Chapter 5. Troubleshooting Problems.

Table of Contents

Can't log in.
Can't set the working directory.
Directory listings and file transfers hang.
File transfers fail.
My FTP Client says the server is not responding.
My FTP session is closed unexpectedly.
Pathname wild card patterns do not work as expected.

This chapter describes some common problems and how to prevent or correct them.

Can't log in.

  • Your FTP Client is running on a system outside the UCAR security perimeter. You must use a TLS enabled FTP Client. See Chapter 7, Compatible TLS-enabled FTP Clients for some FTP Clients that support this mode.
    ftp mssftp.ucar.edu
    Trying 128.117.8.214...
    Connected to mssftp.ucar.edu (128.117.8.214).
    220 MSS FTP service ready for new user.
    Name (mssftp.ucar.edu:auser): 
    534 Security is mandatory.
    Login failed.
  • You do not have a valid UCAS account or it has been disabled due to an excessive number of login failures. If you require assistance, submit a request to CISL Customer Support (see CISL Customer Support web site for contact methods).
  • The MSS FTP Service may be having trouble contacting the UCAS authentication service. Try again later. If the problem persists, submit a request to CISL Customer Support.
  • You are trying to use the OpenSSH sftp program. It is not compatible (see the section called “FTP Client).