Since the easiest way to access your Azure file share from on-premises is to open your on-premises network to port 445, Microsoft recommends the following steps to remove SMB 1.0 from your environment: Ensure that SMB 1.0 is removed or disabled on your organization's devices.

SMB service is provided over two ports. 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. Ports needed for accessing windows file share by dns name Jan 18, 2017 Service overview and network port requirements for Windows May 27, 2020 Internet firewalls can prevent browsing and file sharing Apr 17, 2018

Enable or Disable File and Printer Sharing in Windows

Mar 31, 2017 Windows Firewall: Allow inbound file and printer sharing Allows inbound file and printer sharing. To do this, Windows Firewall opens UDP ports 137 and 138, and TCP ports 139 and 445. If you enable this policy setting, Windows Firewall opens these ports so that this computer can receive print Port Requirements - AWS Storage Gateway

SMB service is provided over two ports. 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.

Nov 28, 2016 List of TCP and UDP port numbers - Wikipedia The port numbers in the range from 0 to 1023 (0 to 2 10 − 1) are the well-known ports or system ports. They are used by system processes that provide widely used types of network services. On Unix-like operating systems, a process must execute with superuser privileges to be able to bind a network socket to an IP address using one of the well-known ports.