LM is among the many oldest authentication protocols used by Microsoft. However, its hashes were fairly easy to crack. By shooting hashes and cracking them to obtain account logon credentials, attackers could easily authenticate to other techniques on the community. NTLM, which succeeded LM, is an encrypted problem/reaction based authentication protocol used for community logons by client devices, yet it’s still easy to crack. NTLMv2 was a significant benefit in comparison to NTLM when it comes to both authentication and consultation security mechanisms.
It more advantageous the security of NTLM by adding the ability for a server to authenticate to a client.