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linux——SMB文件共享及应用实例

时间:2019-08-07 11:42:06来源:IT技术作者:seo实验室小编阅读:57次「手机版」
 

smb

SMB文件共享

Samba是在linux和UNIX系统上实现SMB协议的一个免费软件,由服务器及客户端程序构成。SMB(Server messages Block,信息服务块)是一种在局域网上共享文件和打印机的一种通信协议,它为局域网内的不同计算机之间提供文件及打印机等资源的共享服务。SMB协议是客户机/服务器型协议,客户机通过该协议可以访问服务器上的共享文件系统、打印机及其他资源。通过设置”NetBiOS over TCP/IP”使得Samba不但能与局域网络主机分享资源,还能与全世界的电脑分享资源。


CIFS协议

1.什么是ciFS协议

CIFS 使用客户/服务器模式。客户程序请求远在服务器上的服务器程序为它提供服务,服务器获得请求并返回响应。CIFS是公共的或开放的SMB协议版本,像SMB协议一样,CIFS在高层运行,而不像TCP/ip协议那样运行在底层。CIFS可以看做是应用程序协议如文件传输协议和超文本传输协议的一个实现。

2.CIFS的功能

1.访问服务器本地文件并读写这些文件

2.与其它用户一起共享一些文件块

实验前提:重置两个虚拟机,配置yum源,
主机名:
1.client.example(客户端)
2.server.example(服务端)

一、安装smb服务并访问

服务器端:
[root@server ~]# yum search samba  #查找smb文件共享服务所需软件
Loaded plugins: langpacks
============================== N/S matched: samba ==============================
samba-client.x86_64 : Samba client programs
samba-common.x86_64 : Files used by both Samba servers and clients
samba-libs.i686 : Samba libraries
samba-libs.x86_64 : Samba libraries
samba-Python.x86_64 : Samba Python libraries
samba-winbind.x86_64 : Samba winbind
samba-winbind-modules.i686 : Samba winbind modules
samba-winbind-modules.x86_64 : Samba winbind modules
samba.x86_64 : Server and Client software to interoperate with windows machines

  Name and summary matches only, use "search all" for everything.
[root@server ~]# yum install samba-client.x86_64 samba-common.x86_64 samba.x86_64 -y
Loaded plugins: langpacks
Usage: yum [options] commaND

List of Commands:

check          Check for problems in the rpmdb
check-update   Check for available package updates
[root@server ~]# systemctl start smb
[root@server ~]# systemctl enable smb
Ln-s'/usr/lib/systemd/system/smb.service' '/etc/systemd/system/multi-user.target.wants/smb.service'
[root@server ~]# systemctl stop firewalld
[root@server ~]# systemctl disable firewalld
rm '/etc/systemd/system/basic.target.wants/firewalld.service'
rm '/etc/systemd/system/dbus-org.fedoraproject.FirewallD1.service'
[root@server ~]# netstat -antlupe | grep smb
tcp        0      0 0.0.0.0:445             0.0.0.0:*               LISTEN      0          68632      3222/smbd           
tcp        0      0 0.0.0.0:139             0.0.0.0:*               LISTEN      0          68633      3222/smbd           
tcp6       0      0 :::445                  :::*                    LISTEN      0          68630      3222/smbd           
tcp6       0      0 :::139                  :::*                    LISTEN      0          68631      3222/smbd 
客户端访问:
[root@client ~]# yum install samba-client.x86_64  -y
Loaded plugins: langpacks
Resolving Dependencies
--> Running transaction check
---> Package samba-client.x86_64 0:4.1.1-31.el7 will be installed
--> Finished Dependency Resolution

Dependencies resolved
[root@client ~]# smbclient -L //172.25.254.126
Enter root's password:   #无密码
Anonymous login successful
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.1.1)
Anonymous login successful
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]

    Server               Comment
    ---------            -------

    Workgroup            Master
    ---------            -------片

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二、添加本地用户进行访问

服务器端添加用户(只能添加本地真实存在的用户):
[root@server ~]# id student  #查看是否有student用户。
uid=1000(student) gid=1000(student) groups=1000(student),10(wheel)
[root@server ~]# smbpasswd -a student   #添加student到smb服务
New SMB password:
Retype new SMB password:
Added user student.
[root@server ~]# id westos  #无westos用户
id: westos: no such user
[root@server ~]# smbpasswd -a westos  
New SMB password:
Retype new SMB password:
failed to add entry for user westos. #添加不成功
[root@server ~]# useradd westos  #创建westos用户
[root@server ~]# smbpasswd -a westos 
New SMB password:
Retype new SMB password:
Added user westos.               #此时添加成功
[root@server ~]# pdbedit -L  #查看smb服务允许用户
student:1000:Student User
westos:1001: 
[root@server ~]# pdbedit -x student  #删除student用户
[root@server ~]# pdbedit -L
westos:1001:                      #student用户被删除
[root@server ~]# smbpasswd -a student  #重新添加student用户
New SMB password:
Retype new SMB password:
Added user student.
[root@server ~]# pdbedit -L
student:1000:Student User
westos:1001:

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客户端访问:
[root@client ~]# smbclient //172.25.254.126/student -U student
Enter student's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]
smb: \> ls
NT_STATUS_ACCESS_denied listing \*   selinux禁止
smb: \> quit
客户端配置selinux:
[root@server ~]# getsebool  -a | grep smb
smbd_anon_write --> off
[root@server ~]# getsebool  -a | grep samba
samba_create_home_dirs --> off
samba_domain_controller --> off
samba_enable_home_dirs --> off
samba_export_all_ro --> off
samba_export_all_rw --> off
samba_portmAPPer --> off
samba_run_unconfined --> off
samba_share_fusefs --> off
samba_share_nfs --> off
sanlock_use_samba --> off
use_samba_home_dirs --> off
virt_sandbox_use_samba --> off
virt_use_samba --> off
[root@server ~]# setsebool -P samba_enable_home_dirs on
[root@server ~]# 
客户端访问:
[root@client ~]# smbclient //172.25.254.226/student -U student
Enter student's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]
smb: \> ls
  .                                   D        0  Thu Jul 10 19:06:52 2014
  ..                                  D        0  Fri Jun  1 21:49:35 2018
  .bash_logout                        H       18  Wed Jan 29 07:45:18 2014
  .bash_profile                       H      193  Wed Jan 29 07:45:18 2014
  .bashrc                             H      231  Wed Jan 29 07:45:18 2014
  .ssh                               DH        0  Thu Jul 10 18:19:10 2014
  .config                            DH        0  Thu Jul 10 19:06:53 2014

        40913 blocks of size 262144. 28595 blocks available
smb: \> quit

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三、共享文件的查看及客户端上传

客户端:
[root@client ~]# smbclient //172.25.254.226/student -U student
Enter student's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]
smb: \> !ls    #查看的是当前目录内容
anaconda-ks.cfg  Documents  Music     Public     Videos
Desktop      Downloads  Pictures  Templates
smb: \> quit
[root@client ~]# cd /etc/  #进入/etc下
[root@client etc]# smbclient //172.25.254.226/student -U student
Enter student's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]
smb: \> !ls   #显示的为/etc下文件
abrt             hostname          profile.d
adjtime          hosts             protocols
aliases          hosts.allow           pulse
aliases.db       hosts.deny        purple
alsa             hp            qemu-ga
alternatives         idmapd.conf           qemu-kvm
anacrontab       init.d            radvd.conf
asound.conf      inittab           rc0.d
favicon.png      NetworkManager        sudo-ldap.conf
fcoe             networks          sysconfig
festival         nfsmount.conf         sysctl.conf
filesystems      nsswitch.conf         sysctl.d
firewalld        nsswitch.conf.bak     systemd
fonts            ntp               system-release
fprintd.conf         numad.conf        system-release-cpe
fstab            oddjob            terminfo
fuse.conf        oddjobd.conf          tmpfiles.d
gconf            oddjobd.conf.d        trusted-key.key
gcrypt           openldap          tuned
gdbinit          opt               udev
gdbinit.d        os-release        udisks2
gdm          ovirt-guest-agent.conf    unbound
ghostscript      PackageKit        updatedb.conf
gnome-settings-daemon    pam.d             UPower
gnome-vfs-2.0        passwd            USB_modeswitch.conf
gnupg            passwd-           usb_modeswitch.d
GREP_colorS      pbm2ppa.conf          vconsole.conf
groff            pinforc           vimrc
smb: \> put passwd   #上传,只可上传当前目录存在的文件
putting file passwd as \passwd (14.5 kb/s) (average 14.5 kb/s) 


Student用户家目录:
[root@server student]# ls 
Passwd
客户端:
[root@client etc]# cd /bin/
[root@client bin]# smbclient //172.25.254.226/student -U student
Enter student's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]
smb: \> put ls
putting file ls as \ls (38285.2 kb/s) (average 38286.5 kb/s)
Student用户家目录:
[root@server student]# ls
ls  passwd  

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四、共享文件的挂载

临时挂载:
客户端:
[root@client bin]# smbclient -L//172.25.254.226/student -U student
Enter student's password: 
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      Comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.1.1)
    student        Disk     Home Directories   #硬盘可挂载使用
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]

    Server               Comment
    ---------            -------

    Workgroup            Master
    ---------            -------
[root@client bin]# mount //172.25.254.126/student/ /mnt/ -o username=student,password=123
[root@client bin]# df
Filesystem                1K-blocks    Used Available Use% Mounted on
/dev/vda1                  10473900 3182068   7291832  31% /
devtmpfs                     469332       0    469332   0% /dev
tmpfs                        484920     140    484780   1% /dev/shm
tmpfs                        484920   12800    472120   3% /run
tmpfs                        484920       0    484920   0% /sys/fs/cgroup
/dev/mapper/vg0-vo           483670    2339    451840   1% /home
//172.25.254.126/student/  10473900 3157292   7316608  31% /mnt
[root@client bin]# cd /mnt
[root@client mnt]# ls
ls  passwd  
[root@client mnt]# touch file
Student用户家目录:
[root@server student]# ls
file  ls  passwd  
客户端:
[root@client mnt]# rm -fr passwd 
Student用户家目录:
[root@server student]# ls
file  ls  

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永久挂载

方法一:

[root@client mnt]# cd   #退出设备
[root@client ~]# umount /mnt 
[root@client ~]# vim /etc/fstab 
[root@client ~]# cat /etc/fstab 

#
# /etc/fstab
# Created by anaconda on Wed May  7 01:22:57 2014
#
# accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=9bf6b9f7-92ad-441b-848e-0257cbb883d1 /                       xfs     defaults        1 1
/dev/vg0/vo /home   ext4    defaults    0 0
//172.25.254.126/student /mnt cifs defaults,username=student,password=123 0 0
[root@client ~]# mount -a
[root@client ~]# df
Filesystem               1K-blocks    Used Available Use% Mounted on
/dev/vda1                 10473900 3182088   7291812  31% /
devtmpfs                    469332       0    469332   0% /dev
tmpfs                       484920     140    484780   1% /dev/shm
tmpfs                       484920   12800    472120   3% /run
tmpfs                       484920       0    484920   0% /sys/fs/cgroup
/dev/mapper/vg0-vo          483670    2339    451840   1% /home
//172.25.254.126/student  10473900 3157288   7316612  31% /mnt

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方法二:

[root@client ~]# vim /etc/fstab 
[root@client ~]# cat /etc/fstab 

#
# /etc/fstab
# Created by anaconda on Wed May  7 01:22:57 2014
#
# Accessible filesystems, by reference, are maintained under '/dev/disk'
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info
#
UUID=9bf6b9f7-92ad-441b-848e-0257cbb883d1 /                       xfs     defaults        1 1
/dev/vg0/vo /home   ext4    defaults    0 0
#//172.25.254.126/student /mnt cifs defaults,username=student,password=123 0 0     #注释掉
[root@client ~]# umount /mnt
[root@client ~]# vim /etc/rc.d/rc.local
# Source our master variables
. /etc/rht
mount //172.25.254.126/student/ /mnt/ -o username=student,password=123 
#添加内容
[root@client ~]# chmod +x /etc/rc.d/rc.local
[root@client ~]# df
Filesystem         1K-blocks    Used Available Use% Mounted on
/dev/vda1           10473900 3182068   7291832  31% /
devtmpfs              469332       0    469332   0% /dev
tmpfs                 484920     140    484780   1% /dev/shm
tmpfs                 484920   12800    472120   3% /run
tmpfs                 484920       0    484920   0% /sys/fs/cgroup
/dev/mapper/vg0-vo    483670    2339    451840   1% /home
[root@client ~]# reboot
Connection to 172.25.254.126 closed by remote host.
Connection to 172.25.254.126 closed.
[kiosk@foundation26 ~]$ ssh [email protected]
[email protected]'s password: 
Last login: Fri Jun  1 21:20:58 2018 from 172.25.254.26
[root@client ~]# df
Filesystem                1K-blocks    Used Available Use% Mounted on
/dev/vda1                  10473900 3181136   7292764  31% /
devtmpfs                     469332       0    469332   0% /dev
tmpfs                        484920      80    484840   1% /dev/shm
tmpfs                        484920   12752    472168   3% /run
tmpfs                        484920       0    484920   0% /sys/fs/cgroup
/dev/mapper/vg0-vo           483670    2339    451840   1% /home
//172.25.254.226/student/  10473900 3157288   7316612  31% /mnt
[root@client ~]# 

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五、修改用户域名

服务器端:

[root@client ~]# smbclient -L //172.25.254.226
Enter root's password: 
Anonymous login successful
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      Comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.1.1)
Anonymous login successful
Domain=[MYGROUP] OS=[Unix] Server=[Samba 4.1.1]   #默认域名

    Server               Comment
    ---------            -------

    Workgroup            Master
    ---------            -------

[root@server ~]# rpm -qc samba-common  #查看配置文件
/etc/logrotate.d/samba
/etc/samba/lmhosts
/etc/samba/smb.conf
/etc/sysconfig/samba
[root@server ~]# vim /etc/samba/smb.conf 

 89         workgroup = yifan     #将域名改为yifan
 90         server string = Samba Server Version %v
[root@server ~]# systemctl restart smb  #重启服务
客户端:
[root@client ~]# smbclient -L //172.25.254.226
Enter root's password: 
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      Comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.1.1)
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]   #修改成功

    Server               Comment
    ---------            -------

    Workgroup            Master
    ---------            -------

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六、用户黑白名单

#白名单:
服务端:
[root@server ~]# vim /etc/samba/smb.conf 
 92 ;       netbios name = MYSERVER
 93 
 94 ;       interfaces = lo eth0 192.168.12.2/24 192.168.13.2/24
 95 ;       hosts allow = 127. 192.168.12. 192.168.13.
 96 
 97 ;       max protocol = SMB2
 98        hosts allow =172.25.254.226    #用户白名单
[root@server ~]#  systemctl restart smb

客户端ip(172.25.254.126):
[root@client ~]# smbclient -L //172.25.254.126
Enter root's password: 
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      Comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.1.1)
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]

    Server               Comment
    ---------            -------

    Workgroup            Master
    ---------            -------
客户端ip(172.25.254.26):
[kiosk@foundation26 ~]$ smbclient -L //172.25.254.126

Enter kiosk's password: 
protocol negotiation failed: NT_STATUS_INvalid_NETWORK_response

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#黑名单:
服务端:
[root@server ~]# vim /etc/samba/smb.conf 
 92 ;       netbios name = MYSERVER
 93 
 94 ;       interfaces = lo eth0 192.168.12.2/24 192.168.13.2/24
 95 ;       hosts allow = 127. 192.168.12. 192.168.13.
 96 
 97 ;       max protocol = SMB2
 98        hosts deny =172.25.254.226    #用户黑名单
[root@server ~]#  systemctl restart smb

客户端ip(172.25.254.126):
[root@client ~]$ smbclient -L //172.25.254.226

Enter kiosk's password: 
protocol negotiation failed: NT_STATUS_INVALID_NETWORK_RESPONSE
客户端ip(172.25.254.26):
[kiosk@foundation26 ~]# smbclient -L //172.25.254.226
Enter root's password: 
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      Comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.1.1)
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]

    Server               Comment
    ---------            -------

    Workgroup            Master

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七、服务器建立共享目录及设定其属性

服务器建立共享目录

[root@sever ~]# mkdir /westos    #建立目录
[root@sever ~]# vim /etc/samba/smb.conf 
# Set SELinux labels only on files and directories you have created. Use the
# chcon command to temporarily change a label:
# chcon -t samba_share_t /path/to/directory
#提示修改安全上下文

[root@sever ~]# chcon -t samba_share_t /westos   #修改安全安全上下文
                  或者
[root@sever ~]# semanage fcontext -a -t samba_share_t '/westos(/.*)?'

[root@sever ~]# restorecon -RvvF /westos/   #刷新
restorecon reset /westos context unconfined_u:object_r:samba_share_t:s0->system_u:object_r:default_t:s0
[root@sever ~]# chmod 777 /westos/   #给满权限,以被所有用户都可读写

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[DIR] 共享目录名称,可自己设定
comment=westos dir 显示指定的共享目录
path=/westos 所要共享的目录
browseable=no/yes 是否显示目录
writable=no/yes 所有用户对目录是否可写
write list = +/@staff 对staff组可写
write list = staff 对staff用户可写
admin users =staff 此目录的超级用户
(1)browseable=no|yes是否显示目录,该修改不用重启服务
[root@server westos]# vim /etc/samba/smb.conf 
321   [DIR]
322   comment=westos dir
323   path=/westos
324   browseable=no   
327   [mnt]
328   comment=/mnt dir
329   path=/mnt
[root@client ~]# smbclient -L //172.25.254.126/DIR 
Enter root's password: 
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      Comment
    ---------       ----      -------
    IPC$            IPC       IPC Service (Samba Server Version 4.1.1)
    mnt             Disk      /mnt dir
 #此时仅显示/mnt目录,/DIR目录被隐藏。


[root@server westos]# vim /etc/samba/smb.conf 
321   [DIR]
322   comment=westos dir
323   path=/westos
324   browseable=yes  
327   [mnt]
328   comment=/mnt dir
329   path=/mnt
[root@client mnt]# smbclient -L //172.25.254.126/DIR
Enter root's password: 
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]

    Sharename       Type      Comment
    ---------       ----      -------
    DIR             Disk      westos dir
    mnt             Disk      /mnt dir     
 #此时仅显示/mnt目录、/DIR目录。

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此时不显示DIR

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此时显示

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(2)writable = yes|no ##允许所有用户写
[root@sever ~]# vim /etc/samba/smb.conf 
  [DIR]
  comment=westos dir
  path=/westos
  browseable=no
  writable=yes
[root@client etc]# smbclient //172.25.254.126/DIR -U student
Enter student's password: 
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]
smb: \> put passwd
putting file passwd as \passwd (703.1 kb/s) (average 703.1 kb/s)
smb: \> ls
  .                                   D        0  Wed Jun  6 17:36:23 2018
  ..                                  D        0  Wed Jun  6 17:33:36 2018
  passwd                              A     2160  Wed Jun  6 17:36:23 2018

        40913 blocks of size 262144. 26839 blocks available
smb: \> rm passwd 
smb: \> ls
  .                                   D        0  Wed Jun  6 17:36:39 2018
  ..                                  D        0  Wed Jun  6 17:33:36 2018
        40913 blocks of size 262144. 26839 blocks available

[root@sever ~]# vim /etc/samba/smb.conf 
  [DIR]
  comment=westos dir
  path=/westos
  browseable=no
  writable=no
[root@client etc]# smbclient //172.25.254.126/DIR -U student
Enter student's password: 
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]
smb: \> ls
  .                                   D        0  Wed Jun  6 17:36:39 2018
  ..                                  D        0  Wed Jun  6 17:33:36 2018

        40913 blocks of size 262144. 26839 blocks available
smb: \> put passwd
NT_STATUS_ACCESS_DENIED opening remote file \passwd
smb: \> quit

这里写图片描述

可上传

这里写图片描述

这里写图片描述

不可上传

这里写图片描述

(3)write list = student #对student用户可写,注意此writable = yes一定要注释掉。
[root@server ~]# vim /etc/samba/smb.conf
325 #       writable = yes
326         write list = student
[root@server ~]# systemctl restart smb
[root@client ~]# mount //172.25.254.126/DIR /mnt -o username=westos,password=123
[root@client ~]# cd /mnt/
[root@client mnt]# touch 789
touch: cannot touch ‘789’: permission denied
[root@client mnt]# cd
[root@client ~]# umount /mnt/
[root@client ~]# mount //172.25.254.126/DIR /mnt -o username=student,password=123
[root@client ~]# cd /mnt/
[root@client mnt]# touch 256
[root@client mnt]# cd
[root@client ~]# umount /mnt/

这里写图片描述

这里写图片描述

(4)write list = @/+student 对student组用户可写
[root@server ~]# vim /etc/samba/smb.conf
325 #       writable = yes
326         write list = @student
[root@server ~]# systemctl restart smb
[root@sever ~]# id student
uid=1000(student) gid=1000(student) groups=1000(student),10(wheel)
[root@sever ~]# id westos
uid=1001(westos) gid=1001(westos) groups=1001(westos)
[root@server ~]# systemctl restart smb
[root@client ~]# mount //172.25.254.126/DIR /mnt -o username=westos,password=123
[root@client ~]# cd /mnt/
[root@client mnt]# touch 789
touch: cannot touch ‘789’: Permission denied
[root@sever ~]# usermod -G  student  westos
[root@client ~]# mount //172.25.254.126/DIR /mnt -o username=westos,password=123
[root@client ~]# cd /mnt/
[root@client mnt]# touch word

这里写图片描述

这里写图片描述

八、匿名用户允许访问

[root@client ~]# smbclient //172.25.254.126/DIR
Enter root's password: 
Anonymous login successful
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]
tree connect failed: NT_STATUS_ACCESS_DENIED   #访问被拒绝。
[root@server ~]# vim /etc/samba/smb.conf
321   [DIR]
322   comment=westos dir
323   path=/westos
324   browseable=no
325 ;  writable=yes
326   write list =+student
327   guest ok = yes     允许guest用户访问
123         security = user
124         passdb backend = tdbsam
125         map to guest = bad user   将匿名用户映射为guest用户
[root@sever ~]# systemctl restart smb.service 
[root@client ~]# smbclient //172.25.254.126/DIR
Enter root's password: 
Domain=[YIFAN] OS=[Unix] Server=[Samba 4.1.1]
smb: \> ls
  .                                   D        0  Wed Jun  6 18:07:35 2018
  ..                                  D        0  Wed Jun  6 17:33:36 2018
  file                                N        0  Wed Jun  6 17:55:23 2018
  hello                               N        0  Wed Jun  6 17:56:12 2018
  123                                 N        0  Wed Jun  6 17:56:55 2018
  456                                 N        0  Wed Jun  6 17:57:26 2018
  256                                 N        0  Wed Jun  6 17:58:49 2018
  word                                N        0  Wed Jun  6 18:07:35 2018

        40913 blocks of size 262144. 26839 blocks available
smb: \> quit


访问被拒

这里写图片描述

修改配置文件

这里写图片描述

这里写图片描述

访问成功

这里写图片描述

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