SMB

FTP Drive Icon

SMB (Server Message Block) is used to access Windows File Shares or a Samba Linux Server.

Connecting

Important

  • Cyberduck 8.7.0 or later required

  • Mountain Duck 5.0.0 required (Public Beta)

To connect to a SMB server, choose SMB (Server Message Block).

SMB Connection

Authentication

Username and password must be provided for authentication using NTLM. The optional domain name defaults to WORKGROUP and can be customized as part of the username in the format REALM\username in the Username input field when adding a bookmark. Depending on the server setup, this can be

  • COMPUTERNAME\username

  • NETBIOSDOMAINNAME\username

The default domain can be set using the hidden configuration option

smb.domain.default=WORKGROUP

Share Name

To connect to a specific share, you can configure a Path in the bookmark. When omitted an attempt is made to list all available shares from the server. On failure retrieving share names from the server, a prompt is displayed to enter the share name when connecting.

SMB Share Input

Interoperability

SMB protocol support has been tested with connections to the following server implementations

  • Windows 2016 Server (SMB_3_1_1 dialect)

  • Windows 2022 Server (SMB_3_1_1 dialect)

  • Linux Samba (SMB_3_1_1 dialect)

  • macOS 13.5 (22G74) (SMB_3_0_2 dialect)

  • SMB Azure file shares

Encryption

By default, SMB connections are secured by signing and encrypting requests when supported by the server using SMBv3. Alternatively, use the SMB (No Encryption) profile with support for signing and encryption disabled from Preferences… → Profiles.

Cyberduck CLI

You can list shares with Cyberduck CLI using

duck --list smb:/server/share/

Limitations

  • Copying or moving files between shares is not supported