Windows 2008 R2 account lockout duration must be configured to 15 minutes or greater.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1099	4.004	SV-32286r3_rule		Medium

Description
The account lockout feature, when enabled, prevents brute-force password attacks on the system. This parameter specifies the period of time that an account will remain locked after the specified number of failed logon attempts.

STIG	Date
Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide	2017-06-09

Details

Check Text ( C-74333r1_chk )
Analyze the system using the Security Configuration and Analysis snap-in. Expand the Security Configuration and Analysis tree view. Navigate to Account Policies >> Account Lockout Policy. If the "Account lockout duration" is less than "15" minutes (excluding "0"), this is a finding. Configuring this to "0", requiring an administrator to unlock the account, is more restrictive and is not a finding.

Check Text ( C-74333r1_chk )

Analyze the system using the Security Configuration and Analysis snap-in.
Expand the Security Configuration and Analysis tree view.
Navigate to Account Policies >> Account Lockout Policy.

If the "Account lockout duration" is less than "15" minutes (excluding "0"), this is a finding.

Configuring this to "0", requiring an administrator to unlock the account, is more restrictive and is not a finding.

Fix Text (F-81005r2_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy >> "Account lockout duration" to "15" minutes or greater. A value of "0" is also acceptable, requiring an administrator to unlock the account.