directory for these users to have write rights in it
 ;   write list = root, @lpadmin
 
+[Share]
+comment = Share Folder for All Users
+path = /home/share
+browsable = yes
+read only = no
+
+[Share-only]
+comment = itibu Users
+path = /home/share-only
+browsable = yes
+read only = yes
+write list = @ok
+hosts allow = 172.16.3.0/255.255.255.0
+valid users = @ok
root@ubuntu24:~#