How we can secure the NTLM

While NTLM (NT LAN Manager) is a legacy authentication protocol that has several known security weaknesses, there are some steps that can be taken to improve its security:

1. Use strong passwords: Strong passwords can make it more difficult for attackers to crack NTLM hashes and gain unauthorized access to systems.
2. Disable NTLMv1: NTLMv1 is an older version of the protocol that is more vulnerable to attacks. Disabling NTLMv1 and using only NTLMv2 can improve the security of the protocol.
3. Use Extended Protection for Authentication: Extended Protection for Authentication (EPA) is a feature in Windows that provides additional security for NTLM authentication by adding a channel binding token to the authentication process. This makes it more difficult for attackers to use stolen hashes to impersonate users.
4. Use SMB signing: Server Message Block (SMB) signing is a feature in Windows that can help prevent man-in-the-middle attacks by adding a digital signature to SMB packets. This can protect NTLM authentication traffic from tampering and other types of attacks.
5. Implement multi-factor authentication: Multi-factor authentication can provide an additional layer of security by requiring users to provide more than one form of authentication, such as a password and a biometric factor.

While these measures can improve the security of NTLM, it’s important to note that NTLM is still a legacy protocol and should be phased out in favor of stronger authentication protocols such as Kerberos and modern standards-based protocols like OAuth and OpenID Connect.

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