NTLMv2

NTLMv2 (NT LAN Manager version 2) is a security protocol used by Windows systems to authenticate users and verify their identity, especially on local networks. It improves upon earlier versions by providing stronger encryption and protection against certain attacks. When a user logs in, their computer creates a unique, encrypted response based on a shared password and session data, which the server verifies. This process helps ensure that passwords are not transmitted plainly over the network, enhancing security during user authentication. NTLMv2 remains in use in some environments, though newer protocols like Kerberos are preferred for more robust security.