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Configuring the default Linux user

You can configure the default Linux user to be used if all other mapping attempts fail for a user, or if you do not want to map individual users between Linux and Windows. Alternatively, if you want authentication of non-mapped users to fail, you should not configure the default Linux user.

About this task

By default, the name of the default Linux user is pcuser, which means that, by default, user mapping to the default Linux user is enabled. You can specify another name to use as the default Linux user. The name that you specify must exist in the name service databases configured for the storage virtual machine (SVM). If this option is set to a null string, no one can access the CIFS server as a Linux default user. That is, each user must have an account in the password database before they can access the CIFS server.

For a user to connect to the CIFS server using the default Linux user account, the user must meet the following prerequisites:

  • The user is authenticated.

  • The user is in the CIFS server's local Windows user database, in the CIFS server's home domain, or in a trusted domain (if multidomain name mapping searches is enabled on the CIFS server).

  • The user name is not explicitly mapped to a null string.

  1. Configure the default Linux user:
    If you want to ...Enter ...
    Use the default Linux user pcuservserver cifs options modify -default-unix-user pcuser
    Use another Linux user account as the default uservserver cifs options modify -default-unix-user user_name
    Disable the default Linux uservserver cifs options modify -default-unix-user ""

    Example

    vserver cifs options modify -default-unix-user pcuser
  2. Verify that the default Linux user is configured correctly: vserver cifs options show -vserver vserver_name

    Example

    In the following example, both the default Linux user and the guest Linux user on SVM vs1 are configured to use Linux user pcuser:

    vserver cifs options show -vserver vs1
    Vserver: vs1

      Client Session Timeout : 900
      Default Unix Group     : -
      Default UNIX User      : pcuser
      Guest UNIX User        : pcuser
      Read Grants Exec       : disabled
      Read Only Delete       : disabled
      WINS Servers           : -