Configuring SAMBA Server in RHEL7/ Cent OS 7

We are going to learn how to configure SAMBA Server in RHEL7 / Cent OS  7. Its used to share file and printer sharing over the network.

Now a days its used as Domain controller like Windows Active Directory.

Will integrate SAMBA Server with Windows Domain as a Primary domain controller or as a domain member.

Operating System:  RHEL7
Host Name:   server
IP Address:  192.168.43.226 / 255.255.255.0

Port numbers for Samba server :
137/tcp
137/udp
138/tcp
138/udp
139/tcp
139/udp
445/tcp
445/udp
Daemons:
  1. smbd: This is for file and printer sharing services
  2. nmbd:  This is for NetBIOS to IP Address service and Mapping NetBIOS Compluter Name to the TCP/IP IP Addresses.
Installing SAMBA Server:
 
#yum install –y samba samba–commons cups–libs policycoreutils–python samba–client
Below command will install all the packages which is required for samba server configuration.
 [root@server ~]# yum install -y samba
 
Create directory for sharing:
 
[root@server ~]# mkdir /sharedir
Create a new group called samba
 
#groupadd samba
 [root@server ~]# groupadd samba
 
 

change the group and permission for the directory which we are going to share using samba

[root@server ~]# chgrp -R samba /sharedir
[root@server ~]# chmod -R 777 /sharedir


check for the existing group and permission details for the directory.

[root@server ~]# ll / | grep sharedir
drwxrwxrwx. 2 root samba 6 Nov 11 08:59 sharedir
Now change the group and permission for the directory

Now again check for the group and permission for the directory and it’s changed.

Create a new user called test and add it to our newly created group which is called samba. Then set the samba password for the user.


[root@server ~]# useradd smbuser
[root@server ~]# usermod -G samba smbuser
[root@server ~]# smbpasswd -a smbuser
New SMB password:
Retype new SMB password:
Added user smbuser.
For samba default configuration file is /etc/samba/smb.conf 


We are going to edit this configuration file. Before that its advisable to take backup of configuration file.

#cp -p /etc/samba/smb.conf  /etc/samba/smb.conf.bkp


now we will edit the smb.conf file

[root@server ~]# vi /etc/samba/smb.conf
make the below entries at end of line.
Comment:   This will explain the operation what we are doing like sharing directory or sharing printer.
Path:           We are going to share a directory. So, here we should mention the directory with absolute path
Valid users:  Here we can mention the users and groups who has permission to access this directory.
Writeable:    i am giving yes, because i need read and write both permission.
browseable:  If you want to access the shared things using browser, we can make it as yes
Public:          We are not going to share this directory for all users. So, we should use no option.
[sharedir]
 comment = shared-directory
 path = /sharedir
 valid users = smbuser, @samba
 writeable = yes
 browseable = yes
 read only = no
 inherit acls = Yes

In the same smb.conf  file we should add our interface name and IP Address to allow the network in samba server.

And one more entry is very important that we need to mention our windows machines workgroup name. First we will use default one. If the windows machines are falling under different workgroup name. Then we have to change the workgroup name in this configuration file.

WORKGROUP  =  MYGROUP

We can add the services in /etc/services file.


[root@server ~]# vi /etc/services
netbios-ns 137/tcp # netbios name service
netbios-ns 137/udp # netbios name service
netbios-dgm 138/tcp # netbios datagram service
netbios-dgm 138/udp # netbios datagram service
netbios-ssn 139/tcp # netbios session service
netbios-ssn 139/udp # netbios session service


Now start the samba service and enable the service permanently on this run level.

[root@server ~]# systemctl start smb.service
[root@server ~]# systemctl enable smb.service
Created symlink from /etc/systemd/system/multi-user.target.wants/smb.service to /usr/lib/systemd/system/smb.service.

Same like that start and enable nmb service.

#systemctl start nmb.service
#systemctl enable nmb.service



 Add the firewall rule to allow the samba service via firewall.
In RHEL 7 firewall has been shipped from iptables to firewalld.

[root@server ~]# systemctl start firewalld
[root@server ~]# firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="192.168.56.0/24" service name="samba" log prefix="samba" level="info" limit value="1/m" accept'
success
[root@server ~]# systemctl enable firewalld Created symlink from /etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service to /usr/lib/systemd/system/firewalld.service.
Created symlink from /etc/systemd/system/basic.target.wants/firewalld.service to /usr/lib/systemd/system/firewalld.service.



Then reload the firewall configuration using below command

[root@server ~]# firewall-cmd --reload
success

Now all the configuration has been completed and will check in windows machine whether the samba is working well or not.

Connecting SAMBA server from linux  client machine.

samba client should be installed in linux client machine.

Package: samba-client-4.4.4-9.el7.x86_64

#yum install samba-client*

[root@server ~]# smbclient -L 192.168.43.126 -U test


-L :    This option will list the shared directories
192.168.43.226 :  IP Address of samba server
-U :  Option to mention the user name next to this which has access to this shared directory.

Output should be like below

Accessing via samba console:

#smbclient //192.168.43.226/sharedir -U test

above command will help you to show the content of shared directory and to do operations over their.



We successfully configure SAMBA server. Thanks for the support. 


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