AAA Services must be configured to automatically lock user accounts after three consecutive invalid logon attempts within a 15-minute time period.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-204644	SRG-APP-000065	SRG-APP-000065-AAA-000200	SV-204644r960840_rule	2024-12-04	2

Description
By limiting the number of failed logon attempts, the risk of unauthorized system access via user password guessing, otherwise known as brute forcing, is reduced. Limits are imposed by locking the account.

ℹ️ Check
If AAA Services rely on directory services for user account management, this is not applicable and the connected directory services must perform this function. Verify AAA Services are configured to automatically lock user accounts after three consecutive invalid logon attempts within a 15-minute time period. If AAA Services are not configured to automatically lock user accounts after three consecutive invalid logon attempts within a 15-minute time period, this is a finding.

ℹ️ Check

If AAA Services rely on directory services for user account management, this is not applicable and the connected directory services must perform this function. Verify AAA Services are configured to automatically lock user accounts after three consecutive invalid logon attempts within a 15-minute time period. If AAA Services are not configured to automatically lock user accounts after three consecutive invalid logon attempts within a 15-minute time period, this is a finding.

✔️ Fix
Configure AAA Services to automatically lock user accounts after three consecutive invalid logon attempts within a 15-minute time period.