What Are SMB Ports?
Port 445 . Windows uses port 445 for file sharing across the network. From Windows 2000 onward, Microsoft changed SMB to use port 445. Microsoft directory services, often known as Microsoft-DS, use port 445.
Windows File Sharing with SMB
Port 445. In modern and supported versions of Windows, File and Printer Sharing services use TCP port 445 for direct TCP/IP communications.
SMB Port Numbers
SMB operates on several ports, with the most common being 139 and 445. Port 139 is used for file and printer sharing over NetBIOS, running over ...