3/24/2023 0 Comments Smbd on mac![]() ![]() When encryption is disabled on the server side macOS signs the requests and everything appears to work okay. This appears to be happening because the request is not being signed, which is now a requirement after #11038. ![]() With the help of some dtrace and some carefully placed print statements I was able to determine that the client logs off immediately after calling the VALIDATE_NEGOTIATE_INFO ioctl which returns NT_STATUS_ACCESS_DENIED. ![]() It does this about a dozen times and then connect dialog shudders as if the wrong password had been entered. Using WireShark I was able to see that they establish a session and after several encrypted messages the traffic stops – then the client attempts to establish a new session. MacOS Big Sur clients are unable to connect to systems that have SMB encryption enabled. ![]()
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