Chapter 14 Managing Devices for FortiOS 5.0 : Vulnerability Scan : Requirements for authenticated scanning and ports scanned : Microsoft Windows hosts - domain scanning : Group Policy - Security Options
  
Group Policy - Security Options
In the Group Policy Management Editor, go to Computer Configuration > Windows Settings > Security Settings > Local Policies > Security Options.
Setting
Value
Network access: Sharing and security model for local accounts
Classic
Accounts: Guest account status
Disabled
Network access: Let Everyone permissions apply to anonymous users
Disabled