Network security: Restrict NTLM: NTLM authentication in this domain

Active Directory Auditing Tool

The Who, Where and When information is very important for an administrator to have complete knowledge of all activities that occur on their Active Directory. This helps them identify any desired / undesired activity happening. ADAudit Plus assists an administrator with this information in the form of reports. In real-time, ensure critical resources in the network like the Domain Controllers are audited, monitored and reported with the entire information on AD objects - Users, Groups, GPO, Computer, OU, DNS, AD Schema and Configuration changes with 200+ detailed event specific GUI reports and email alerts.

Object Access » Network security: Restrict NTLM: NTLM authentication in this domain

What is Network security: Restrict NTLM: NTLM authentication in this domain policy setting?

Network security: Restrict NTLM: NTLM authentication in this domain setting is used to block NTLM authentication on a specific domain. This policy applies only to the domain controller on which it is set. NTLM is an older Windows authentication software that has been known to be vulnerable to man-in-the-middle (MITM) attacks, brute force attacks, SMB relay and so on. Therefore a network administrator can choose to put in place a domain-wide restriction on NTLM authentication using this policy.

Following are the possible values for this setting:

  • Disable: There is no restriction on NTLM authentication requests in this domain.
  • Deny for domain accounts to domain servers: This option blocks the NTLM authentication requests from domain accounts to domain servers unless the server is on the list of server exceptions created by enabling Network security: Restrict NTLM: Add server exceptions setting in that domain..
  • Deny for domain accounts: This option blocks NTLM authentication requests from all domain accounts unless the server is on the list of server exceptions created by enabling Network security: Restrict NTLM: Add server exceptions setting in that domain.
  • Deny for domain servers: Enabling this blocks all NTLM authentication requests to domain servers unless the server is on the list of server exceptions created by enabling Network security: Restrict NTLM: Add server exceptions setting in that domain.
  • Deny all: This option blocks all authentication requests to servers from all accounts unless the server is on the list of server exceptions created by enabling Network security: Restrict NTLM: Add server exceptions setting in that domain.
  • Not defined: This policy is not defined and the domain controller will allow all NTLM authentication requests.

About ADAudit Plus:

ADAudit Plus is a real time change auditing software that helps keep your Active Directory, Azure AD, Windows file servers, NetApp filers, EMC file systems, Synology file systems, Windows member servers, and workstations secure and compliant. With ADAudit Plus, you can get visibility into:

  • Authorized and unauthorized AD management changes
  • User logons, logoffs, and account lockouts
  • GPO changes
  • Group attribute and membership changes
  • OU changes
  • Privileged access and permission changes
  • Azure AD logons, and changes to roles, groups, and applications
  • PowerShell scripts and modules

among other things.

There are more than 200 event-specific reports, and you can configure instant email alerts. You can also export the reports to XLS, HTML, PDF and CSV formats to assist in interpretation and forensics. For more information on ADAudit Plus, visit: https://www.manageengine.com/active-directory-audit/.

Explore Active Directory auditing and reporting with ADAudit Plus.

  •  
  •  
  •  
  • By clicking 'Schedule a personalized demo' you agree to processing of personal data according to the Privacy Policy.
Account Management Auditing
Active Directory Auditing
Windows Server Auditing