How do I enable NTLM authentication?

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How do I enable NTLM authentication?

In the administration interface, go to Domains and User Login. (Optional) On the Authentication Options tab, select Always require users to be authenticated when accessing web pages. Select Enable automatic authentication using NTLM.

Is NTLM authentication still used?

Current applications. NTLM authentication is still supported and must be used for Windows authentication with systems configured as a member of a workgroup. NTLM authentication is also used for local logon authentication on non-domain controllers.

Where do I find NTLM authentication?

To find applications that use NTLMv1, enable Logon Success Auditing on the domain controller, and then look for Success auditing Event 4624, which contains information about the version of NTLM.

What operating systems use NTLM?

All supported Microsoft operating systems provide NTLMv2 authentication capabilities. Systems that are affected in a default configuration are primarily at risk, such as systems that are running Microsoft Windows NT 4, Windows 2000, Windows XP, and Windows Server 2003.

What applications use NTLM authentication?

Applications That Use NTLM For example, computers still running Windows 95, Windows 98, or Windows NT 4.0 will use the NTLM protocol for network authentication with a Windows 2000 domain.

Is NTLM enabled on my domain?

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….Default values.

Server type or GPO	Default value
Default domain policy	Not configured
Default domain controller policy	Not configured

What is my NTLM domain?

The NTLM identity is the domainsername with which users log on to their Windows PC; for example, MYDOMAIN\jsmith. NTLM credentials include the NTLM identity (as defined above), the PC’s identity, and a non-reversible encryption of the user’s password.

Should I disable NTLM?

To disable NTLM within the domain, the setting NTLM authentication in this domain is set to the value Deny all. The NTLM authentication request of the web server will be blocked on the DC (Event ID 4004)….Example.

Hostname	Setting	Value
client01	Add remote server exceptions for NTLM authentication	192.168.1.112

How do I know if I have NTLM or Kerberos authentication?

One way would be to check the domain controller Security event log for Event ID 4624 (logon) events, where the AuthenticationPackageName is NTLM or Kerberos. You should also verify that your Domain Controllers have auditing enabled, and are capturing the required auditing events.

What is http NTLM authentication?

NT LAN Manager (NTLM) authentication is a challenge-response scheme that is a securer variation of Digest authentication. NTLM uses Windows credentials to transform the challenge data instead of the unencoded user name and password. NTLM authentication requires multiple exchanges between the client and server.

What happens if I disable NTLM?

What is the impact of disabling NTLM?

If you want to turn off NTLM audit policy settings, there will be a little impacts, that is when NTLM authentication is successful or failed, no audit events will logged in Security log under Event Viewer on any DC.

Is NTLM authentication secure?

Is NTLM secure? NTLM is generally considered insecure because it uses outdated cryptography that is vulnerable to several modes of attacks. NTLM is also vulnerable to the pass-the-hash attack and brute-force attacks.

How do I troubleshoot NTLM authentication?

Resolution

Ensure that NetBIOS Name Resolution is enabled on the Domain Controller to which the Web Gateway is sending the NTLM requests.
Ensure that NTLM 401 Authentication is allowed on the Domain Controller.
Check the LDAP Authentication.
Check the NTLM settings.
Check the client browser settings.
Check the DNS settings.

Should you disable NTLM authentication?