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The Course Linux Server
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-IAN! idallen@idallen.ca

The Course Linux Server at dat2330.idallen.ca is a dual-redundant
high-availability cluster of two machines located in the basement
of my house in Centretown.  (Algonquin ITS will not let faculty run
Internet-accessible Linux servers on campus.)

Any issues you have regarding the Course Linux Server must be dealt with
*only* through your instructor.  Neither Algonquin ITS nor the Help Desk
know anything about these Linux machines.  All issues, including password
resetting, must be resolved directly with your instructor, either by
posting to the appropriate course news group or by sending email.

The Linux machines are located behind a firewall.  Any time you connect
to this machine remotely using the SSH protocol (including using SCP
or SFTP or PuTTY), you must use the port number "2330" to pass through
the firewall.  If you forget the port number, you will get rejected or
your password will not work.

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Connecting from Unix/Linux
--------------------------

    To login to the Course Linux machine from the shell prompt at another
    Unix machine (including from Knoppix or from Macintosh OSX), use
    the SSH command with the -p (lower-case) port number option:

       $ ssh -p 2330 -l abcd0123 dat2330.idallen.ca
       [...answer yes to accept the host key, if asked...]
       [...enter your Course Linux Server password...]

    Replace the userid abcd0123, above, with your usual Algonquin userid.
    Your instructor can tell you your special Linux password.  The options
    "-p" (port) and "-l" (login userid) must be lower-case letters.

    You may also specify your userid in front of the host name:

       $ ssh -p 2330 abcd0123@dat2330.idallen.ca

    If you need your password reset, see your instructor.  Do not go to ITS.

  Alternate access (in case dat2330.idallen.ca is not working):

       $ ssh -p 2330 abcd0123@alt.dat2330.idallen.ca
       (note the "alt." in front of the host name)

Faster connection (on Algonquin campus only)
-------------------========================-

    On-campus at Algonquin, you may find this connection to the Course
    Linux Server via local machine 10.50.254.230 faster:

       $ ssh -p 2330 -l abcd0123 10.50.254.230
      -or-
       $ ssh -p 2330 abcd0123@10.50.254.230

    The local 10.50.254.230 address only works on campus at Algonquin,
    or via the Algonquin VPN.  When on-campus, using 10.50.254.230 is
    often faster than using dat2330.idallen.ca.

  Alternate access (in case port 2330 is not working on campus):

       $ ssh -p 2331 abcd0123@10.50.254.230
       (note the use of port 2331 instead of 2330)

-----------------------
Connecting from Windows
-----------------------

    If you use Windows (e.g. in Algonquin open access labs), you must
    use the PuTTY program (or other SSH-capable program) to connect to
    dat2330.idallen.ca or 10.50.254.230 using the SSH protocol and port
    number 2330 (not the default ssh port 22).

    PuTTY requires you to choose the protocol (SSH) *before* you set
    the different port number (use port 2330 for dat2330.idallen.ca or
    10.50.254.230), or alternate port 2331 for 10.50.254.230).  Choose SSH
    before setting the port.  Most versions of PuTTY default to using
    SSH so that all you need do is give the host name and port number.

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Copies of the Course Notes
--------------------------

    You can find a copy of all the course Notes files for DAT2330 on the
    Linux Server under directory:
    
       ~idallen/public_html/teaching/dat2330/

    Pick the sub-directory corresponding to the current term.

    You can copy files from this directory to your own account for
    modification or study, if you like.  (To avoid plagiarism charges,
    you must credit any material that you copy and submit unchanged.)

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File Transfer to/from the Course Linux Server
---------------------------------------------

    See the Notes file:  file_transfer.txt