![]() Setting and deploying this policy using Group Policy takes precedence over the setting on the local device. Changes to this policy become effective without a restart when saved locally or distributed through Group Policy. This section describes different features and tools available to help you manage this policy. LocationĬomputer Configuration\Windows Settings\Security Settings\Local Policies\Security Options Default values Server type or GPOĭomain controller effective default settingsĬlient computer effective default settings You can then add those member server names to a server exception list by using the Network security: Restrict NTLM: Add server exceptions in this domain policy setting. First, set the Network Security: Restrict NTLM: Audit NTLM authentication in this domain policy setting, and then review the Operational log to understand what authentication attempts are made to the member servers. If you select any of the deny options, incoming NTLM traffic to the domain will be restricted. The domain controller will allow all NTLM authentication requests in the domain where the policy is deployed. The domain controller will deny all NTLM pass-through authentication requests from its servers and for its accounts and return an NTLM blocked error unless the server name is on the exception list in the Network security: Restrict NTLM: Add server exceptions in this domain policy setting. Servers that aren't joined to the domain won't be affected if this policy setting is configured. The domain controller will deny NTLM authentication requests to all servers in the domain and will return an NTLM blocked error unless the server name is on the exception list in the Network security: Restrict NTLM: Add server exceptions in this domain policy setting. Only the domain controller will deny all NTLM authentication sign-in attempts from domain accounts and will return an NTLM blocked error unless the server name is on the exception list in the Network security: Restrict NTLM: Add server exceptions in this domain policy setting. NTLM can be used if the users are connecting to other domains, depending on whether any Restrict NTLM policies have been set on those domains. ![]() ![]() ![]() The NTLM authentication attempts will be blocked and will return an NTLM blocked error unless the server name is on the exception list in the Network security: Restrict NTLM: Add server exceptions in this domain policy setting. The domain controller will deny all NTLM authentication sign-in attempts using accounts from this domain to all servers in the domain. The domain controller will allow all NTLM pass-through authentication requests within the domain.ĭeny for domain accounts to domain servers This policy setting doesn't affect interactive logon to this domain controller. The Network Security: Restrict NTLM: NTLM authentication in this domain policy setting allows you to deny or allow NTLM authentication within a domain from this domain controller. Describes the best practices, location, values, management aspects, and security considerations for the Network Security: Restrict NTLM: NTLM authentication in this domain security policy setting. ![]()
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