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Regarding port enumeration, which port does SMB over TCP with NetBIOS use?
TCP port 53
TCP port 25
TCP port 139
TCP port 445
Microsoft and Wikipedia disagree on this one. It seems to hinge on whether or not NetBIOS is utilized or not: Micrsoft says 445: https://support.microsoft.com/en-us/help/204279/direct-hosting-of-smb-over-tcp-ip And Wikipedia says 139: https://en.wikipedia.org/wiki/ServerMessageBlock edit: SMB can be run over NetBIOS or directly over TCP. So the answer to the question is port 139. You can disable NetBIOS (in WINS setting), which is recommended, and run SMB over TCP directly. In that case, it's port 445.
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