What ports are needed for CIFS?

Published by Anaya Cole on

What ports are needed for CIFS?

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.

Is port 139 needed for SMB?

SMB has always been a network file sharing protocol. As such, SMB requires network ports on a computer or server to enable communication to other systems. SMB uses either IP port 139 or 445.

What is port 445 SMB CIFS?

It’s a transport layer protocol designed to use in Windows operating systems over a network. Port 445 is used by newer versions of SMB (after Windows 2000) on top of a TCP stack, allowing SMB to communicate over the Internet. This also means you can use IP addresses in order to use SMB like file sharing.

What ports do SMB and CIFS use?

CIFS protocols and firewall ports

Port Protocol Purpose
445 TCP, UDP SMB, CIFS, SMB2, DFSN, LSARPC, NbtSS, NetLogonR, SamR, SrvSvc
464 TCP, UDP Kerberos change or set a password

Is SMB port 445 TCP or UDP?

SMB is available directly over TCP (port 445) and over NetBIOS over TCP/IP (port 139). Other ports you may see connected with NetBIOS communications are port 137 (nbname) and port 138 (nbdatagram) over User Datagram Protocol.

What is CIFS share?

A CIFS share is a named access point in a volume that enables CIFS clients to view, browse, and manipulate files on a file server.

How do I access CIFS shares?

To connect to your CIFS home directory or web space using Windows:

  1. From Windows search, right click File Explorer.
  2. Click Map Network Drive (at top).
  3. In the Drive list, select an available drive.
  4. In the Folder box, do the following:
  5. Click to select the Connect using different credentials check box.
  6. Click Finish.

Does CIFS need NetBIOS?

Implementation of the NetBIOS API is not required for CIFS. It is also possible to build a direct interface between CIFS and an underlying network transport without the use of a NetBIOS interface layer. In Microsoft documentation, this is referred to as “Direct Hosting”.

What is CIFS protocol?

CIFS (Common Internet File System) is a protocol that gained popularity around the year 2000, as vendors worked to establish an Internet Protocol-based file-sharing protocol. At its peak, CIFS was supported by operating systems (OSes) such as Windows, Linux and Unix.

What is the purpose of CIFS?

Common Internet File System (CIFS) is a network filesystem protocol used for providing shared access to files and printers between machines on the network. A CIFS client application can read, write, edit and even remove files on the remote server.

What is CIFS network share?

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