CentOS 6
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Create a Limited Shared Folder
2014/08/19
 
Install Samba to configure File Server.
This example shows to create a shared Folder which requires user authentication.
[1] Configure Samba.
[root@smb ~]#
yum -y install samba4 samba4-client
[root@smb ~]#
groupadd security

[root@smb ~]#
mkdir /home/security

[root@smb ~]#
chgrp security /home/security

[root@smb ~]#
chmod 770 /home/security

[root@smb ~]#
vi /etc/samba/smb.conf
# near line 66: add follows

unix charset = UTF-8
# line 87: change (Windows' default)

workgroup =
WORKGROUP
# line 93: uncomment and change IP address you allow

hosts allow = 127.
10.0.0.
# add follows to the end

[Security]
# any name you like

    path = /home/security
    writable = yes
    create mode = 0770
    directory mode = 0770
    guest ok = no
# guest not allowed

    valid users = @security
# allow only security group
[root@smb ~]#
/etc/rc.d/init.d/smb start

[root@smb ~]#
/etc/rc.d/init.d/nmb start

[root@smb ~]#
chkconfig smb on

[root@smb ~]#
chkconfig nmb on
# add a user for Samba

[root@smb ~]#
smbpasswd -a cent

New SMB password:    
# set password

Retype new SMB password:
Added user cent.
[root@smb ~]#
usermod -G security cent

[2] If IPTables is running, allow Samba ports.
For "-I INPUT 5" section below, Replace it to your own environment.
[root@smb ~]#
iptables -I INPUT 5 -p tcp -m state --state NEW -m multiport --dports 139,445 -j ACCEPT

[root@smb ~]#
iptables -I INPUT 5 -p udp -m state --state NEW -m udp --dport 137 -j ACCEPT

[3] If SELinux is enabled, change SELinux context.
[root@smb ~]#
setsebool -P samba_enable_home_dirs on

[root@smb ~]#
restorecon -R /home/security

[4] It's the way to access to the shared directory from Windows clients. This example is on Windows 10.
Select [My Computer] - [Map Network Drive].
[5] Specify the shared folder's place in Folder section like example and Click 'Finish' button to enter.
[6] Authentication is required. Input the one set in [1].
[7] Just accessed.
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