https://www.bleepingcomputer.com/news/microsoft/windows-11-gets-better-protection-against-smb-brute-force-attacks/

Microsoft announced that the Windows 11 SMB server is now better protected against brute-force attacks with the release of the Insider Preview Build 25206 to the Dev Channel.

Redmond has enabled the SMB authentication rate limiter by default and tweaking some of its settings to make such attacks less effective, starting with the latest Windows 11 Insider dev build.