(Obviously, there are other protocols, too, but "traditional" Windows file and printer sharing uses SMB). Versions of Windows prior to Windows 2000 encapsulate SMB in the NetBIOS over TCP (NBT) protocol, which uses TCP port 139. Windows 2000 introduced SMB directly over TCP, which uses TCP port 445.

* Microsoft file sharing SMB: User Datagram Protocol (UDP) ports from 135 through 139 and Transmission Control Protocol (TCP) ports from 135 through 139. * Direct-hosted SMB traffic without a network basic input/output system (NetBIOS): port 445 (TCP and UPD). Pray that you don't get script kiddied in 2 hours also. Feb 06, 2018 · Microsoft Windows 10 uses port 445 for direct TCP/IP MS networking access. It doesn't require the NetBIOS layer. Port 445 is related to SMB (Service Message Block) which is an application layer network protocol basically used for file sharing, printer, and serial ports sharing. Jul 07, 2020 · Although Windows file sharing is praised by lots of people because of its convenience and safety before, some users have reported Windows 10 file sharing not working after update 1803/1809/1903. Some users said it cannot recognize other computers when they shared files or folders. Jul 27, 2017 · Step by step : Open port on firewall to allow WIN1091 access to file sharing on DC23 ( Port 445 ) - DC23 : Create and share a folder named DATA - DC22 : Access \\\DATA - OK

SMB provides a lot of windows operating system related services over the network. SMB mainly used for file sharing. In general SMB protocol is used for inter-process communication between the same host processes or remove host processes. SMB Port 139 or 445. Newcomers to the Windows ecosystem generally confuses port numbers of SMB.

@MaQleod The term "file sharing" is pretty well known to users of windows, and doesn't mean FTP or SSH. It's an option in Windows called "File Sharing". There are a multitude of expressions associated with it, such as turn file sharing on, or enable file sharing or make sure the firewall is allowing file sharing through. SMB version 3.0 was introduced with Windows Server 2012 and has been incrementally improved in subsequent releases. Feature description. The Server Message Block (SMB) protocol is a network file sharing protocol that allows applications on a computer to read and write to files and to request services from server programs in a computer network.

Jan 22, 2015 · This will open the Windows Firewall with Advanced Security screen. In the left navigation pane, click on Inbound Rules. In the Inbound Rules screen, scroll down to find the File and Printer Sharing ports. NOTE - there are a total of 10 file and printer sharing ports, but you are only opening the ones listed here: File and Printer Sharing (NB sharing files and printers. If an administrator attempts to open any of these ports by adding them to a local port exceptions list, Windows Firewall does not open the port. In the Windows Firewall component of Control Panel, the "File and Printer Sharing" check box is cleared and administrators cannot select it. Jun 24, 2020 · To disable password protections for file sharing on Windows 10, use these steps: Open Control Panel. Click on Network and Internet. Click on Network and Sharing Center. On the left pane, click the Change advanced sharing settings link.