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Free EditionMonitor NTLM (New Technology LAN Manager) authentication activity across your domain with instant visibility, actionable alerts, and detailed audit reports with ADAudit Plus.
Track NTLM authentication attempts across your domain. Identify both successful and failed logons, and analyze result codes to detect issues like incorrect passwords, locked accounts, or expired credentials.
Monitor NTLM logons that occur after business hours or involve expired or disabled accounts. Spot repeated authentication failures to catch brute-force, pash-the-hash attacks, or password spraying attempts early.
Get notified instantly via email or SMS when NTLM authentication anomalies occur. Automate detailed reports to track patterns and trigger custom scripts that respond to suspicious activity.
Maintain audit-ready NTLM logs with complete authentication context. Use built-in reports to analyze legacy protocol usage and meet compliance requirements for HIPAA, SOX, PCI DSS, and GDPR.
Monitor all successful NTLM authentication attempts across users, systems, and timeframes for increased visibility and auditing.
Identify failed NTLM logons with details on usernames, result codes, and source machines to uncover threats.
Identify NTLM-based pass-the-hash attacks with detailed authentication insights.
Set threshold-based NTLM alerts via email, SMS, and trigger counter scripts automatically.
NTLM (NT LAN Manager) is a legacy Windows authentication protocol used to validate credentials during user logons. It relies on challenge-response mechanisms and is still used in environments where Kerberos cannot function, such as with local account authentication or across untrusted domains.
Did you know?
CVE-2025-21311, an NTLMv1 privilege escalation flaw discovered in January 2025, has a critical CVSS score of 9.8, signifying severe remote exploit risk.
Auditing NTLM authentication helps identify the use of outdated and potentially vulnerable protocols in your network. It enables security teams to detect brute-force attempts, password spraying, and misconfigured systems still relying on NTLM instead of more secure options like Kerberos.
Event ID 4776 is generated whenever NTLM is used to validate a user’s credentials.
Analyzing these codes allows you to detect failed NTLM logons and suspicious authentication activity.
Kerberos is the default authentication protocol in Active Directory and uses encrypted tickets for mutual authentication between users and services. This ticket-based model enhances security by preventing credential replay attacks and enabling stronger encryption.
NTLM, in contrast, uses a challenge-response method and lacks mutual authentication, making it more vulnerable to threats like pass-the-hash attacks. While NTLM may still appear in fallback or legacy scenarios, Kerberos is the more secure and recommended choice for modern Windows environments.
Yes, both protocols can exist simultaneously in a Windows domain. NTLM is often used as a fallback when Kerberos cannot be used due to misconfigurations, legacy systems, or cross-forest scenarios without trust.
Audit all file and folder permission changes. Know who made those changes, when, and from where.
Gain instant visibility into all modifications and failed access attempts made to your critical files.
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