![]() The absence of mutual authentication between a server and a client will result in data interception attacksĤ. NTLM stores password hash in the memory of the LSA service, which can be extracted using different tools and then used by attackers.ģ. ![]() We recommend disabling NTLMv1 and NTLMv2 protocols and use Kerberos due to the following reasons:Ģ. The NTLM (generally, it is NTLMv2) is still widely in use for authentication on Windows domain networks. Windows 2000 Microsoft introduced a more secure Kerberos authentication protocol. Why disable NTLMv1 Authentication in Windows Domain? However, some tools such as Responder can capture NTLM data sent over the network and use them to access the network resources.Īs a part of Server Management Services, our support engineers handle these requests with ease with some simple steps. NTLM (NT LAN Manager) is a basic Microsoft authentication protocol and is in use since Windows NT. At Bobcares we often get requests to disable NTLM Authentication in Windows Domain and enable Kerberos instead for our customers.
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