Network access: Restrict anonymous access to Named Pipes and Shares
When enabled, this security setting restricts anonymous access to shares and pipes to the settings for:
Network access: Named pipes that can be accessed anonymously
Network access: Shares that can be accessed anonymously
Default: Enabled.
Policy path:
Computer Configuration\Windows Settings\Local Policies\Security Options
Supported on:
At least Windows XP SP2, Windows Server 2003
Registry settings:
MACHINE\System\CurrentControlSet\Services\LanManServer\Parameters\NullSessionShares
Reboot required:
Yes