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Why you need a password policy enforcer for Active Directory

Weak, reused, or non-compliant passwords remain one of the biggest security risks in Active Directory environments. Active Directory Group Policy's password policy tool offers only basic controls, making it difficult for IT admins to enforce strong, organization-wide password standards. Without a robust password policy enforcer, users may create passwords that are easy to guess, violate compliance mandates, or fail to meet internal security requirements.

Like many organizations, you may struggle to find a password policy enforcement solution that offers the flexibility, control, and depth needed to address modern security challenges. You need a comprehensive Active Directory password policy enforcer that supports granular rules, real-time strength checks, and consistent configuration across your network.

Native Windows Active Directory password policy

What are the Active Directory password policy requirements?

  • Minimum password length
  • Minimum password age
  • Maximum password age
  • Password complexity requirements
  • Password history enforcement
  • Reversible encryption for storing passwords

Loopholes in Windows Active Directory password complexity

  • There is no one-size-fits-all Active Directory password policy. Password policies should be customizable to suit different hierarchies, geographical regions, and departments within an organization. However, an Active Directory password policy lacks this flexibility, and it cannot be applied to OUs.
  • When admins reset passwords using the Active Directory Users and Computers (ADUC) console, the native password policy settings cannot be enforced.
  • The ability to prevent consecutive repetition of the same character does not exist within the native password policy settings.
  • Dictionary words, patterns, and palindromes cannot be restricted while configuring a password policy natively.
  • The native password policy settings cannot be configured to define the number of characters required from specific character types.
  • An Active Directory password policy cannot prevent sophisticated, modern password attacks, like dictionary and brute-force attacks.
  • On the whole, it's challenging for admins to keep tracking the assigned password policies in a particular domain.

Tips from experts: NIST password guidelines

The National Institute of Standards and Technology (NIST) revolutionized password security with its guidelines. Here are the key recommendations from the NIST 800-63B for enterprises:

5.1.1.1 Memorized Secret Authenticators

  • Memorized secrets shall be at least eight characters in length if chosen by the subscriber.

5.1.1.1 Memorized Secret Verifiers

  1. Verifiers should permit subscriber-chosen memorized secrets to be at least 64 characters in length.
  2. All printing ASCII characters as well as the space character should be acceptable in memorized secrets. Unicode characters should be accepted as well.
  3. When processing requests to establish and change memorized secrets, verifiers shall compare the prospective secrets against a list that contains values known to be commonly-used, expected, or compromised. For example, the list may include, but is not limited to:
    • Passwords obtained from previous breach corpuses.
    • Dictionary words.
    • Repetitive or sequential characters (e.g., 'aaaaaa', '1234abcd').
    • Context-specific words, such as the name of the service, the username, and derivatives thereof.
  4. Verifiers should offer guidance to the subscriber, such as a password-strength meter, to assist the user in choosing a strong memorized secret.

Active Directory's native password policies don't fully align with modern NIST guidelines. This is where Manageengine ADSelfService Plus helps bridge the gap in identity security.

Enforce a robust password policy and restrict common words from user passwords

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Effective Active Directory password rules with ADSelfService Plus

ADSelfService Plus' Password Policy Enforcer overcomes the limitations of native Active Directory password policies. It enables organizations to implement custom and strong password policies that seamlessly integrate with the existing Active Directory policy. This strengthens Active Directory passwords to ensure that organizational resources remain protected against cyberthreats.

How to strengthen an Active Directory password policy with ADSelfService Plus' Password Policy Enforcer

The Password Policy Enforcer in ADSelfService Plus can be set to enforce the following password policy requirements.

  • Restrict characters
  • Restrict repetition
  • Restrict pattern
  • Restrict
    length
  • Restrict compromised
    passwords

Restrict characters: This section of the Password Policy Enforcer includes mandating the number of special, numeric, and Unicode characters. You can also set the type of character that the password should start with.

 
 

Configure the inclusion of alpha-numeric characters in passwords.

An image showing the restrict character settings within the Password Policy Enforcer feature in ADSelfService Plus
Figure 1: Restrict password characters using ADSelfService Plus.

Restrict repetition: This section of the Password Policy Enforcer allows you to enforce password history and restrict the use of consecutive characters from usernames or previous passwords. Consecutive repetition of the same character can also be restricted.

 
 

Restrict users from reusing their previous passwords during password creation.

An image showing the restrict repetition settings within the Password Policy Enforcer feature in ADSelfService Plus
Figure 2: Restrict password repetition using ADSelfService Plus.

Restrict pattern: This section of the Password Policy Enforcer restricts the use of custom dictionary words, patterns, and palindromes in passwords. You can configure custom regex patterns that your users' passwords must meet, allowing you to define precise password requirements according to your organization’s needs.

 
 

Restrict users from using common patterns, dictionary words, and palindromes in their passwords.

 
 

Enforce a custom and granular password policy using regex patterns.

An image showing the restrict pattern settings within the Password Policy Enforcer feature in ADSelfService Plus
Figure 3: Restrict password patterns using ADSelfService Plus.

Restrict length: This section of the Password Policy Enforcer lets you set both a minimum and maximum number of characters for the password.

 
 

Configure the minimum and maximum password length to satisfy the NIST password guidelines.

An image showing the restrict length settings within the Password Policy Enforcer feature in ADSelfService Plus
Figure 4: Restrict password length using ADSelfService Plus.

Restrict compromised passwords: ADSelfService Plus lets you integrate with the Have I been Pwned service, which bans the use of passwords involved in previous hacks and prevents credential stuffing attacks.

An image showing that ADSelfService Plus can prevent users from setting breached passwords through its integration with Have I Been Pwned
Figure 5: Restrict users from using breached passwords using ADSelfService Plus' Have I Been Pwned integration.
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GPO password policy vs. Fine-grained password policy vs Password Policy Enforcer

Capabilities GPO password policy Fine-grained password policy ADSelfService Plus
Enforce uppercase, lowercase, numeric, and special characters, as well as Unicode. X (All types cannot be enforced together) X(All types cannot be enforced together) ✓ (Inclusion can be enforced for all these characters)
Block breached passwords, dictionary words, or custom dictionary entries. X X
Prevent repeated characters, sequences, palindromes, and username-based patterns. X X
Restrict reuse of old passwords or consecutive characters from them. X (Old passwords in their entirety can be blocked) X (Old passwords in their entirety can be blocked)
Set minimum and maximum lengths; allow bypass of complexity for long passphrases. X (Complexity cannot be bypassed for passphrases) X (Complexity cannot be bypassed for passphrases)
Apply policies to specific OUs, groups, or scenarios (logon screen, ADUC resets). X (Policies cannot be enforced for specific groups or OUs) X (Policies cannot be enforced for specific groups or OUs)
Display password requirements directly on the Windows logon screen.

Benefits of implementing password policies using ADSelfService Plus

  • Help your users set strong passwords: Display password policy requirements on the reset and change password pages so that users are prompted to set strong passwords. Allow users to see the password strength live on the password change or reset screen by enabling the Password Strength Analyzer.
  • Built-in password reports: Use out-of-the-box reports that give IT admins a holistic view of users' password expiration and account lockout status, enrollment data, and self-service actions in all the connected domains.
  • Encourage passphrases: Enable users to create long and secure passphrases by overriding the password policy rules if the password is beyond a specific length.
  • Enforce password policies universally: Enforce your policy for password changes from the Ctrl+Alt+Del screen and during ADUC password resets.
  • Implement granular password policies: Set password policies for OUs and groups separate from the domain password policy to match the level of sensitive resources that specific users need access to.
  • Prevent weak and exposed passwords: Block weak passwords using comprehensive filtering against dictionary words, common patterns, palindromes, and the Have I Been Pwned database of compromised credentials to prevent users from selecting previously breached passwords.
  • Satisfy regulatory compliance standards: Create password policies that comply with the NIST's Cybersecurity Framework, HIPAA, the CJIS, the NIS2 Directive, and the GDPR.
 

Highlights of ADSelfService Plus

Password self-service  

Unburden Windows AD users from lengthy help desk calls by empowering them with self-service password reset and account unlock capabilities.

Multi-factor authentication  

Enable context-based MFA with 20 different authentication factors for endpoint, application, VPN, OWA, and RDP logins.

One identity with single sign-on  

Get seamless one-click access to more than 100 cloud applications. With enterprise single sign-on (SSO), users can access all their cloud applications using their Windows AD credentials.

Password and account expiry notifications  

Notify Windows AD users of their impending password and account expiry via email and SMS notifications.

Password synchronization  

Synchronize Windows AD user passwords and account changes across multiple systems automatically, including Microsoft 365, Google Workspace, IBM iSeries, and more.

Password policy enforcer  

Strong passwords resist various hacking threats. Enforce Windows AD users to adhere to compliant passwords by displaying password complexity requirements.

FAQ

A password policy is a set of rules created and enforced to strengthen user passwords. A password that satisfies and enforces all the rules of a password policy helps better secure the underlying data against potential password attacks. A password policy includes rules that specify minimum password length, maximum password age, password history requirements, and password complexity details.

A dictionary attack involves a threat actor trying to hack into a user account by repeatedly trying various combinations of dictionary words. Often, the words used are not necessarily dictionary words but predictable password choices, like names, birth places, or pet's names, which users normally tend to use in their passwords. For this reason, users are advised to avoid such words while setting passwords.

In a brute-force attack, all possible combinations of characters are systematically tried. In contrast, a dictionary attack uses a predefined list of commonly used phrases or variations of those phrases to attempt to gain unauthorized access. Dictionary attacks are generally faster but rely on the assumption that the correct password is among the entries in the dictionary list.

Active Directory password complexity requirements are settings that mandate that users include certain special characters, like uppercase, lowercase, or non-alphanumeric characters, and to avoid using their usernames in their passwords. Users have chosen strong passwords when the complexity requirements of the enforced domain password policy are met.

Securing a user account or data endpoint with only a password makes it most vulnerable to the password attacks of today. Deploying multi-factor authentication mechanisms are a good practice to render compromised credentials useless to hackers. Strong authentication mechanisms like biometrics have made passwordless user authentication possible.

The default Active Directory domain password policy defines configurable rules for user account password creation. This password policy is only applicable to the entire domain to which it is linked, and it cannot be customized for a specific set of users, groups, or OUs. Active Directory's FGPP, on the other hand, overcomes this drawback and allows password policies to be tailored to different users and groups within the domain.

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