2017年4月19日 · Configure the Network security: LAN Manager Authentication Level setting to Send NTLMv2 responses only. Microsoft and many independent organizations strongly recommend this level of authentication when all client computers support NTLMv2.

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.

2016年8月31日 · The Network security: LAN Manager authentication level setting determines which challenge/response authentication protocol is used for network logons. This choice affects the authentication protocol level that clients use, the session security level that the computers negotiate, and the authentication level that servers accept.

2021年12月23日 · Learn how to change LAN Manager Authentication Level using Registry or Group Policy Editor. It lets you set the authentication protocol for network logons.

2025年1月15日 · Level 1 - Use NTLM 2 session security if negotiated. Clients use LM and NTLM authentication, and use NTLM 2 session security if the server supports it; domain controllers accept LM, NTLM, and NTLM 2 authentication. Level 2 - Send NTLM response only.

There are five authentication levels. [23] Send LM & NTLM responses: Clients use LM and NTLM authentication, and never use NTLMv2 session security; DCs accept LM, NTLM, and NTLMv2 authentication.

2024年3月1日 · NTLM (NT LAN Manager): An improvement over LM, NTLM uses a stronger hashing algorithm for passwords. However, it still has security weaknesses and is susceptible to man-in-the-middle attacks. NTLMv2 (NT LAN Manager v2): The most secure protocol of the three, NTLMv2 offers better protection against various attacks compared to LM and NTLM.

2024年10月12日 · NTLM Hash算法是微软为了在提高安全性的同时保证兼容性而设计的散列加密算法。NTLM Hash是基于MD4加密算法进行加密的。 1、NTLM加密流程. NTLM Hash是由明文密码经过三步加密而成： NTLM Hash =md4(unicode(hex(password))) NTLM Hash的加密流程分为三 …

NTLM is a challenge/response protocol where in the authenticating server or domain controller issues a challenge which the client authenticates using the password hash as a key. NTLM has been repeatedly patched over the years to address security vulnerabilities.

There are 6 levels (from 0 to 5). This will set the level 5: Possible values: The server sends to the Domain controller the domain name, the username, the challenge and the response. If there isn't an Active Directory configured or the domain name is the name of …