How do I enable NTLM protocol?

How do I enable NTLM protocol?

Click down to “Local Computer Policy -> Computer Configuration -> Windows Settings -> Security Settings -> Local Policies -> Security Options. Find the policy “Network Security: LAN Manager authentication level”. Right click on this policy and choose “Properties”. Choose “Send NTLMv2 response only/refuse LM & NTLM”.

Is NTLM enabled?

It is enabled by default starting with Windows Vista / Windows Server 2008 and prevents creating LM hash. Don’t forget to apply this policy to your domain controllers. If you have made sure that you are not using NTLMv1, you can go further and try to disable the NTLMv2.

What protocol is NTLM?

Windows Challenge/Response (NTLM) is the authentication protocol used on networks that include systems running the Windows operating system and on stand-alone systems. The Microsoft Kerberos security package adds greater security than NTLM to systems on a network.

Is NTLM authentication safe?

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 NTLM is generally considered insecure because it uses outdated cryptography that is vulnerable to several modes of attacks.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.

Should I disable NTLM authentication?

There can be multiple reasons why you may want to disable NTML Authentication in Windows Domain. Some of the most common reasons are: NTML is not secure and offers weak encryption. In the case of NTML, your password hash will be stored in LSA Service.

What happens if I disable NTLM?

The main risk of disabling NTLM is the potential usage of legacy or incorrectly configured applications that can still use NTLM authentication. We will have to configure them in a special way to switch to Kerberos.

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.

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.

How do I know if NTLM is being used?

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.