Microsoft SMB, SMB2, NetBIOS, WINS protocol suite

SMB, the method used to access file and printer shares, can also run independently of NetBIOS over TCP ports 139 and 445. Both of these approaches, however, tend to increase the attack surface of a What is an SMB Port + Ports 445 and 139 Explained | Varonis Mar 29, 2020 GRC | Port Authority, for Internet Port 137

What is the difference between NetBIOS and SMB? - Quora

May 01, 2020 What is NetBIOS? Does Windows need its ports 137 and 138 NetBT uses the following TCP and UDP ports: UDP port 137 (name services) UDP port 138 (datagram services) TCP port 139 (session services) NetBIOS over TCP/IP is specified by RFC 1001 and RFC 1002 . The Netbt.sys driver is a kernel -mode component that NetBIOS - The Wireshark Wiki

Ports scanned or used by Lansweeper | Lansweeper

Top Three Easy Methods to Block TCP Port 445 in Windows 10