我有一台运行 RHEL 的服务器。网络中有三个工作站：两个 Linux（RHEL）和一个 Windows 7。我使用 Samba 与工作站共享存储设备（连接到服务器）。一年多来，这一直很顺利。但是，昨天更新服务器后，我无法访问 Windows 工作站上的共享文件夹。
具体来说，Windows 不再识别密码。当我单击“映射网络驱动器”，输入共享文件夹的路径并输入我的凭据时，Windows 告诉我“指定的网络密码不正确”。但我可以在两个 Linux 工作站上访问共享文件夹。
以下是我检查并确认的内容：
- 确保 LAN Manager 身份验证级别设置为“发送 LM 和 NTLM - 如果协商则使用 NTLMv2 会话安全性。”[来自这里]
- 确保我可以访问两个 Linux 工作站上的共享文件夹
- 创建了一个新的共享文件夹，并且可以在两个 Linux 工作站上访问该文件夹
- 确保我可以从我的 Windows 工作站 ping 服务器
- 确保所有机器上的日期和时间正确
- 尝试重新启动一切（并希望问题消失）
预期行为：我希望 Windows 访问共享文件夹
没有发生什么：Windows 无法访问共享文件夹
我想重申一下，在更新之前（两天前），该文件夹是可以访问的。我当前的 Samba 版本是 4.6.2，RHEL 是 7.4。
以下是 smb.conf 文件中的部分内容（完整文件如下）：
#======================= Global Settings =====================================
[global]
# ----------------------- Network-Related Options -------------------------
workgroup = MSHOME
server string = Samba Server Version %v
# ----------------------- Standalone Server Options ------------------------
security = user
passdb backend = tdbsam
[MBIAL_STORAGE]
path = /run/media/MBIAL/MBIAL_STORAGE
guest ok = yes
browseable = yes
writable = yes
valid_users = MBIAL
# write list = test
# valid users = test
其中 MBIAL_STORAGE 是共享文件夹的名称。Linux 工作站使用 smb://IP_ADDRESS/mbial_storage 访问此文件夹，以 MBIAL 为用户名，以 MSHOME 为工作组。我尝试将 Windows MSHOME\MBIAL 作为用户名，但效果不佳。
这是完整的 smb.conf 文件：
# This is the main Samba configuration file. For detailed information about the
# options listed here, refer to the smb.conf(5) manual page. Samba has a huge
# number of configurable options, most of which are not shown in this example.
#
# The Official Samba 3.2.x HOWTO and Reference Guide contains step-by-step
# guides for installing, configuring, and using Samba:
# http://www.samba.org/samba/docs/Samba-HOWTO-Collection.pdf
#
# The Samba-3 by Example guide has working examples for smb.conf. This guide is
# generated daily: http://www.samba.org/samba/docs/Samba-Guide.pdf
#
# In this file, lines starting with a semicolon (;) or a hash (#) are
# comments and are ignored. This file uses hashes to denote commentary and
# semicolons for parts of the file you may wish to configure.
#
# Note: Run the "testparm" command after modifying this file to check for basic
# syntax errors.
#
#---------------
# Security-Enhanced Linux (SELinux) Notes:
#
# Turn the samba_domain_controller Boolean on to allow Samba to use the useradd
# and groupadd family of binaries. Run the following command as the root user to
# turn this Boolean on:
# setsebool -P samba_domain_controller on
#
# Turn the samba_enable_home_dirs Boolean on if you want to share home
# directories via Samba. Run the following command as the root user to turn this
# Boolean on:
# setsebool -P samba_enable_home_dirs on
#
# If you create a new directory, such as a new top-level directory, label it
# with samba_share_t so that SELinux allows Samba to read and write to it. Do
# not label system directories, such as /etc/ and /home/, with samba_share_t, as
# such directories should already have an SELinux label.
#
# Run the "ls -ldZ /path/to/directory" command to view the current SELinux
# label for a given directory.
#
# 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
#
# Changes made via chcon are lost when the file system is relabeled or commands
# such as restorecon are run.
#
# Use the samba_export_all_ro or samba_export_all_rw Boolean to share system
# directories. To share such directories and only allow read-only permissions:
# setsebool -P samba_export_all_ro on
# To share such directories and allow read and write permissions:
# setsebool -P samba_export_all_rw on
#
# To run scripts (preexec/root prexec/print command/...), copy them to the
# /var/lib/samba/scripts/ directory so that SELinux will allow smbd to run them.
# Note that if you move the scripts to /var/lib/samba/scripts/, they retain
# their existing SELinux labels, which may be labels that SELinux does not allow
# smbd to run. Copying the scripts will result in the correct SELinux labels.
# Run the "restorecon -R -v /var/lib/samba/scripts" command as the root user to
# apply the correct SELinux labels to these files.
#
#--------------
#
#======================= Global Settings =====================================
[global]
# ----------------------- Network-Related Options -------------------------
#
# workgroup = the Windows NT domain name or workgroup name, for example, MYGROUP.
#
# server string = the equivalent of the Windows NT Description field.
#
# netbios name = used to specify a server name that is not tied to the hostname.
#
# interfaces = used to configure Samba to listen on multiple network interfaces.
# If you have multiple interfaces, you can use the "interfaces =" option to
# configure which of those interfaces Samba listens on. Never omit the localhost
# interface (lo).
#
# hosts allow = the hosts allowed to connect. This option can also be used on a
# per-share basis.
#
# hosts deny = the hosts not allowed to connect. This option can also be used on
# a per-share basis.
#
# max protocol = used to define the supported protocol. The default is NT1. You
# can set it to SMB2 if you want experimental SMB2 support.
#
workgroup = MSHOME
server string = Samba Server Version %v
; netbios name = MYSERVER
; interfaces = lo eth0 192.168.12.2/24 192.168.13.2/24 10.11.1.152 10.11.1.151 127.0.0.1
; hosts allow = 127. 192.168.12. 192.168.13. 10.11.1.152 10.11.1.151
; max protocol = SMB2
# --------------------------- Logging Options -----------------------------
#
# log file = specify where log files are written to and how they are split.
#
# max log size = specify the maximum size log files are allowed to reach. Log
# files are rotated when they reach the size specified with "max log size".
#
# log files split per-machine:
log file = /var/log/samba/log.%m
# maximum size of 50KB per log file, then rotate:
max log size = 50
debuglevel = 7
# ----------------------- Standalone Server Options ------------------------
#
# security = the mode Samba runs in. This can be set to user, share
# (deprecated), or server (deprecated).
#
# passdb backend = the backend used to store user information in. New
# installations should use either tdbsam or ldapsam. No additional configuration
# is required for tdbsam. The "smbpasswd" utility is available for backwards
# compatibility.
#
security = user
passdb backend = tdbsam
# ----------------------- Domain Members Options ------------------------
#
# security = must be set to domain or ads.
#
# passdb backend = the backend used to store user information in. New
# installations should use either tdbsam or ldapsam. No additional configuration
# is required for tdbsam. The "smbpasswd" utility is available for backwards
# compatibility.
#
# realm = only use the realm option when the "security = ads" option is set.
# The realm option specifies the Active Directory realm the host is a part of.
#
# password server = only use this option when the "security = server"
# option is set, or if you cannot use DNS to locate a Domain Controller. The
# argument list can include My_PDC_Name, [My_BDC_Name], and [My_Next_BDC_Name]:
#
# password server = My_PDC_Name [My_BDC_Name] [My_Next_BDC_Name]
#
# Use "password server = *" to automatically locate Domain Controllers.
; security = domain
; passdb backend = tdbsam
; realm = MY_REALM
; password server = <NT-Server-Name>
# ----------------------- Domain Controller Options ------------------------
#
# security = must be set to user for domain controllers.
#
# passdb backend = the backend used to store user information in. New
# installations should use either tdbsam or ldapsam. No additional configuration
# is required for tdbsam. The "smbpasswd" utility is available for backwards
# compatibility.
#
# domain master = specifies Samba to be the Domain Master Browser, allowing
# Samba to collate browse lists between subnets. Do not use the "domain master"
# option if you already have a Windows NT domain controller performing this task.
#
# domain logons = allows Samba to provide a network logon service for Windows
# workstations.
#
# logon script = specifies a script to run at login time on the client. These
# scripts must be provided in a share named NETLOGON.
#
# logon path = specifies (with a UNC path) where user profiles are stored.
#
#
; security = user
; passdb backend = tdbsam
; domain master = yes
; domain logons = yes
# the following login script name is determined by the machine name
# (%m):
; logon script = %m.bat
# the following login script name is determined by the UNIX user used:
; logon script = %u.bat
; logon path = \\%L\Profiles\%u
# use an empty path to disable profile support:
; logon path =
# various scripts can be used on a domain controller or a stand-alone
# machine to add or delete corresponding UNIX accounts:
; add user script = /usr/sbin/useradd "%u" -n -g users
; add group script = /usr/sbin/groupadd "%g"
; add machine script = /usr/sbin/useradd -n -c "Workstation (%u)" -M -d /nohome -s /bin/false "%u"
; delete user script = /usr/sbin/userdel "%u"
; delete user from group script = /usr/sbin/userdel "%u" "%g"
; delete group script = /usr/sbin/groupdel "%g"
# ----------------------- Browser Control Options ----------------------------
#
# local master = when set to no, Samba does not become the master browser on
# your network. When set to yes, normal election rules apply.
#
# os level = determines the precedence the server has in master browser
# elections. The default value should be reasonable.
#
# preferred master = when set to yes, Samba forces a local browser election at
# start up (and gives itself a slightly higher chance of winning the election).
#
; local master = no
; os level = 33
; preferred master = yes
#----------------------------- Name Resolution -------------------------------
#
# This section details the support for the Windows Internet Name Service (WINS).
#
# Note: Samba can be either a WINS server or a WINS client, but not both.
#
# wins support = when set to yes, the NMBD component of Samba enables its WINS
# server.
#
# wins server = tells the NMBD component of Samba to be a WINS client.
#
# wins proxy = when set to yes, Samba answers name resolution queries on behalf
# of a non WINS capable client. For this to work, there must be at least one
# WINS server on the network. The default is no.
#
# dns proxy = when set to yes, Samba attempts to resolve NetBIOS names via DNS
# nslookups.
; wins support = yes
; wins server = w.x.y.z
; wins proxy = yes
; dns proxy = yes
# --------------------------- Printing Options -----------------------------
#
# The options in this section allow you to configure a non-default printing
# system.
#
# load printers = when set you yes, the list of printers is automatically
# loaded, rather than setting them up individually.
#
# cups options = allows you to pass options to the CUPS library. Setting this
# option to raw, for example, allows you to use drivers on your Windows clients.
#
# printcap name = used to specify an alternative printcap file.
#
load printers = no
cups options = raw
; printcap name = /etc/printcap
# obtain a list of printers automatically on UNIX System V systems:
; printcap name = lpstat
; printing = cups
# --------------------------- File System Options ---------------------------
#
# The options in this section can be un-commented if the file system supports
# extended attributes, and those attributes are enabled (usually via the
# "user_xattr" mount option). These options allow the administrator to specify
# that DOS attributes are stored in extended attributes and also make sure that
# Samba does not change the permission bits.
#
# Note: These options can be used on a per-share basis. Setting them globally
# (in the [global] section) makes them the default for all shares.
; map archive = no
; map hidden = no
; map read only = no
; map system = no
; store dos attributes = yes
#============================ Share Definitions ==============================
[homes]
comment = Home Directories
browseable = no
writable = yes
; valid users = %S
; valid users = MYDOMAIN\%S
[printers]
comment = All Printers
path = /var/spool/samba
browseable = yes
guest ok = no
writable = yes
printable = yes
# Un-comment the following and create the netlogon directory for Domain Logons:
; [netlogon]
; comment = Network Logon Service
; path = /var/lib/samba/netlogon
; guest ok = yes
; writable = yes
; share modes = yes
# Un-comment the following to provide a specific roving profile share.
# The default is to use the user's home directory:
; [Profiles]
; path = /var/lib/samba/profiles
; browseable = yes
; guest ok = yes
[MBIAL_STORAGE]
path = /run/media/MBIAL/MBIAL_STORAGE
guest ok = yes
browseable = yes
writable = yes
valid_users = MBIAL
# write list = test
# valid users = test
非常感谢您对此事的任何见解。我希望这只是我忽略的一件非常琐碎和愚蠢的事情！
答案1
海报的解决方案是将 LAN 管理器身份验证级别从 更改Send NTLMv2 response only为Send LM & NTLM - use NTLMv2 session security if negotiated。
显然，Samba 与 Windows 的会话安全协商管理不善，因此他们无法就密码算法达成一致。一旦发布者指定了安全方法，一切就都奏效了。
至于为什么会发生这种情况 - 我能想到的最佳答案是，这是由于 Linux 和 Windows 的 SMB 协议实现之间存在一些未知的不兼容性造成的
[旧答案]
在 W7 客户端上尝试此操作：
在本地组策略编辑器中，转到：
本地计算机策略->计算机配置->Windows 设置->安全设置->本地策略->安全选项
查找名为 的策略
Microsoft network client: Digitally sign communications (always)。
如果已启用，请将其更改为禁用。请务必重新启动计算机以使更改生效，因为在策略编辑器中按“应用”是不够的。
附注：上次我外部化 Samba 共享时使用了以下设置。尝试一下，如果问题解决了，则逐一修改它们，直到遇到问题为止：
path = /my/share/path
available = yes
browsable = yes
public = yes
read only = no
writable = yes