Shulou(Shulou.com)11/24 Report--

CTOnews.com June 5, Microsoft released Windows 11 Canary core version in early June, in which Enterprise Edition 25381 now requires server message block (CTOnews.com Note: Server Message Block referred to as SMB, Microsoft network communication protocol) signature for all connections.

In a blog post, Microsoft Chief Project Manager Ned Pyle explained the reasons for this move and revealed that the change will be applied to more versions of Windows along with Windows Server.

Although Windows and Windows Server versions have supported SMB signatures for a long time, Microsoft has recently taken a number of steps to make it an important part of Windows security.

In March 2022, Microsoft added the SMB authentication rate limiter to the preview version, which set a 2-second timeout limit for each failed NTLM authentication attempt. In theory, this makes it harder for hackers to try to log in multiple times.

In January 2023, Microsoft said that Windows 11 Pro would soon start disabling insecure SMB guest authentication fallback. Today, Ned Pyle said the new move to make SMB signatures the default signature is "part of a campaign to improve Windows and Windows Server security for modern environments."

Ned Pyle added:

"it is expected that in the coming months, this signature default change will appear in Professional, Educational, and other Windows versions, as well as in Windows Server. Depending on the progress of the preview, it will begin to appear in major versions."

In addition, according to Pyle, future versions of Windows will not terminate SMB functionality:

"We will continue to introduce more secure SMB defaults and many new SMB security options in the coming years; I know they may affect application compatibility, and Windows has a tradition of ensuring ease of use, but there is no room for security."

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