OU Supercomputing Center for Education & Research
University of Oklahoma   OSCER   OU IT

 

Logging in to OSCER Computers via Secure Shell

Please note that, for security reasons, you can log into OSCER resources via Secure Shell only.

Table of Contents

Windows 95/98/ME/2000/XP/Vista/7 (probably works with 8)

Downloading and Installing PuTTY

  1. Point your browser to the PuTTY download page:
    http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
     
  2. On the "PuTTY Download Page," in the section titled "Binaries," under "For Windows on Intel x86," right click on the first link putty.exe, and from the menu select "Save Link As" (or something similar).
     
  3. Save putty.exe to your Windows desktop. The icon will look like two little PCs and a yellow lightning bolt.

Running PuTTY to Log In to an OSCER Computer

  1. Double click on the PuTTY icon. This will pop up a window titled
    PuTTY Configuration
     
  2. On the left side of the PuTTY Configuration window, under the heading
    Terminal,
    is an entry
    Keyboard
    Click on
    Keyboard
     
  3. This will bring up a section titled
    Options controlling the effects of keys
    Under this is a heading
    Change the sequences set by:
    and beneath that is
    The Backspace key
    Select
    Control-H
     
  4. A bit lower is
    The Function keys and keypad
    Select
    Xterm R6
     
  5. On the left side of the
    PuTTY Configuration
    window, below
    Terminal
    and its subentries, is an entry
    Window
    Click on
    Window
     
  6. This will bring up a section titled
    Options controlling PuTTY's window
    The first option is
    Set the size of the window
    You may choose as many rows as you like (40 is recommended), but you should be sure to choose EXACTLY 80 columns.
    NEVER RESIZE THE PUTTY WINDOW USING THE MOUSE, AND NEVER CLICK THE MAXIMIZE BUTTON AT THE TOP RIGHT OF THE WINDOW.
     
  7. On the left side of the PuTTY Configuration window, the last major heading is
    Connection
    Below that is a subheading
    SSH
    and below that is a sub-sub-heading
    X11
    Click on
    X11
     
  8. In the section titled
    Options controlling SSH X11 forwarding
    select
    Enable X11 forwarding
    NOTE: X-Windows forwarding will work only if your Windows PC has some kind of X-Windows emulator (for example, X-Win32, Hummingbird Exceed, Attachmate).
    If you don't have an X-Windows emulator on your Windows PC, then you don't need to do this.
     
  9. On the left side of the PuTTY Configuration window, the first entry is
    Session
    Click on
    Session
     
  10. This will bring up a section titled
    Basic options for your PuTTY session
    The first option is
    Specify the destination you want to connect to
    Immediately below it is
    Host Name (or IP address)
    In the text box immediately below that, type the full name of the computer that you are logging into; for example:
    boomer.oscer.ou.edu
     
  11. Immediately below this is
    Connection type:
    Select
    SSH
     
  12. If you want to save this login information, then immediately below that is a section titled
    Load, save or delete a stored session
    and immediately below that is
    Saved Sessions
    In the text box below that, again type the name of the computer that you are logging into; for example:
    boomer.oscer.ou.edu
     
  13. To the right of, and slightly below, that textbox are some buttons. Click on
    Save
    The computer name that you just typed will appear in the larger text box just to the left of the buttons.
    In future, you'll be able simply to double click on one of the computer names in this box, rather than going through all of these details.
     
  14. At the bottom right of the PuTTY Configuration window, click
    Open
     
  15. If a
    PuTTY Security Alert
    window pops up, click
    Yes
     
  16. When prompted to login as, type your username and press the Enter key.
     
  17. When prompted for your password, type your password and press the Enter key.
    NOTHING WILL APPEAR AS YOU TYPE YOUR PASSWORD. This is normal for Unix.

MacOS

For MacOS X you don't need PuTTY and can't use it, because PuTTY is only available for Windows. However, you can use ssh from the Unix command line, by starting up a Unix Terminal window:

  1. Double click on your hard drive to open it.
  2. Double click on your Applications folder.
  3. Double click on your Utilies folder.
  4. Double click on Terminal.

Once you get a Terminal window, you'll get a Unix prompt. At the Unix prompt, type:

            ssh  yourusername@machinename
            

In the case of OSCER, machinename is likely to be:
boomer.oscer.ou.edu

You may be asked a yes/no question, in which case type:

yes

You'll then be prompted for your password.

Unix (including Linux)

Most Unix computers already have ssh installed, so you can just use it from the Unix command line, as described above for MacOS, starting from just after the numbered list.

 

 


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