What is Ntlmssp process?
What is Ntlmssp process?
Note: NTLMSSP is an authentication method that is an enhanced version of NTLMv1 or NTLMv2 and can actually wrapper those protocols. In the Negotiate, it allows the client and server to agree on the authentication to be used. In a network trace NTLMSSP session, setup requests appear in the data streams as a blob.
How do domain logins work?
A domain logon requires that the user has a user account in Active Directory. The computer must have an account in the Active Directory domain and be physically connected to the network. Users must also have the user rights to log on to a local computer or a domain.
How does NTLM authentication work?
NTLM uses an encrypted challenge/response protocol to authenticate a user without sending the user’s password over the wire. Instead, the system requesting authentication must perform a calculation that proves it has access to the secured NTLM credentials.
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 |
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 |
Is Ntlmssp 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 NTLM is generally considered insecure because it uses outdated cryptography that is vulnerable to several modes of attacks.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.
What is logon process?
In general computer usage, logon is the procedure used to get access to an operating system or application, usually in a remote computer. Almost always a logon requires that the user have (1) a user ID and (2) a password.
What is the process for Windows login?
The Windows logon process in detail
- Step 1 of the Windows logon process with winlogon.exe, logonUI.exe and lsass.exe.
- The Windows Local Security Authority process.
- Windows logon process NegotiateAuthPackage.
- Loading the user profile and desktop.
- Domain controller authentication with Kerberos.
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. |
Is it OK to disable NTLM?
Due to the setting Incoming NTLM traffic being set to the value Deny all accounts, the NTLM connection from client01 to web01 is blocked on the web server (Event ID 4002)….Example.
| Hostname | Setting | Value |
|---|---|---|
| dc01 | Incoming NTLM traffic | Deny all accounts |
| dc01 | NTLM authentication in this domain | Deny all |