NetBIOS over TCP/IP - Wikipedia

Service overview and network port requirements for Windows May 27, 2020 Direct hosting of SMB over TCP/IP - support.microsoft.com Apr 16, 2018 Configure Windows Firewall - SQL Server | Microsoft Docs Dec 13, 2019

TCP 139 is used for directory replication, event viewer, file sharing, logon sequence, pass-thru validation, performance monitoring, printing, registry editor, server manager, trusts, user manager, WinNT Diagnostics, and WinNT Secure Channel.Security Concerns: Key target in auth & DOS attacks, plus sniffer capture of sensitive data transfers.

TCP 139 - Port Protocol Information and Warning! TCP Port 139 may use a defined protocol to communicate depending on the application. A protocol is a set of formalized rules that explains how data is communicated over a network. Think of it as the language spoken between computers to help them communicate more efficiently.

How disabled Port 135-139, and Disabled Port 445 in

How To Open Firewall Ports In Windows 10 | Tom's Hardware Add the protocol (TCP or UDP) and the port number into the next window and click Next. Select Allow the connection in the next window and hit Next. Select the network type as you see fit and click