The Fortinet FortiGate 50B firewall appliance doesn’t use good password security! By default the admin account comes with a blank password instead of forcing the admin to set a secure password during installation. From the quick start guide:
The full admin guide shows it as well:
Set a strong password for the admin administrator account, and change the password regularly. By default, this administrator account has no password. Failure to maintain the password of the admin administrator account could compromise the security of your FortiGate unit.