EELAB Network Notes

1. Windows  Home Directory (All Students): 
   All the Windows2000 desktops in the teaching labs are connected to the file server diesel.eelab.usyd.edu.au via the Samba file service.
   
   You have your own home directory on diesel, which appears as drive H:\ when you log on to Windows. Application files appear in drive K:\ and free software or other materials appear in drive T:\. 
   Your home directory contains a folder called H:\CONFIGS\NETSCAPE, which is where your netscape settings and addressbook are stored. If this folder is removed you will find that Netscape does not run properly - you can recreate this folder by copying a new one from K:\WEBINI.
      
   There is a disk quota on your home directory on Diesel. The default quota is 10MB for EE1/EE2 students, 20MB for EE3 students and 25MB for EE4 students. The home directories are backed up to tape each night, but there is no means of recovering files that were not copied onto tape.

2. Windows Password (All Students): 
   All students receive a password for the Samba file service. This password cannot be used to log into any of the Unix systems. 
    To change your Windows password you must first log onto Windows, then press Ctrl+Alt+Del  and select the "Change Password" button.

3. Printing Quota (All Students):
   A printing quota is set at the start of the semester. For most students the quota is usually set to 100 pages. Students undertaking a thesis receive a higher quota - typically 250 pages. 
   You can check your print quota online. Additional pages may be requested at the ITU office - room 412 Link Building.

4. Unix Server Access (EE3 and EE4 Students):
   EE3 and EE4 students receive a Kerberos password (seperate from the Windows password) which allows them to log onto shell and FTP sessions on both the Sun servers (diesel and communicator) and the Linux desktops. You MUST change your Kerberos password prior to the expiry date (30th April) - if you do not change it prior to this date the account must be unlocked by the ITU staff. 
   
   To change the Kerberos password you must first log into a Unix or Linux system, then run the "kpasswd" command. When you log in to the Sun servers your home directory will be the same one that you see when
   using Windows. 
   The T:\ drive that appears in Windows appears as /takeme on Diesel.
   Default startup files for user accounts on diesel (such as .login and .cshrc) can be copied from the /home/template directory

5. Linux Desktop Access (EE3 and EE4 Students):
   You can log onto Linux using the Kerberos password.
   Linux does not use diesel home directories, instead it ses a seperate file server running AFS. The AFS file service offers superior security for the Linux lab environment. When you log in to the Linux PC your home directory will be on the AFS file server.
   You cannot directly see your home directory on diesel. You have a seperate disk quota of 20MB in your AFS "home directory".

6. Accessing the AFS file service:
   You can access your AFS files either on the Linux desktops, or on diesel. By logging on to diesel and  following these steps you will be able to "see" both your AFS and normal home directories:

   1. Log onto diesel using your Kerberos password.
   2. Run the command "aklog" - this command uses your Kerberos login "ticket" to create an AFS "token" that entitles you to access your AFS files. You confirm that you have a token using the "tokens" command.
   3. Your AFS files are in the directory /lhome/ - you can now read and write to   files in this directory.
      Your normal files are in /home/.
   4. When you have finished your work use the "unlog" command to destroy your AFS token.

   PLEASE NOTE: The AFS file service enforces permissions at the directory level only - if you give others the permission to read one of your directories they in fact get permission to read every file in that directory! For this reason WWW pages should not be stored in your AFS file space.

    

7. Email Service on Diesel:
   Diesel runs a normal "sendmail" based unix email system. EE3 and EE4 users have mailboxes with the email address @eelab.usyd.edu.au, however the School now sends all normal email to your "MyUni" email account. 
   You may use your "eelab" email account if you wish. You may also redirect any email from this account to another mailbox elsewhere.
   To redirect the email you simply log onto diesel and create a file called ".forward" in your home directory that contains the email address that you want your email send on to - you only need a single line in this file. 
   
    EE1 and EE2 students have a system level "forwarding" entry that sends any email from Diesel on to your "MyUni" email account.

8. WWW Pages on Diesel:
   If you would like to create Web pages and serve them from Diesel you need to create a directory called "public_html" for your web pages. Files within the "public_html" directory need to be read able by all (chmod 644 will achieve this), and the "public_html" directory needs to be searchable by others (chmod 755 will achieve this).
   Your first page should be named /home//public_html/index.htm and you can build onto it from there. 
   You should not give everyone else access to your home directory, but the WWW server needs to be able to look for the html directory within it. chmod 701 /home/ will make your files visible to the server. 
   After all this your WWW site appears as www.eelab.usyd.edu.au/~.

9. Getting Help:
   You can email "helpdesk@eelab.usyd.edu.au" using your email account, or that of a friend.
   
   You can ask for help at the ITU (computer support) office in room 412 in the Engineering Link Building (quite near to the EE general office).