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Samba Server Installation and Configuration on CentOS 7

This guide explains how to configure samba server in CentOS 7 with anonymous & secured samba servers. Samba is an Open Source/Free Software suite that provides seamless file and print services to SMB/CIFS clients. Samba is freely available, unlike other SMB/CIFS implementations, and allows for interoperability between Linux/Unix servers and Windows-based clients.

1 Preliminary Note

I have a fresh installed CentOS 7.0 server, on which I am going to install the samba server. Off-course you need to have one windows machine to check the  samba server that must be reachable with the CentOS 7.0 server. My Centos 7.0 server have hostname & IP as


  • The Windows machine must be on same workgroup. To check the value in windows machine run the command at cmd prompt

net config workstation

It will be like this


Your windows machine must be at same Workstation domain as in CentOS 7.0 server, i.e. WORKGROUP in my case.

  • To make the windows machine reachable in windows proceed like this. In the run terminal & add  the entry of your server IP address

notepad C:\Windows\System32\drivers\etc\hosts

In my case it was like this, just save the values.

[...]	centos

2 Anonymous samba sharing

First I will explain the methodology to install the samba with the anonymous sharing. To install samba run,

yum install samba samba-client samba-common

It will install samba with Version 4.1.1.

Now to configure samba edit the file /etc/samba/smb.conf before making changes I will make the backup of original file as  /etc/samba/smb.conf.bak

mv /etc/samba/smb.conf /etc/samba/smb.conf.bak

Further give the entries like this

vi /etc/samba/smb.conf

workgroup = WORKGROUP
server string = Samba Server %v
netbios name = centos
security = user
map to guest = bad user
dns proxy = no
#============================ Share Definitions ============================== 
path = /samba/anonymous
browsable =yes
writable = yes
guest ok = yes
read only = no


mkdir -p /samba/anonymous
systemctl enable smb.service
systemctl enable nmb.service
systemctl restart smb.service
systemctl restart nmb.service

Further CentOS 7.0 Firewall-cmd will block the samba access, to get rid of that we will run:

firewall-cmd –permanent –zone=public –add-service=samba

[root@server1 ~]# firewall-cmd --permanent --zone=public --add-service=samba
[root@server1 ~]#


firewall-cmd –reload

[root@server1 ~]# firewall-cmd --reload
[root@server1 ~]#

Now you can access the Centos 7.0 sharing in windows as follows, go to the Run prompt and type \\centos:



From a windows machine just browse the folder and try to create a text file, but you will get an error of permission denied.


From a windows machine just browse the folder and try to create a text file, but you will get an error of permission denied.


Check the permission for the shared folder.

ls -l

drwxr-xr-x. 2 root root 6 Jul 17 13:41 anonymous
[root@server1 samba]#

To allow anonymous user give the permissions as follows:

cd /samba

chmod -R 0755 anonymous/
chown -R nobody:nobody anonymous/

ls -l anonymous/

total 0
drwxr-xr-x. 2 nobody nobody 6 Jul 17 13:41 anonymous
[root@server1 samba]#

Further, we need to allow the SELinux for the samba configuration as follows:

chcon -t samba_share_t anonymous/

Now anonymous user can browse & create the folder contents.


You can cross check the content at server also.

ls -l anonymous/

total 0
-rwxr–r–. 1 nobody nobody 0 Jul 17 16:05 anonymous.txt
[root@server1 samba]#

3. Secured samba server

Therefore, I will create a group smbgrp & user srijan to access the samba server with proper authentication.

groupadd smbgrp

useradd srijan -G smbgrp

smbpasswd -a srijan

[root@server1 samba]# smbpasswd -a srijan
New SMB password:<--yoursambapassword
Retype new SMB password:<--yoursambapassword
Added user srijan.
[root@server1 samba]# 

Now create the folder with the name secured in the /samba folder and give permissions like this:

mkdir -p /samba/secured

Again we will have to allow to listen through SELinux:

cd /samba
chmod -R 0777 secured/
chcon -t samba_share_t secured/

Again edit the configuration file as :

vi /etc/samba/smb.conf

 path = /samba/secured
 valid users = @smbgrp
 guest ok = no
 writable = yes
 browsable = yes

systemctl restart smb.service

systemctl restart nmb.service

Further check the settings as follows


[root@server1 samba]# testparm 
Load smb config files from /etc/samba/smb.conf
rlimit_max: increasing rlimit_max (1024) to minimum Windows limit (16384)
Processing section "[Anonymous]"
Processing section "[secured]"
Loaded services file OK.
Press enter to see a dump of your service definitions <--ENTER

	netbios name = CENTOS
	server string = Samba Server %v
	map to guest = Bad User
	dns proxy = No
	idmap config * : backend = tdb

	path = /samba/anonymous
	read only = No
	guest ok = Yes

	path = /samba/secured
	valid users = @smbgrp
	read only = No
[root@server1 samba]#

Now at windows machine check the folder now with the proper credentials


You will again face the issue of permissions to give write permission to the user srijan do:

cd /samba
chown -R srijan:smbgrp secured/

Now samba users have the permissions to write into the folder. Cheers, you have done with samba server in CentOS 7.0 🙂