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RestrictNullSessAccess

HKLM\SYSTEM\CurrentControlSet\Services\LanmanServer\Parameters

Data type

Range

Default value

REG_DWORD

0 | 1

1

Description

Determines whether the Server service restricts access to clients logged on to the system account without username and password authentication.

Value

Meaning

0

Null session access is not restricted. Unauthenticated users access all shared resources.

1

Null session access is restricted. Unauthenticated users can access only the server pipes listed in the value of the NullSessionPipes entry and the shared directories listed in the value of the NullSessionShares entry.

Note Image Note

The name of this entry was documented incorrectly as RestrictNullSessionAccess in the Windows NT Resource Kit 4.0. The name shown here, RestrictNullSessAccess, is correct.

Windows 2000 does not add this entry to the registry. You can add it by editing the registry or by using a program that edits the registry.

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