ここでは、squidをNTLM認証に対応させるための設定をします。
（１）必要なパッケージをインストールする。
[root@example ~]# yum -y install samba samba-winbind samba-common krb5-libs pam_krb5
（２）hostsにADサーバを追加する。
[root@example ~]# vi /etc/hosts 192.168.0.98 kurobuti-ad-server.kurobuti.local # 追加※ADサーバの名前解決ができない場合のみに追加する。
（３）ADサーバにProxyサーバを登録する。
[root@example ~]# authconfig --update --enablewinbind --enablekrb5 --enablewinbindauth \ --krb5realm=KUROBUTI.LOCAL --krb5kdc=kurobuti-ad-server.kurobuti.local \ --krb5adminserver=kurobuti-ad-server.kurobuti.local --smbsecurity=ads \ --smbrealm=KUROBUTI.LOCAL --winbindtemplateshell=/sbin/nologin \ --smbidmapuid="16777216-33554431" --smbidmapgid="16777216-33554431" \ --krb5kdc=kurobuti-ad-server.kurobuti.local --smbworkgroup=KUROBUTI \ --winbindjoin=Administrator --smbservers=kurobuti-ad-server.kurobuti.local \ --winbindseparator=+ authconfig: Authentication module /lib64/security/pam_fprintd.so is missing. Authentication process might not work correctly. [/usr/bin/net join -w KUROBUTI -S kurobuti-ad-server.kurobuti.local -U Administrator] Enter Administrator's password: # ADのAdministratorパスワードを入力 Using short domain name -- KUROBUTI Joined 'EXAMPLE' to realm 'kurobuti.local' No DNS domain configured for example. Unable to perform DNS Update. DNS update failed! Winbind サービスを起動中: [ OK ]
※「authconfig-tui」で設定する場合は下記アドレスを参照してください。
http://www.kurobuti.com/blog/?p=4594
※「authconfig」のヘルプを見る場合。
[root@example ~]# LANG=en_US.UTF8 authconfig
・上記（３）コマンドで変更されるファイルと内容
- /etc/krb5.conf
[logging]
default = FILE:/var/log/krb5libs.log
kdc = FILE:/var/log/krb5kdc.log
admin_server = FILE:/var/log/kadmind.log
[libdefaults]
default_realm = KUROBUTI.LOCAL
dns_lookup_realm = false
dns_lookup_kdc = false
ticket_lifetime = 24h
renew_lifetime = 7d
forwardable = true
[realms]
EXAMPLE.COM = {
kdc = kerberos.example.com
admin_server = kerberos.example.com
}
KUROBUTI.LOCAL = {
kdc = kurobuti-ad-server.kurobuti.local
admin_server = kurobuti-ad-server.kurobuti.local
}
[domain_realm]
.example.com = EXAMPLE.COM
example.com = EXAMPLE.COM
kurobuti.local = KUROBUTI.LOCAL
.kurobuti.local = KUROBUTI.LOCAL
- /etc/samba/smb.conf
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
# here. Samba has a huge number of configurable options (perhaps too
# many!) most of which are not shown in this example
#
# For a step to step guide on installing, configuring and using samba,
# read the Samba-HOWTO-Collection. This may be obtained from:
# http://www.samba.org/samba/docs/Samba-HOWTO-Collection.pdf
#
# Many working examples of smb.conf files can be found in the
# Samba-Guide which is generated daily and can be downloaded from:
# http://www.samba.org/samba/docs/Samba-Guide.pdf
#
# Any line which starts with a ; (semi-colon) or a # (hash)
# is a comment and is ignored. In this example we will use a #
# for commentry and a ; for parts of the config file that you
# may wish to enable
#
# NOTE: Whenever you modify this file you should run the command "testparm"
# to check that you have not made any basic syntactic errors.
#
#---------------
# SELINUX NOTES:
#
# If you want to use the useradd/groupadd family of binaries please run:
# setsebool -P samba_domain_controller on
#
# 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
#
#--------------
#
#======================= Global Settings =====================================
[global]
#--authconfig--start-line--
# Generated by authconfig on 2011/10/10 19:20:29
# DO NOT EDIT THIS SECTION (delimited by --start-line--/--end-line--)
# Any modification may be deleted or altered by authconfig in future
workgroup = KUROBUTI
password server = kurobuti-ad-server.kurobuti.local
realm = KUROBUTI.LOCAL
security = ads
idmap uid = 16777216-33554431
idmap gid = 16777216-33554431
winbind separator = +
template shell = /sbin/nologin
winbind use default domain = false
winbind offline logon = false
#--authconfig--end-line--
# ----------------------- Netwrok Related Options -------------------------
#
# workgroup = NT-Domain-Name or Workgroup-Name, eg: MIDEARTH
#
# server string is the equivalent of the NT Description field
#
# netbios name can be used to specify a server name not tied to the hostname
#
# Interfaces lets you configure Samba to use multiple interfaces
# If you have multiple network interfaces then you can list the ones
# you want to listen on (never omit localhost)
#
# Hosts Allow/Hosts Deny lets you restrict who can connect, and you can
# specifiy it as a per share option as well
#
; workgroup = MYGROUP
server string = Samba Server Version %v
; netbios name = MYSERVER
; interfaces = lo eth0 192.168.12.2/24 192.168.13.2/24
; hosts allow = 127. 192.168.12. 192.168.13.
# --------------------------- Logging Options -----------------------------
#
# Log File let you specify where to put logs and how to split them up.
#
# Max Log Size let you specify the max size log files should reach
# logs split per machine
log file = /var/log/samba/log.%m
# max 50KB per log file, then rotate
max log size = 50
# ----------------------- Standalone Server Options ------------------------
#
# Scurity can be set to user, share(deprecated) or server(deprecated)
#
# Backend to store user information in. New installations should
# use either tdbsam or ldapsam. smbpasswd is available for backwards
# compatibility. tdbsam requires no further configuration.
; security = user
passdb backend = tdbsam
# ----------------------- Domain Members Options ------------------------
#
# Security must be set to domain or ads
#
# Use the realm option only with security = ads
# Specifies the Active Directory realm the host is part of
#
# Backend to store user information in. New installations should
# use either tdbsam or ldapsam. smbpasswd is available for backwards
# compatibility. tdbsam requires no further configuration.
#
# Use password server option only with security = server or if you can't
# use the DNS to locate Domain Controllers
# The argument list may include:
# password server = My_PDC_Name [My_BDC_Name] [My_Next_BDC_Name]
# or to auto-locate the domain controller/s
# password server = *
; 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
#
# Backend to store user information in. New installations should
# use either tdbsam or ldapsam. smbpasswd is available for backwards
# compatibility. tdbsam requires no further configuration.
#
# Domain Master specifies Samba to be the Domain Master Browser. This
# allows Samba to collate browse lists between subnets. Don't use this
# if you already have a Windows NT domain controller doing this job
#
# Domain Logons let Samba be a domain logon server for Windows workstations.
#
# Logon Scrpit let yuou specify a script to be run at login time on the client
# You need to provide it in a share called NETLOGON
#
# Logon Path let you specify where user profiles are stored (UNC path)
#
# Various scripts can be used on a domain controller or stand-alone
# machine to add or delete corresponding unix accounts
#
; security = user
; passdb backend = tdbsam
; domain master = yes
; domain logons = yes
# the login script name depends on the machine name
; logon script = %m.bat
# the login script name depends on the unix user used
; logon script = %u.bat
; logon path = \\%L\Profiles\%u
# disables profiles support by specifing an empty path
; logon path =
; 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 ----------------------------
#
# set local master to no if you don't want Samba to become a master
# browser on your network. Otherwise the normal election rules apply
#
# OS Level determines the precedence of this server in master browser
# elections. The default value should be reasonable
#
# Preferred Master causes Samba to force a local browser election on startup
# and gives it a slightly higher chance of winning the election
; local master = no
; os level = 33
; preferred master = yes
#----------------------------- Name Resolution -------------------------------
# Windows Internet Name Serving Support Section:
# Note: Samba can be either a WINS Server, or a WINS Client, but NOT both
#
# - WINS Support: Tells the NMBD component of Samba to enable it's WINS Server
#
# - WINS Server: Tells the NMBD components of Samba to be a WINS Client
#
# - WINS Proxy: Tells Samba to answer 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 - tells Samba whether or not to try to resolve NetBIOS names
# via DNS nslookups.
; wins support = yes
; wins server = w.x.y.z
; wins proxy = yes
; dns proxy = yes
# --------------------------- Printing Options -----------------------------
#
# Load Printers let you load automatically the list of printers rather
# than setting them up individually
#
# Cups Options let you pass the cups libs custom options, setting it to raw
# for example will let you use drivers on your Windows clients
#
# Printcap Name let you specify an alternative printcap file
#
# You can choose a non default printing system using the Printing option
load printers = yes
cups options = raw
; printcap name = /etc/printcap
#obtain list of printers automatically on SystemV
; printcap name = lpstat
; printing = cups
# --------------------------- Filesystem Options ---------------------------
#
# The following options can be uncommented if the filesystem supports
# Extended Attributes and they are enabled (usually by the mount option
# user_xattr). Thess options will let the admin store the DOS attributes
# in an EA and make samba not mess with the permission bits.
#
# Note: these options can also be set just per share, setting them in global
# 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 = no
guest ok = no
writable = no
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 = no
; share modes = no
# 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 = no
; guest ok = yes
# A publicly accessible directory, but read only, except for people in
# the "staff" group
; [public]
; comment = Public Stuff
; path = /home/samba
; public = yes
; writable = yes
; printable = no
; write list = +staff
- /etc/nsswitch.conf
# # /etc/nsswitch.conf # # An example Name Service Switch config file. This file should be # sorted with the most-used services at the beginning. # # The entry '[NOTFOUND=return]' means that the search for an # entry should stop if the search in the previous entry turned # up nothing. Note that if the search failed due to some other reason # (like no NIS server responding) then the search continues with the # next entry. # # Valid entries include: # # nisplus Use NIS+ (NIS version 3) # nis Use NIS (NIS version 2), also called YP # dns Use DNS (Domain Name Service) # files Use the local files # db Use the local database (.db) files # compat Use NIS on compat mode # hesiod Use Hesiod for user lookups # [NOTFOUND=return] Stop searching if not found so far # # To use db, put the "db" in front of "files" for entries you want to be # looked up first in the databases # # Example: #passwd: db files nisplus nis #shadow: db files nisplus nis #group: db files nisplus nis passwd: files winbind shadow: files winbind group: files winbind #hosts: db files nisplus nis dns hosts: files dns # Example - obey only what nisplus tells us... #services: nisplus [NOTFOUND=return] files #networks: nisplus [NOTFOUND=return] files #protocols: nisplus [NOTFOUND=return] files #rpc: nisplus [NOTFOUND=return] files #ethers: nisplus [NOTFOUND=return] files #netmasks: nisplus [NOTFOUND=return] files bootparams: nisplus [NOTFOUND=return] files ethers: files netmasks: files networks: files protocols: files rpc: files services: files netgroup: files publickey: nisplus automount: files aliases: files nisplus
（４）ADを認識しているか、また接続できているかを確認する。
[root@example ~]# net ads info LDAP server: 192.168.0.98 LDAP server name: kurobuti-ad-server.kurobuti.local Realm: KUROBUTI.LOCAL Bind Path: dc=KUROBUTI,dc=LOCAL LDAP port: 389 Server time: 月, 10 10月 2011 19:21:07 JST KDC server: 192.168.0.98 Server time offset: 0 [root@example ~]# wbinfo -t checking the trust secret for domain KUROBUTI via RPC calls succeeded
（５）ADに登録されているユーザー、グループ情報を取得する。
[root@example ~]# wbinfo -u KUROBUTI+administrator KUROBUTI+guest KUROBUTI+krbtgt KUROBUTI+test_user [root@example ~]# wbinfo -g KUROBUTI+domain computers KUROBUTI+domain controllers KUROBUTI+schema admins KUROBUTI+enterprise admins KUROBUTI+cert publishers KUROBUTI+domain admins KUROBUTI+domain users KUROBUTI+domain guests KUROBUTI+group policy creator owners KUROBUTI+ras and ias servers KUROBUTI+allowed rodc password replication group KUROBUTI+denied rodc password replication group KUROBUTI+read-only domain controllers KUROBUTI+enterprise read-only domain controllers KUROBUTI+dnsadmins KUROBUTI+dnsupdateproxy
（６）ADに登録されているユーザーで認証してみる。
[root@example ~]# wbinfo --authenticate=test_user%PassWord123 plaintext password authentication failed Could not authenticate user test_user%PassWord123 with plaintext password challenge/response password authentication succeeded
※ハイライト部分が失敗するのは、NTLMv2は暗号化（ハッシュ化）して扱うためだと思われます。（たぶん・・・）
※チャレンジレスポンスは成功しています。
（７）squidの設定を修正する。
[root@example ~]# vi /etc/squid/squid.conf #--以下を先頭にでも追加--# # NTLM authentication settings. auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param ntlm children 5 auth_param ntlm keep_alive on auth_param basic program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic auth_param basic children 5 auth_param basic realm Squid proxy-caching web server auth_param basic credentialsttl 2 hours acl password proxy_auth REQUIRED #--ここまで--# http_access allow localnet ↓ # 変更 http_access allow password localnet
※ntlm認証で失敗した時ようにbasicも設定しておきます。
※squid-3.1.4以上を利用する場合「auth_param ntlm keep_alive off」にしないと複数回認証（クライアントがAD認証していない場合）が求められます。
（８）squidユーザーにwbprivグループを追加する。
[root@example ~]# usermod -G wbpriv squid [root@example ~]# id squid uid=23(squid) gid=23(squid) 所属グループ=23(squid),88(wbpriv)※「cache_effective_group」で指定した方が確実かも。
（９）squidをリロードする。
[root@example ~]# /etc/rc.d/init.d/squid reload
（１０）各種サービスを起動する。
[root@example squid]# /etc/rc.d/init.d/smb start SMB サービスを起動中: [ OK ] [root@example squid]# chkconfig smb on [root@example squid]# chkconfig winbind on [root@example squid]# chkconfig squid on
（１１）試しにクライアントマシンからProxyサーバ経由でWebページを閲覧する時に、認証が出るか確認する。また、認証が出た際、ユーザー名、パスワードを入力して認証が通ることを確認する。
ユーザー名： KUROBUTI\test_user
パスワード： ********（設定したパスワード）
