Archive for July, 2005

What version of PHP is Steel/Silver running?

Friday, July 8th, 2005

Steel/Silver is running PHP 4.3.2.

How do I sign up for password expiration warnings?

Friday, July 8th, 2005

Via the Command Line:
1. log into Steel using an SSH client (Secure CRT, SSH Secure Shell Client, etc.)
2. issue the following command:

echo “myemail@mail.gatech.edu” >> .forward
(replace “myemail@mail.gatech.edu” with the address where you would like to receive expiration notices)

Via Secure FTP:
Read the rest of this entry »

How long before my password expires?

Friday, July 8th, 2005

Passwords for Steel/Silver expire 160 days after the last date that you changed it. You may issue the command “chage -l” to check the age of your password.

Faculty: How do I connect to Silver from my computer in the Skiles building?

Friday, July 8th, 2005

You may use traditional (non-secure) FTP clients (Fetch, WS-FTP, Dreamweaver’s built in FTP client) or Secure technologies (SSH, SCP or SFTP) from your office in Skiles.

You may point your FTP, SSH, SCP or SFTP client to “silver.skiles.gatech.edu” or “www.lcc.gatech.edu”.

What if I forget my Steel/Silver password?

Friday, July 8th, 2005

You will need to come by Skiles 356 to have it reset. You may email lcc-support@iac.gatech.edu to schedule an appointment, or just drop by. Please bring your Buzz Card.

How do I change my Steel/Silver password?

Friday, July 8th, 2005

Use an SSH client to log into the server, then enter the “passwd” command at the command prompt:

[bsmith@silver bsmith]$ passwd

Press return. You will be prompted for your current password once, then twice for your new password.

Passwords should be at least 8 characters in length, should contain letters and/or numbers and symbols, and should not be based on a dictionary word.

What is my username and password for Iron?

Friday, July 8th, 2005

You will use your GT Account user ID and password to access Iron. This is the same username/password that you use to access Spectrum email, lab computers and other OIT systems.

What if I forget my Iron password?

Friday, July 8th, 2005

Because Iron uses your GT username and password for authentication, you will need to contact OIT to have your password reset. Please see password.gatech.edu for more information on managing your GT account password.

How to set permissions for web files

Friday, July 8th, 2005

Files need to have 755 or “World Readable & Executable” permissions in order to be served to the web. If a file does not have these minimum permissions, you will get a “403″ error in your web browser.

The most efficient way to fix a permission problem in your web directory is via the command line. SSH into the server and issue the following command:

chmod -R 755 www/* [press return]

If you wanted to fix files in a subdirectory of your www folder, you can specify just that folder:

chmod -R 755 www/images/* [press return]

Why can’t I see a listing of files in a given directory when I open my site in a browser?

Friday, July 8th, 2005

If you try to view a directory in your web space that does not have an index.html, index.htm or index.php file, you will get a 403 Error. This is because directory listings on the web server are turned off by default. To turn them on, create a file called “.htaccess” that contains the line “Options +Indexes” and place it in your www directory (i.e. /…/yourusername/www/). Make sure that the file is world-readable via the software that you a using or the chmod command on the command prompt. Click here for more info on permissions.

What software do I need to connect to a LCC server?

Friday, July 8th, 2005

To connect to one of the LCC servers you will need to use one of three Secure technologies: SSH, SCP or SFTP. These three Secure technologies provide strong authentication and secure communications over insecure channels. This is the preferred method to connect to our servers, since it allows you access from any computer, on or off campus.

SSH, or Secure Shell, will allow you to access your shell account. SCP and SFTP provide graphical interfaces that will enable you to upload and download files from your local computer to the server.

Once you have chosen a method to connect, point the client to xxx.lcc.gatech.edu on port 22, where the xxx is the server name (i.e. ‘iron’, ’steel’, or ’silver’.)

You may also use AppleShare and FTP to connect to Silver/Steel, but only from within the Skiles building. To connect via Apple Share, use the Chooser to select AppleShare, then the git-lcc zone, then click on the desired server name. If you do not see the server name in the list of AppleShare servers, click “IP Address” and enter “steel.lcc.gatech.edu”.

Can I use Dreamweaver MX’s FTP utility to connect to my account?

Friday, July 8th, 2005

Dreamweaver MX’sbuilt in FTP client is not compatible with the LCC servers, even when used with the SSH encrypted secure login option.

Dreamweaver MX 2004’s built in FTP client is compatible with LCC servers. Follow these steps:

1. Create a new site in Dreamweaver
2. Select “Edit local copies on my machine and then upload to server when ready”
3. Select a location to store the files, click “Next”
4. When asked how to connect to your remote server, enter the following:

  • How do you connect to your remote server? FTP
  • What is the hostname..? [the server name].lcc.gatech.edu
  • What folder … do you want to store your files in? www
  • What is your FTP login? [your account username] (your GT-number for iron, or your steel/silver username)
  • What is your FTP password? [your account password] (your GT/prism account password for iron or your steel/silver password)
  • Check Use Secure FTP (SFTP)

5. Click “Test connection” to confirm that your settings are correct.

What is SFTP?

Friday, July 8th, 2005

SFTP (Secure FTP) is a utility identical in function to traditional FTP that copies files over a SSH connection. SFTP is also almost identical in function to SCP, and is the most user-friendly of the secure methods of uploading files to Silver.

Example SFTP clients: SSH.com?s sFTP client for Windows, MacSFTP for MacOS, Fugu for MacOS X.

What is SCP?

Friday, July 8th, 2005

SCP (Secure CoPy) is a utility used to copy files over an SSH connection. A SCP client will provide a user-friendly graphical interface to help you copy files back and forth between your computer and the server.

Example SCP clients: WinSCP for Windows, Nifty Telnet SSH for MacOS.

What is SSH?

Friday, July 8th, 2005

SSH (Secure Shell) is a utility used to log into another computer over a network, to execute commands in a remote machine, and to move files from one machine to another. If you are comfortable using a Unix command-line environment, SSH is for you.

Example SSH Clients: SecureCRT for Windows, PuTTy for Windows, Nifty Telnet SSH for MacOS, Mac OS X’s built-in Terminal application.

Where do I get a SSH, SCP, or SFTP client?

Friday, July 8th, 2005

The following is a list of user-friendly clients that LCC Computer Support recommends for home or personal computers:

Windows:
+ SFTP: SSH.com’s sFTP client - available at ftp://ftp.ssh.com/pub/ssh/ (download “SSHSecureShellClient.exe”)
+ SCP: WinSCP - free from OIT: http://www.oit.gatech.edu/software/
+ SSH: SecureCRT - free from OIT: http://www.oit.gatech.edu/software/

Macintosh:
+ SFTP: FUGU (OS X) - http://rsug.itd.umich.edu/software/fugu/
+ SFTP: MacSFTP (OS 9) - http://pro.wanadoo.fr/chombier/
+ SSH/SCP: Nifty Telnet SSH (OS 9) - http://www.lysator.liu.se/~jonasw/freeware/niftyssh/

For a current list of Win and Mac clients, please see http://www.openssh.org/windows.html or http://www.openssh.org/macos.html

Faculty who prefer to use a Secure client to traditional FTP from their office computers may contact lcc-support to request installation.

How much disk space do I have on the server?

Friday, July 8th, 2005

You can check your disk usage on any LCC webserver by using SSH to log on, then issue the command “quota -s” at the command prompt. The “blocks” column indicates how much space in Megabytes you are currently using. The “quota” column is the amount of space you are allocated, and “limit” column is the absolute most space you can take up before the filesystem cuts you off.

How do I connect to the wireless network?

Friday, July 8th, 2005

Please see the Georgia Tech LAWN website or contact us for more information.

Where is wireless connectivity available in LCC’s facilities?

Friday, July 8th, 2005

All of LCC’s classrooms and offices in the ground floor and 3rd floor of Skiles are covered by the Georgia Tech LAWN wireless network. The courtyard of Skiles is also included in coverage.

How often are the files on my office desktop computer backed up?

Friday, July 8th, 2005

Files that are saved on NAS (Network Attached Storage) are backed up daily

Can I get software licensed to LCC installed on my personal computer or laptop?

Thursday, July 7th, 2005

No, we can only install LCC-owned software on equipment owned by Georgia Tech.

However, some software offered by OIT is available for installation on personally-owned computers when used for business purposes. Please see OIT’s Software Distribution page for more info.

Where do I put my files on the server?

Thursday, July 7th, 2005

When you log on, you will be placed in your own private home directory. There you will see:

1. folder(s) that links to any class or project shared space (i.e. engl1101_b1, abc_project)
2. a folder called www

For individual web projects, please put your .html or .htm files in the www folder.

For shared class/group projects, please navigate to your class shared directory and place your .html or .htm files in the directory your instructor has instructed you to use.

Faculty: How do I request web server accounts for my undergrad students?

Thursday, July 7th, 2005

Send a request to lcc-support@iac.gatech.edu that includes the following information:

- the name and section of each class you are requesting accounts for, formatted as follows: engl1101_c, lcc3404_a, etc
- how soon you will need the accounts

Please be sure to indicate if your students have any special storage needs (i.e. they are working with large video files).

Welcome to the new Support site!

Friday, July 1st, 2005

Welcome to the new LCC Computer Support site! In addition to the modified layout, the site now offers an RSS feed of the latest news and announcements from the support office. The Computer Support team will continue to send all important computer-related announcements via email in addition to posting them on this site.

For more information on RSS, we recommend the following reading:
RSS @ Wikipedia.org
List of RSS feeds @ Wikipedia.org
What is RSS?

Please note that any links prefaced with the  icon point to sites outside of support.lcc.gatech.edu .

If you would like an RSS reader installed on your office computer, or if you have any comments about or suggestions for the new site, please contact LCC Computer Support.