How to Install and Configure Samba File Server on Ubuntu 20.04

How to Install and Configure Samba File Server on Ubuntu 20.04

The Server Message Block (SMB) protocol is implemented Samba, an opensource package. SMB is a client-server networking protocol used by Microsoft Windows and the OS/2 operating systems for file and printer sharing, as well as other functions. It runs on a Unix system and allows Windows to share files and printers with the Unix host, as well as giving Unix users access to resources shared by Windows. As a result, anyone who has both Windows and Unix systems on their network will find it highly handy.

How to Install and Configure Samba File Server on Ubuntu 20.04

Samba can be used in the following ways:

  • A member of an Active Directory (AD) or NT4 domain
  • a self-contained server
  • PDC (Primary Domain Controller) or BDC (Backup Domain Controller) for NT4

Install Samba

$ apt update
$ apt install samba smb-client cifs-utils

 Configure Samba

After installing the Samba package, configure the Samba file server on Ubuntu 20.04.

Create a Shared Directory/Folder

Make a directory in which you’ll store files that will be shared. You can make shared folders that are public or private.

$ mkdir /smb-public $ mkdir /smb-private

Configure Samba File Server on Ubuntu 20.04

To edit the Samba configuration file, open it in your favorite editor.

$ vim /etc/samba/smb.conf
Global Samba configuration

Our global Samba configuration is shown below, with comment lines removed.

unix charset = UTF-8 
workgroup = WORKGROUP 
server string = %h server (Samba, Ubuntu) 
log file = /var/log/samba/log.%m 
log level = 1 max log size = 1000 
logging = file panic action = /usr/share/samba/panic-action %d server 
role = standalone server obey pam restrictions = yes 
unix password sync = yes 
passwd program = /usr/bin/passwd %u 
passwd chat = *Entersnews*spassword:* %nn 
*Retypesnews*spassword:* %nn *passwordsupdatedssuccessfully* 
. pam password change = yes map to guest = bad 
user usershare allow guests = yes

Public Share Configuration

[sourcecode language=”plain”][publicshare] path = /smb-public writable = yes guest ok = yes guest only = yes force create mode = 775 force directory mode = 775 [/sourcecode]

Private Share Configuration

[sourcecode language=”plain”][privateshare] path = /smb-private writable = yes guest ok = no valid users = @smbinternal force create mode = 770 force directory mode = 770 inherit permissions = yes [/sourcecode]

Create Samba Share User Group

To grant access to the private share, create a smbinternal group and add particular users to it.

$ groupadd smbinternal

Update the permissions

$ chgrp -R smbinternal /smb-private 
$ chgrp -R smbinternal /smb-public 
$ chmod 2770 /smb-private 
$ chmod 2775 /smb-public 

Make local accounts for the people you want to have access to the private folder. The shell is not required for the users.

$ useradd -M -s /sbin/nologin demouser 
$ usermod -aG smbinternal demouser smbpasswd -a demouser smbpasswd -e demouser 
$ systemctl restart smbd 
$ systemctl status smbd

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