Common Network Ports - CompTIA A+ 220-1101

PortAuthority,forInternetPort139·UniformNamingConvention(UNC)·ConnectingtoSMBshareonaWindows2000-basedcomputerora ...,TherearetwocommonportsyouwillseeinSMBs—Port139andPort445.Here'swhattheydo.Port139.Port139isusedbytheNetBIOSsessionservice.Prior ...。參考影片的文章的如下：

SMB Ports Explained: 445 and 139 - Learn the difference
SMB Ports Explained: 445 and 139 - Learn the difference
File transfer using tcp ip protocol
File transfer using tcp ip protocol
FIX NAS Drive NOT VISIBLE on Network Windows 10
FIX NAS Drive NOT VISIBLE on Network Windows 10
How to Access Files on Your Synology NAS via Windows ...
How to Access Files on Your Synology NAS via Windows ...
SMBCIFS and Port 445: Understanding Windows File Sharing
SMBCIFS and Port 445: Understanding Windows File Sharing
How to mount an Azure Files share in Windows
How to mount an Azure Files share in Windows
Easiest Way to Mount File Shares Across Internet Using SMB over ...
Easiest Way to Mount File Shares Across Internet Using SMB over ...
Multiple File Transfer using TCP Socket in Python
Multiple File Transfer using TCP Socket in Python
How to Map a Network Drive on Windows using a Synology NAS
How to Map a Network Drive on Windows using a Synology NAS
Open port on firewall to allow access file sharing
Open port on firewall to allow access file sharing

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開啟CIFS SMB UNC 連線應開放哪些Ports 與注意事項

Port Authority, for Internet Port 139 · Uniform Naming Convention ( UNC ) · Connecting to SMB share on a Windows 2000-based computer or a ...

What Are SMB Ports?

There are two common ports you will see in SMBs — Port 139 and Port 445. Here's what they do. Port 139. Port 139 is used by the NetBIOS session service. Prior ...

Net.TCP Port Sharing - WCF

The Net.TCP Port Sharing Service is a user-mode Windows service that accepts net.tcp:// connections on behalf of the worker processes that connect through it.

設定Windows Server 2025 的替代SMB 埠

您可以使用SMB 用戶端來連線到替代TCP、QUIC 和RDMA 連接埠。 不過，如果SMB 伺服器設定為支援接聽該連接埠，則您只能連線到替代連接埠。

Windows File Sharing with SMB

In modern and supported versions of Windows, File and Printer Sharing services use TCP port 445 for direct TCP/IP communications. When you need ...

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Desktop Central would access the network share using the default windows methods which uses ports like 135, 137, 139 and 445 associated to file sharing and SMB.

What port or ports are used for File sharing in windows?

If the server has NBT enabled, it listens on UDP ports 137, 138, and on TCP ports 139, 445. If it has NBT disabled, it listens on TCP port 445 only.

Is port 445 enough for SMB?

Yes, modern SMB (especially v2/v3) runs only on TCP port 445. However, Windows clients may also expect the server to be pingable, ie respond to ICMP Echo.

What is an SMB Port? A Detailed Description of Ports 445 + 139

SMB is a network file sharing protocol that requires an open port on a computer or server to communicate with other systems. SMB ports are generally port numbers 139 and 445 .

What is an SMB Port + Ports 445 and 139 Explained

SMB requires network ports on a computer or server to enable communication to other systems. SMB uses either IP port 139 or 445.

netshareportnumber

PortAuthority,forInternetPort139·UniformNamingConvention(UNC)·ConnectingtoSMBshareonaWindows2000-basedcomputerora ...,TherearetwocommonportsyouwillseeinSMBs—Port139andPort445.Here'swhattheydo.Port139.Port139isusedbytheNetBIOSsessionservice.Prior ...,TheNet.TCPPortSharingServiceisauser-modeWindowsservicethatacceptsnet.tcp://connectionsonbehalfoftheworkerprocessesthatconnectthroughit.,您可以使用...

參考資訊如下