Network access: Let Everyone permissions apply to anonymous users
Updated: November 15, 2012
Applies To: Windows Server 2003, Windows Vista, Windows XP, Windows Server 2008, Windows 7, Windows 8.1, Windows Server 2008 R2, Windows Server 2012 R2, Windows Server 2012, Windows 8
This security policy reference topic for the IT professional describes the best practices, location, values, policy management and security considerations for this policy setting.
This policy setting determines what additional permissions are granted for anonymous connections to the computer. If you enable this policy setting, anonymous users can enumerate the names of domain accounts and shared folders and perform certain other activities. This capability is convenient, for example, when an administrator wants to grant access to users in a trusted domain that does not maintain a reciprocal trust.
By default, the token that is created for anonymous connections does not include the Everyone SID. Therefore, permissions that are assigned to the Everyone group do not apply to anonymous users.
The Everyone SID is added to the token that is created for anonymous connections, and anonymous users can access any resource for which the Everyone group has been assigned permissions.
The Everyone SID is removed from the token that is created for anonymous connections.
Set this policy to Disabled.
GPO_name\Computer Configuration\Windows Settings\Security Settings\Local Polices\Security Options
The following table lists the actual and effective default values for this policy. Default values are also listed on the policy’s property page.
Server type or GPO
Default Domain Policy
Default Domain Controller Policy
Stand-Alone Server Default Settings
DC Effective Default Settings
Member Server Effective Default Settings
Client Computer Effective Default Settings
There are no differences in this policy between operating systems beginning with Windows Server 2003.
This section describes features and tools that are available to help you manage this policy.
None. Changes to this policy become effective without a computer restart when they are saved locally or distributed through Group Policy.
This section describes how an attacker might exploit a feature or its configuration, how to implement the countermeasure, and the possible negative consequences of countermeasure implementation.
An unauthorized user could anonymously list account names and shared resources and use the information to attempt to guess passwords, perform social engineering attacks, or launch DoS attacks.
Disable the Network access: Let Everyone permissions apply to anonymous users setting.
None. This is the default configuration.