What port does NTLMv2 use?

The only port you need is 1433 as TCP. This is the port used by defaul, nonnamed SQL Server instances for TCP connections. FreeTDS will initiate a connection on this port and will then negotiate a NTLMv2 authentication on this connection, as a series of challenge/response packet exchanges.

Is NTLMv2 the same as Kerberos?

The main difference between NTLM and Kerberos is in how the two protocols manage authentication. NTLM relies on a three-way handshake between the client and server to authenticate a user. Kerberos uses a two-part process that leverages a ticket granting service or key distribution center.

How do I configure NTLMv2?

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”.

What port is Windows authentication?

Integrated Windows Authentication uses kerberos authentication using port 88 (GSSAPI's).

What is NTLMv2 used for?

LAN Manager authentication includes the LM, NTLM, and NTLMv2 variants, and it is the protocol that is used to authenticate all client devices running the Windows operating system when they perform the following operations: Join a domain. Authenticate between Active Directory forests.

How to Capture Net-NTLMv2 Hashes Using DHCP w/ Responder

Can you pass the hash with NTLMv2?

NTLM has been succeeded by NTLMv2, which is a hardened version of the original NTLM protocol. NTLMv2 includes a time-based response,which makes simple pass the hash attacks impossible.

Should I disable NTLMv2?

We recommend disabling NTLMv1 and NTLMv2 protocols and use Kerberos due to the following reasons: NTLM has very weak encryption.

What is ntlmv2 authentication?

Windows Challenge/Response (NTLM) is the authentication protocol used on networks that include systems running the Windows operating system and on stand-alone systems.

What is port 135 commonly used for?

Port 135 is used for RPC client-server communication; ports 139 and 445 are used for authentication and file sharing. UDP ports 137 and 138 are used for local NetBIOS browser, naming, and lookup functions.

Is NTLMv2 enabled?

NT LAN Manager (including LM, NTLM v1, v2, and NTLM2) is enabled and active in Server 2016 by default, as its still used for local logon (on non-domain controllers) and workgroup logon authentication in Server 2016. You can restrict and/or disable NTLM authentication via Group Policy.

What ports does NTLM use?

NT LAN Manager (NTLM) is the default authentication scheme used by the WinLogon process; it uses three ports between the client and domain controller (DC): UDP 137 – UDP 137 (NetBIOS Name) UDP 138 – UDP 138 (NetBIOS Netlogon and Browsing) 1024-65535/TCP – TCP 139 (NetBIOS Session)

How do I access LAN Manager?

Click Start > All Programs > Accessories > Run and type secpol. msc in the Open box, and then click OK. Click Local Policies > Security Options > Network Security: LAN Manager authentication level. Click Send LM & NTLM – use NTLMv2 session security if negotiated.

How secure is NTLMv2?

NTLM has two versions – NTLMv1 and NTLMv2. NTLMv2 suppose to offer better security than its previous version, and to some extent it does provides better defense against relay and brute force attacks, but does not completely block them.

What is Kerberos port no?

Ports 88 and 464 are the standard ports for Kerberos authentication.

Is LDAP NTLM or Kerberos?

Kerberos largely replaced NTLM, an older and Microsoft's original (with Windows NT) authentication protocol. LDAP is also an authentication and authorization protocol, and also methodology of organizing objects such as users, computers, and organizational units within a directory, such as Active Directory.

What is port TCP 636 used for?

The default port (636) is used for searching the local domain controller, and it can search and return all attributes for the requested item. The Global Catalog Port also searches the local domain controller, but only returns attributes marked for replication to the Global Catalog.

What uses TCP port 636?

TCP and UDP 636 Secure or SSL LDAP

LDAPS is a secure version of the LDAP where LDAP communication is transmitted over an SSL tunnel. Also, TCP and UDP 636 can be used for LDAPS secure transmission.

What port does LDAP run on?

LDAPS communication occurs over port TCP 636. LDAPS communication to a global catalog server occurs over TCP 3269.

Is NTLMv2 based on MD4?

NTLMv2 (NT hash) of the password is calculated by using an unsalted MD4 hash algorithm.

Is NTLMv2 vulnerable?

NTLM is a rather veteran authentication protocol and quite vulnerable for relatively easy to initiate attacks. The fact that it is not secure, doesn't make it easier to move to a better protocol (such as Kerberos), since many functions are dependent on it.

Is NTLMv2 deprecated?

There is no removed or deprecated functionality for NTLM for Windows Server 2012 .

What is the main difference between NTLM and net NTLMv2?

NTLMv2 (A.K.A. Net-NTLMv2) This is the new and improved version of the NTLM protocol, which makes it a bit harder to crack. The concept is the same as NTLMv1, only different algorithm and responses sent to the server.

Is NTLMv2 salted?

To answer your question: NTLM is unsalted, and NTLMv2 adds a salt, which is exchanged in the messaging.

Does Windows 10 support NTLM?

NTLMv2 is supported since Windows NT 4.0 SP4. The Kerberos protocol has been the primary and preferred authentication method in an Active Directory infrastructure since Windows 2000. However, NTLM is still active by default in Windows 10 and Windows Server 2019 for compatibility reasons.