Ports 137-139 are for NetBios/Name resolution. Without it you will have to access machines by IP address opposed to NetBIOS name. Example \\192.168.1.100\share_name opposed to \\my_file_server\share_name. So port 445 is sufficient if you can work with IP addresses only.
Jun 27, 2020 CIFS - NetApp CIFS is the primary protocol used by Windows systems for file sharing. CIFS uses UDP ports 137 and 138, and TCP ports 139 and 445. Your storage system sends and receives data on these ports while providing CIFS service. If it is a member of an Active Directory domain, Vulnerability: Windows file sharing ports | Help | Coalition
windows task: Sharing files across different subnets - sigmoid
To enable file and printer sharing in Windows 10, do the following. Open the classic Control Panel app. Go to Control Panel\Network and Internet\Network and Sharing Center: On the left, click the link Change advanced sharing settings. windows - TCP/IP ports necessary for CIFS/SMB operation Ports 137-139 are for NetBios/Name resolution. Without it you will have to access machines by IP address opposed to NetBIOS name. Example \\192.168.1.100\share_name opposed to \\my_file_server\share_name. So port 445 is sufficient if you can work with IP addresses only. Forwarding windows file sharing ports in DSL Routers
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Disable or Enable File and Printer Sharing in Windows 10 To enable file and printer sharing in Windows 10, do the following. Open the classic Control Panel app. Go to Control Panel\Network and Internet\Network and Sharing Center: On the left, click the link Change advanced sharing settings. windows - TCP/IP ports necessary for CIFS/SMB operation Ports 137-139 are for NetBios/Name resolution. Without it you will have to access machines by IP address opposed to NetBIOS name. Example \\192.168.1.100\share_name opposed to \\my_file_server\share_name. So port 445 is sufficient if you can work with IP addresses only.