Smbclient Command Fails With NT_STATUS_IO_TIMEOUT Error

Solution In Progress - Updated -

Issue

  • Running the smbclient command results in this failure:

    $ sudo smbclient -L //SMBSERVER
    do_connect: Connection to SMBSERVER failed (Error NT_STATUS_IO_TIMEOUT)
    
  • The same command works on a RHEL 6 machine using the 3.6 version of smbclient.

Environment

  • Red Hat Enterprise Linux (RHEL) 7.5 running samba-client-4.9.1-10.el7_7.x86_64.
    (But likely applicable to other RHEL 7 minor and samba-client package versions.)

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