The F5 BIG-IP appliance must enforce a minimum 15-character password length.

Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks. Password length is one factor of several that helps to determine strength and how long it takes to crack a password.

The shorter the password, the lower the number of possible combinations that need to be tested before the password is compromised. Use of more characters in a password helps to exponentially increase the time and/or resources required to compromise the password.

From the BIG-IP GUI: 1. System. 2. Users. 3. Authentication. 4. Verify that "Secure Password Enforcement" is set to "Enabled". 5. Verify that "Minimum Length" is set to at least 15.

From the BIG-IP console, type the following command(s):

tmsh list auth password-policy minimum-length

Note: Verify the value is set to at least 15.

If the BIG-IP appliance is not configured to enforce a minimum 15-character password length, this is a finding.

From the BIG-IP GUI: 1. System. 2. Users. 3. Authentication. 4. Under "Password Policy" set "Secure Password Enforcement" to "Enabled". 5. Configure "Minimum Length" to 15. 6. Click "Update".

From the BIG-IP console, type the following command(s):

tmsh modify auth password-policy minimum-length 15 tmsh save sys config