NETBIOS is a transport layer protocol designed to use in Windows operating systems over the network. TCP 445 is SMB over IP. This is a newer version where SMB can be consumed normally over the IP networks. Check If Port 137,138,139 and 445 Is Open. If we want to check the ports 137,138,139 and 445 whether they are open we can use netstat
Name: netbios-ns: Purpose: NetBIOS Name Service: Description: UDP NetBIOS name query packets are sent to this port, usually of Windows machines but also of any other system running Samba (SMB), to ask the receiving machine to disclose and return its current set of NetBIOS names. What is SMB Port and Port Number? Which Protocol Uses Port TCP port 139 is SMB over NETBIOS. NETBIOS is a transport layer protocol designed to use in Windows operating systems over the network. TCP 445 is SMB over IP. This is a newer version where SMB can be consumed normally over the IP networks. Check If Port 137,138,139 and 445 Is Open What is an SMB Port + Ports 445 and 139 Explained
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Nov 13, 2018 List of Well-Known TCP Port Numbers - Webopedia Reference 48 rows Saying Goodbye to NetBIOS - 10-D Security
What is SMB Port and Port Number? Which Protocol Uses Port
What is SMB Port and Port Number? Which Protocol Uses Port TCP port 139 is SMB over NETBIOS. NETBIOS is a transport layer protocol designed to use in Windows operating systems over the network. TCP 445 is SMB over IP. This is a newer version where SMB can be consumed normally over the IP networks. Check If Port 137,138,139 and 445 Is Open