What is Microsoft NTLM?

What is Microsoft NTLM?

Windows New Technology LAN Manager (NTLM) is a suite of security protocols offered by Microsoft to authenticate users’ identity and protect the integrity and confidentiality of their activity.

What is NTLM authentication used for?

The NTLM authentication protocols authenticate users and computers based on a challenge/response mechanism that proves to a server or domain controller that a user knows the password associated with an account.

What is the difference between NTLM and Windows authentication?

NTLM is also based on symmetric key cryptography technology and needs resource servers to provide authentication, integrity, and confidentiality to users….Difference between Kerberos and NTLM :

S.No. Kerberos NTLM
4. Kerberos has the feature of mutual authentication. NTLM does not have the feature of mutual authentication.

What Windows versions use NTLM?

NTLMv1 Authentication: NTLM was developed by Microsoft. It supports both new and old Windows versions (Windows 95, Windows 98, Windows ME, N.T 4.0). NTLM authentication is structured as a challenge and response mechanism: A user signs in to a client computer with a domain name, user name, and password.

What is NTLM and how it works?

NTLM uses an encrypted challenge/response protocol to authenticate a user without sending the user’s password over the wire. The client computes a cryptographic hash of the password and discards the actual password. The client sends the user name to the server (in plaintext).

Should I disable NTLM authentication?

To make the Windows operating system use more secure protocols (e.g. Kerberos version 5), it is recommended to disable outgoing NTLM authentication traffic for the machine where you plan to deploy Netwrix products.

What is the difference between NTLM and NTLMv2?

How NTLMv2 is Different From NTLMv1: NTLM v2 also uses this flow with a slight change. In NTLMv2, the client includes a timestamp, and a username together with the nonce in step 3 above. In addition, while NTLMv1 is using a 16-byte random number challenge, NTLMv2 provides a variable-length challenge.

How do I know if NTLM is 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.

Which is more secure NTLM or Kerberos?

Security. – While both the authentication protocols are secure, NTLM is not as secure as Kerberos because it requires a point-to-point connection between the Web browser and server in order to function properly. Kerberos is more secure because it never transmits passwords over the network in the clear.