Network access: Restrict anonymous access to Named Pipes and Shares

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