按照網上的辦法改了/etc/samba/smb.conf配置文件，結果在Win7裡面就是連不上，後來發現是防火牆的問題。
有兩個命令必須要執行：
1、將SELinux設置成disabled或者permissive
setenforce 0
2、關閉防火牆服務
service iptables stop
若SElinux啟用中，在Windows檔案總管無法連到 Samba 所分享出來的目錄時，
在Linux 中，可執行下列指令：
setsebool -P samba_enable_home_dirs on
參考文件： /etc/samba/smb.conf
#---------------
# SELINUX NOTES:
# 分享群組
# If you want to use the useradd/groupadd family of binaries please run:
# setsebool -P samba_domain_controller on
#
# 分享home目錄
# If you want to share home directories via samba please run:
# setsebool -P samba_enable_home_dirs on
#
# If you create a new directory you want to share you should mark it as
# "samba-share_t" so that selinux will let you write into it.
# Make sure not to do that on system directories as they may already have
# been marked with othe SELinux labels.
#
# Use ls -ldZ /path to see which context a directory has
#
# Set labels only on directories you created!
# To set a label use the following: chcon -t samba_share_t /path
#
# If you need to share a system created directory you can use one of the
# following (read-only/read-write):
# setsebool -P samba_export_all_ro on
# or
# setsebool -P samba_export_all_rw on
#
# If you want to run scripts (preexec/root prexec/print command/...) please
# put them into the /var/lib/samba/scripts directory so that smbd will be
# allowed to run them.
# Make sure you COPY them and not MOVE them so that the right SELinux context
# is applied, to check all is ok use restorecon -R -v /var/lib/samba/scripts
#
#--------------
#
iptables開機自動啟動：
開啟： chkconfig iptables on
關閉： chkconfig iptables off
iptables關閉服務：
開啟： service iptables start
關閉： service iptables stop
chkconfig --level 35 nmb on
chkconfig --level 35 smb on
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如何在Ubuntu 14.04中使用Samba共享文件 http://www.linuxidc.com/Linux/2014-07/104894.htm
VMWare 虛擬機 Ubuntu 雙網卡 訪問 samba 速度 翻倍 http://www.linuxidc.com/Linux/2013-06/85445.htm
Samba文件共享服務器加入Windows Server 2003域 http://www.linuxidc.com/Linux/2013-06/86391.htm
Samba安裝配置 http://www.linuxidc.com/Linux/2013-06/86101.htm
Ubuntu 15.04安裝Samba服務 http://www.linuxidc.com/Linux/2016-03/129201.htm
CentOS 6.2 下Samba 服務的配置 http://www.linuxidc.com/Linux/2013-01/78390.htm
Samba服務器安裝和配置 http://www.linuxidc.com/Linux/2014-12/110459.htm
CentOS部署Samba企業文件共享服務 http://www.linuxidc.com/Linux/2016-06/132609.htm
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Samba 的詳細介紹：請點這裡
Samba 的下載地址：請點這裡