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无法通过 PAM 和 ldap 登录：获取密码失败

tag-icon • tag-icon active-directory openvpn pam pam-ldap
无法通过 PAM 和 ldap 登录：获取密码失败

我正在尝试让 OpenVPN 通过 LDAP 上的 PAM 将用户验证到 Active Directory 服务器。

以下是我的配置文件的相关部分：

/etc/openvpn/server.conf：

# ...
plugin /usr/lib64/openvpn/plugins/openvpn-plugin-auth-pam.so ldap-login

/etc/nslcd.conf：

uri ldap://prod-adc1.mydomain.local
base DC=MyDomain,DC=Local
uid nslcd
gid ldap

/etc/pam.d/ldap 登录：

auth      sufficient  pam_ldap.so minimum_uid=1000 use_first_pass
auth      required    pam_deny.so
password  sufficient  pam_ldap.so minimum_uid=1000 use_first_pass
password  required    pam_deny.so

当我尝试进行身份验证时，我在日志中看到以下内容：

/var/log/安全：

Dec  4 22:22:42 localhost openvpn[25505]: pam_ldap(ldap-login:auth): failed to get password: Authentication failure

/var/log/消息：

Dec  4 22:38:28 localhost openvpn[25504]: 1.2.3.4:37503 TLS: Initial packet from [AF_INET]1.2.3.4:37503, sid=c2d806cc 5c7c7ace
Dec  4 22:38:28 localhost openvpn[25504]: 1.2.3.4:37503 PLUGIN_CALL: POST /usr/lib64/openvpn/plugins/openvpn-plugin-auth-pam.so/PLUGIN_AUTH_USER_PASS_VERIFY status=1
Dec  4 22:38:28 localhost openvpn[25504]: 1.2.3.4:37503 PLUGIN_CALL: plugin function PLUGIN_AUTH_USER_PASS_VERIFY failed with status 1: /usr/lib64/openvpn/plugins/openvpn-plugin-auth-pam.so
Dec  4 22:38:28 localhost openvpn[25504]: 1.2.3.4:37503 TLS Auth Error: Auth Username/Password verification failed for peer
Dec  4 22:38:28 localhost openvpn[25504]: 1.2.3.4:37503 Control Channel: TLSv1.2, cipher TLSv1/SSLv3 DHE-RSA-AES256-GCM-SHA384
Dec  4 22:38:28 localhost openvpn[25504]: 1.2.3.4:37503 Peer Connection Initiated with [AF_INET]1.2.3.4:37503
Dec  4 22:38:31 localhost openvpn[25504]: 1.2.3.4:37503 PUSH: Received control message: 'PUSH_REQUEST'
Dec  4 22:38:31 localhost openvpn[25504]: 1.2.3.4:37503 Delayed exit in 5 seconds
Dec  4 22:38:31 localhost openvpn[25504]: 1.2.3.4:37503 SENT CONTROL [UNDEF]: 'AUTH_FAILED' (status=1)
Dec  4 22:38:36 localhost openvpn[25504]: 1.2.3.4:37503 SIGTERM[soft,delayed-exit] received, client-instance exiting

我是否错误地配置了 PAM？我的登录配置中是否缺少某些内容？

编辑：如果我执行以下操作，我就可以登录：

ldapsearch -h prod-adc1.mydomain.local -b "DC=MyDomain,DC=Local" -x -D "[email protected]" -W

如何将其映射到 PAM LDAP 模块以使 OpenVPN 登录按预期工作？

答案1

看起来您需要使用/etc/nslcd.conf和进行binddn配置bindpw。

看http://arthurdejong.org/nss-pam-ldapd/nslcd.conf.5

希望这可以帮助！

—拜伦

答案2

工作设置示例（授权用户仅有的针对 LDAP 服务器，在示例中我使用的是 OpenLDAP，但此模块也支持 AD - openvpn-auth-ldap.so):

openvpn-服务器.conf：

# Authorization against LDAP
plugin /usr/lib64/openvpn-auth-ldap.so /some/path/auth-ldap.conf

身份验证-ldap.conf：

<LDAP>
  # LDAP server URL
  URL ldap://server.intranet.eko-inwest.com.pl:389

  # Bind DN (If your LDAP server doesn’t support anonymous binds)
  # BindDN uid=administrator,ou=users,dc=x,dc=y
  # BindDN uid=admin,ou=Users,dc=x,dc=y
  # BindDN [email protected]

  # Network timeout (in seconds)
  Timeout 15

  # Enable Start TLS
  TLSEnable       no

  # TLS CA Certificate File
  # TLSCACertFile   /etc/ssl/ca.x.y.crt
</LDAP>

<Authorization>
  # Base DN
  BaseDN "ou=users,dc=x,dc=y"

  # User Search Filter
  #SearchFilter "(uid=%u)"
  #SearchFilter "(&(uid=%u)(objectclass=posixAccount))"
  # For Samba's schema
  SearchFilter "(&(uid=%u)(!(sambaAcctFlags=[DUL        ])))"

  # Require Group Membership
  RequireGroup true

  # Add non-group members to a PF table (disabled)
  # PFTable vpn-users
        <Group>
                # Match full user DN if true, uid only if false
                RFC2307bis      false
                BaseDN          "ou=groups,dc=x,dc=y"

                SearchFilter    "(cn=vpn-users)"
                MemberAttribute memberUid
        </Group>
</Authorization>

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