Tag Archives: LDAP

UserAccountControl Attribute/Flag Values

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Here is a comprehensive list of UserAccountControl attribute/flag values I have come across when working on LDAP projects.

Property Flag Value In Hexadecimal Value In Decimal Not Officially Documented
SCRIPT 0x0001 1  
ACCOUNTDISABLE 0x0002 2  
HOMEDIR_REQUIRED 0x0008 8  
LOCKOUT 0x0010 16  
PASSWD_NOTREQD 0x0020 32  
PASSWD_CANT_CHANGE 0x0040 64  
ENCRYPTED_TEXT_PWD_ALLOWED 0x0080 128  
TEMP_DUPLICATE_ACCOUNT 0x0100 256  
NORMAL_ACCOUNT 0x0200 512  
Disabled Account 0x0202 514 x
Enabled, Password Not Required 0x0220 544 x
Disabled, Password Not Required 0x0222 546 x
INTERDOMAIN_TRUST_ACCOUNT 0x0800 2048  
WORKSTATION_TRUST_ACCOUNT 0x1000 4096  
SERVER_TRUST_ACCOUNT 0x2000 8192  
DONT_EXPIRE_PASSWORD 0x10000 65536  
Enabled, Password Doesn't Expire 0x10200 66048 x
Disabled, Password Doesn't Expire 0x10202 66050 x
Disabled, Password Doesn't Expire & Not Required 0x10222 66082 x
MNS_LOGON_ACCOUNT 0x20000 131072  
SMARTCARD_REQUIRED 0x40000 262144  
Enabled, Smartcard Required 0x40200 262656 x
Disabled, Smartcard Required 0x40202 262658 x
Disabled, Smartcard Required, Password Not Required 0x40222 262690 x
Disabled, Smartcard Required, Password Doesn't Expire 0x50202 328194 x
Disabled, Smartcard Required, Password Doesn't Expire & Not Required 0x50222 328226 x
TRUSTED_FOR_DELEGATION 0x80000 524288  
Domain controller 0x82000 532480  
NOT_DELEGATED 0x100000 1048576  
USE_DES_KEY_ONLY 0x200000 2097152  
DONT_REQ_PREAUTH 0x400000 4194304  
PASSWORD_EXPIRED 0x800000 8388608  
TRUSTED_TO_AUTH_FOR_DELEGATION 0x1000000 16777216  
PARTIAL_SECRETS_ACCOUNT 0x04000000 67108864  

Property flag descriptions (Copied from KB Article)

  • SCRIPT - The logon script will be run.
  • ACCOUNTDISABLE - The user account is disabled.
  • HOMEDIR_REQUIRED - The home folder is required.
  • PASSWD_NOTREQD - No password is required.
  • PASSWD_CANT_CHANGE - The user cannot change the password. This is a permission on the user's object. For information about how to programmatically set this permission, visit the following Web site:
  • ENCRYPTED_TEXT_PASSWORD_ALLOWED - The user can send an encrypted password.
  • TEMP_DUPLICATE_ACCOUNT - This is an account for users whose primary account is in another domain. This account provides user access to this domain, but not to any domain that trusts this domain. This is sometimes referred to as a local user account.
  • NORMAL_ACCOUNT - This is a default account type that represents a typical user.
  • INTERDOMAIN_TRUST_ACCOUNT - This is a permit to trust an account for a system domain that trusts other domains.
  • WORKSTATION_TRUST_ACCOUNT - This is a computer account for a computer that is running Microsoft Windows NT 4.0 Workstation, Microsoft Windows NT 4.0 Server, Microsoft Windows 2000 Professional, or Windows 2000 Server and is a member of this domain.
  • SERVER_TRUST_ACCOUNT - This is a computer account for a domain controller that is a member of this domain.
  • DONT_EXPIRE_PASSWD - Represents the password, which should never expire on the account.
  • MNS_LOGON_ACCOUNT - This is an MNS logon account.
  • SMARTCARD_REQUIRED - When this flag is set, it forces the user to log on by using a smart card.
  • TRUSTED_FOR_DELEGATION - When this flag is set, the service account (the user or computer account) under which a service runs is trusted for Kerberos delegation. Any such service can impersonate a client requesting the service. To enable a service for Kerberos delegation, you must set this flag on the userAccountControl property of the service account.
  • NOT_DELEGATED - When this flag is set, the security context of the user is not delegated to a service even if the service account is set as trusted for Kerberos delegation.
  • USE_DES_KEY_ONLY - (Windows 2000/Windows Server 2003) Restrict this principal to use only Data Encryption Standard (DES) encryption types for keys.
  • DONT_REQUIRE_PREAUTH - (Windows 2000/Windows Server 2003) This account does not require Kerberos pre-authentication for logging on.
  • PASSWORD_EXPIRED - (Windows 2000/Windows Server 2003) The user's password has expired.
  • TRUSTED_TO_AUTH_FOR_DELEGATION - (Windows 2000/Windows Server 2003) The account is enabled for delegation. This is a security-sensitive setting. Accounts that have this option enabled should be tightly controlled. This setting lets a service that runs under the account assume a client's identity and authenticate as that user to other remote servers on the network.
  • PARTIAL_SECRETS_ACCOUNT - (Windows Server 2008/Windows Server 2008 R2) The account is a read-only domain controller (RODC). This is a security-sensitive setting. Removing this setting from an RODC compromises security on that server.

UserAccountControl values

These are the default UserAccountControl values for the certain objects:

  • Typical user : 0x200 (512)
  • Domain controller : 0x82000 (532480)
  • Workstation/server: 0x1000 (4096)

Official Microsoft KB Article: http://support.microsoft.com/kb/305144

Pulling Active Directory account info via alias email address

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I have been working on a PHP project that interfaces with active directory through LDAP.  I noticed that some accounts weren't being resolved via email address.  I thought, hmm this is strange...  After a few hours, I finally figured out that the issue was due to an alias email address.  By default, the "mail" attribute only has the main email address listed, so any alias addresses will not be searched upon lookup.

Solution?

Use this query to select an item from AD via its alias email address:

(proxyAddresses=smtp:[email protected])