The IBM z/VM JOURNALING LOGON parameter must be set for lockout after 3 attempts for 15 minutes.

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

Display the System Configuration File.

If the "JOURNALING" statement is set to:

Facility ON LOGON Lockout after three attempts for 15 minutes, this is not a finding. Note: Site may set Lockout value at 0, this will require system administrator action for reset.

Issue "QUERY JOURNAL" command.

If the response is as follows this is not a finding:

Journal: LOGON-on

Configure the System Configuration "JOURNALING" statement to:

Facility ON LOGON Lockout after 3 attempts for 15 minutes or 0 if system administrator action is desired.