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Samba. Advanced System Administration Course James Lwali University computing Centre Ltd, University of Dar es salaam, E-mail: jamesjm@udsm.ac.tz Website: www.ucc.co.tz. Samba.

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Samba

Samba

Advanced System Administration Course

James Lwali

University computing Centre Ltd,

University of Dar es salaam,

E-mail: jamesjm@udsm.ac.tz

Website: www.ucc.co.tz


Samba1

Samba

  • Samba is a suite of utilities that allows your Linux box to share files and other resources, such as printers, with Windows boxes.

  • Either configuration will allow everyone at home to have:

    • their own logins on all the home windows boxes while having their files on the Linux box appear to be located on a new Windows drive

    • shared access to printers on the Linux box

    • shared files accessible only to members of their Linux user group.

    • A PDC stores the login information in a central database on its hard drive. This allows each user to have a universal username and password when logging in from all PCs on the network.

    • In a Windows Workgroup, each PC stores the usernames and passwords locally so that they are unique for each PC.


Download and install packages

Download and Install Packages

  • Most RedHat and Fedora Linux software products are available in the RPM format. Samba is comprised of a suite of RPMs that come on the Fedora CDs. The files are named:

  • samba

  • samba-common

  • samba-client

  • samba-swat


How to get samba started

How to Get Samba Started

  • You can configure Samba to start at boot time using the chkconfig command:

    [root@test tmp]# chkconfig smb on

  • You can start/stop/restart Samba after boot time using the smb initialization script as in the examples below:

    • [root@test tmp]# service smb start

    • [root@test tmp]# service smb stop

    • [root@test tmp]# service smb restart


The samba configuration file

The Samba Configuration File

  • The /etc/samba/smb.conf file is the main configuration file you'll need to edit. It is split into five major sections,

    • [global] - General Samba configuration parameters

    • [printers] - Used for configuring printers

    • [homes] - Defines treatment of user logins

    • [netlogon] - A share for storing logon scripts.

      (Not created by default.)

    • [profile] - A share for storing domain logon information such as "favorites" and desktop icons.

      (Not created by default.)

      You can edit this file by hand, or more simply through Samba's SWAT web interface.

      NOTE: Make sure you copy the original configuration file before editing it!


The global section

The [Global] Section

  • The [global] section governs the general Samba settings.


Samba

Cont..


The homes section

The [homes] Section

  • The [homes] section governs how Samba handles default login directories.


The netlogon and profiles share sections

The [netlogon] and [profiles] Share Sections

  • The [netlogon] share section contains scripts that the windows clients may use when they log into the domain.

  • The [profiles] share section stores things such as favorites and desktop icons.

  • Your smb.conf file should look like this when you're finished:

    [netlogon]

    path = /home/samba/netlogon

    guest ok = Yes

    [profiles]

    path = /home/samba/profiles

    read only = No

    create mask = 0600

    directory mask = 0700


Samba

Cont…

  • Remember to create these share directories from the command line afterwards.

    [root@test tmp]# mkdir -p /home/samba/netlogon

    [root@test tmp]# mkdir -p /home/samba/profile

    [root@test tmp]# chmod -R 0755 /home/samba


The printers share section

The [printers] Share Section

  • Samba has special shares just for printers, and these are configured in the [printers] section.

    [printers]

    comment = All Printers

    path = /var/spool/samba

    printable = Yes

    browseable = No


How to create a samba pdc administrator user

How To Create A Samba PDC Administrator User

  • By default, the root user is the Samba administrator, Fortunately, you can add workstations to the Windows domain by creating a Samba specific root password. This is done using the smbpasswd command.

    [root@test tmp]# /usr/bin/smbpasswd -a root password

    Note:Samba domain logins use the smbpasswd password. Samba passwords are stored in the /etc/samba/smbpasswd file.


Adding the users in linux

Adding The Users In Linux

  • To create the user, use the command:

    [root@test tmp]# useradd -g 100 peter

  • Giving them a Linux password is only necessary if the user needs to log into the Samba server directly. If the user does, use this method:

    [root@test tmp]# passwd peter

    Changing password for user peter.

    New password:

    Retype new password:

    passwd: all authentication tokens updated successfully.

    [root@test tmp]#


Creating group shares in samba

Creating Group Shares in SAMBA

1. Create a new Linux group managers:

[root@test tmp]# /usr/sbin/groupadd managers

2. Create a new directory for the group's files. If one user is designated as the leader, you might want to change the chown statement to make them owner

[root@test tmp]# mkdir /home/managers-files

[root@test tmp]# chgrp parents /home/managers-files

[root@test tmp]# chmod 0770 /home/managers-files


Samba

Cont…

3. Add the group members to the new group. For instance, the command to add a user named jimmy to the group is:

[root@test tmp]# /usr/sbin/usermod -G managers jimmy

All your members are in the group; now they need to share.


Mapping the linux users to an smbpassword

Mapping The Linux Users To An smbpassword

  • Next, you need to create Samba domain login passwords for the user

    [root@test tmp]# /usr/bin/smbpasswd -a username password

    The -a switch adds the user to the /etc/smbpasswd file. Use a generic password then have users change it immediately from their workstations in the usual way.

  • Remember the smbpasswd sets the Windows Domain login password for a user, which is different from the Linux login password to log into the Samba box.


How to delete users from your samba domain

How To Delete Users From Your Samba Domain

  • Deleting users from your Samba domain is a two stage process in which you have to remove the user from the Linux server and also remove the user's corresponding smbpasswd entry. Here's how:

    1. Delete the users using the smbpasswd with the -x switch

    [root@test tmp]# smbpasswd -x john

    Deleted user john.

    [root@test root]#

    2. Delete The Linux User by following the normal deletion process. For example, to delete the user john and all john's files from the Linux server use:

    [root@test tmp]# userdel -r john


Samba

Cont…

Sometimes you may not want to delete the user's files so that they can be accessed by other users at some other time. In this case you can just deactivate the user's account using the passwd -l username command.


Samba

EnD


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