UDP 137, 138, TCP 139: NetBIOS

NetBIOS is an acronym for Network Basic Input/Output System. It provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network. As strictly an API, NetBIOS is not a networking protocol.


TCP 139, 445: NetBIOS, SMB


nbtscan -r <ip-range>

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