The system must lockout accounts after 3 invalid logon attempts within a specified time period.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-1097	4.002	SV-32284r2_rule		Medium

Description
The account lockout feature, when enabled, prevents brute-force password attacks on the system. The higher this value is, the less effective the account lockout feature will be in protecting the local system. The number of bad logon attempts should be reasonably small to minimize the possibility of a successful password attack, while allowing for honest errors made during a normal user logon.

STIG	Date
Windows Server 2008 R2 Domain Controller Security Technical Implementation Guide	2019-06-18

Details

Check Text ( C-60969r2_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 threshold" is "0" or more than "3" attempts, this is a finding.

Fix Text (F-65701r3_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Account Policies >> Account Lockout Policy >> "Account lockout threshold" to "3" or less invalid logon attempts (excluding "0", which is unacceptable).