Information
Use of a complex password helps to increase the time and resources required to compromise the password. Password complexity, or strength, is a measure of the effectiveness of a password in resisting attempts at guessing and brute-force attacks.
Password complexity is one factor of several that determine how long it takes to crack a password. The more complex the password, the greater the number of possible combinations that need to be tested before the password is compromised.
Multifactor authentication (MFA) is required for all administrative and user accounts on network devices, except for an account of last resort and (where applicable) a root account. Passwords should only be used when MFA using PKI is not available, and for the account of last resort and root account.
Solution
Log in to the FortiGate GUI with Super-Admin privilege.
1. Click System.
2. Click Settings.
3. Navigate to Password Policy.
4. On the Password scope option, click Admin.
5. Toggle Character requirements to right.
6. Enter the Numbers value of 1.
or
Log in to the FortiGate GUI with Super-Admin privilege.
1. Open a CLI console, via SSH or available from the GUI.
2. Run the following command:
# config system password-policy
# set min-number 1
# end