samba-tool domain passwordsettings

samba-tool domain passwordsettings is a Samba utility that allows administrators to view and modify domain-wide password policy settings for a Samba Active Directory domain. It lets you enforce security measures such as minimum and maximum password age, minimum password length, password history, and account lockout policies.

Overview

  • Purpose: Manage and enforce password policies across your domain, ensuring that user credentials adhere to your organization’s security requirements.

  • Key Functions:

    • Display current domain password policy settings.

    • Modify settings such as:

      • Minimum and maximum password age.

      • Minimum password length.

      • Password history length.

      • Account lockout thresholds and duration.

      • (Additional options may include password complexity settings and reversible encryption.)

Common Subcommands and Options

Viewing Current Password Settings

To display the current password policy, run:

samba-tool domain passwordsettings show

This outputs details like:

  • Minimum password age

  • Maximum password age

  • Minimum password length

  • Password history length

  • Lockout threshold and duration

  • Password complexity requirements

Setting Password Policies

Use the set subcommand with the appropriate options to modify a policy.

Set Minimum Password Age

samba-tool domain passwordsettings set --min-pwd-age=1

Sets the minimum password age to 1 day.

Set Maximum Password Age

samba-tool domain passwordsettings set --max-pwd-age=90

Sets the maximum password age to 90 days.

Set Minimum Password Length

samba-tool domain passwordsettings set --min-pwd-length=8

Requires a minimum of 8 characters for passwords.

Set Password History Length

samba-tool domain passwordsettings set --pwd-history-length=5

Keeps a history of the last 5 passwords to prevent reuse.

Configure Account Lockout Policy

samba-tool domain passwordsettings set --lockout-threshold=5 --lockout-duration=30

Locks an account after 5 failed login attempts for 30 minutes.

Additional Options

Depending on your Samba version, you might have additional options to:

  • Configure password complexity settings.

  • Enable or disable reversible encryption.

  • Manage notification settings for expiring passwords.

Example Usage

Viewing the Current Password Policy:

samba-tool domain passwordsettings show

Example output:

Minimum password age: 1 day
Maximum password age: 90 days
Minimum password length: 8 characters
Password history length: 5 passwords
Lockout threshold: 5 invalid attempts
Lockout duration: 30 minutes
Password complexity: enabled

Enforcing a New Policy: To require passwords to be at least 10 characters long and to remember the last 7 passwords:

samba-tool domain passwordsettings set --min-pwd-length=10 --pwd-history-length=7

Best Practices

  • Ensure Compliance: Align password settings with your organization's security policies to mitigate risks like brute-force attacks and password reuse.

  • Test Changes: Always test policy changes in a non-production environment first, as overly strict settings might inadvertently lock out users.

  • Document and Backup: Keep a record of your current settings and back up your Samba configuration, so you can restore policies if needed.

Conclusion

The samba-tool domain passwordsettings command is essential for administering password policies in a Samba Active Directory environment. It provides a straightforward way to view and enforce critical security measures, ensuring that domain-wide credentials meet the required standards and protecting against common security threats.

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