Oracle Systems Maintenance, Saturday 12/27 - Sunday 12/28

The Oracle Applications and some dependent services will be unavailable for mandatory system maintenance beginning Saturday, December 27 at 5:00PM and ending Sunday morning.

The Data Warehouse (Cognos) is expected to be available during this time.

Please understand that since the IMSS applications are tightly integrated, applications other than Oracle may be affected. If you encounter any problems, please try your transaction again at a later time. For questions or concerns, please contact the Help Desk via or x3500.

Red Hat Proxy transitioning to Satellite on 12/1/2014

Effective 12/1/2014, the IMSS-run proxy server which registers campus Red Hat systems to receive updates will be retired and transitioned to a new Satellite server. In order to continue to receive RHEL updates, you will need to download a new script to register your systems to receive updates. 

Instructions on how to obtain this new script can be found on the Caltech software webstore. If you previously ordered RHEL from the software webstore, you can find these updated instructions in your software order details:

  • Go to and click on Log In
  • Enter your access.caltech credentials
  • Click on Your Account/Orders at the top of the page
  • Find your previous RHEL order and click View Details
  • Click on the link Instructions for obtaining Red Hat updates
  • Otherwise, simply place a new order for RHEL to obtain these instructions. 

Also note that effective 12/1/2014,, a former RHEL resource, will be retired. 

If you have any questions about this, please contact us at, request type IMSS > ​Software Licensing & Distribution > Other.

Update your Matlab license file by 12/11/2014

IMSS will retire the long-running Matlab triad license servers on December 11, 2014. They will be replaced by a single server, which is now running concurrently. If you are using a network installation of Matlab, please update your license file. This will ensure that your Matlab network installation accesses the new license server and will prevent a disruption of service once the older servers are retired later this fall. For instructions on how to obtain and update this license file, click here.

NOTE: Standalone installations do not need license files updated since they do not require network access to run. However, if your standalone installation displays a notice that the license will expire within 60 days, you will need to renew your license for another year. To renew your license, please follow the instructions located at

Bash "shellshock" vulnerability

A security problem with Bash was publicly disclosed on Wednesday, 9/24. Bash is a very popular operating system component known as a "shell" that comes with all versions of Linux and Mac OSX, as well as other systems. While this vulnerability has been present for many years, it was only discovered recently. As soon as IMSS became aware of the problem on 9/24, core IMSS systems were immediately patched. Less critical systems were patched or mitigated by the following day 9/25. As updates become available, IMSS strongly urges you to apply security updates to any computers you personally run.

For older versions of OSX where official patches aren't available, here are some instructions for patching bash:

US CERT advisory:

Plain-English explanation of the nature of the vulnerability, in a 4-minute video:

Caltech has a mailing list for announcing computer security issues to campus system administrators and other interested parties:

IMSS recommends updating Java

Microsoft's recent Windows updates include an update to Internet Explorer that blocks older versions of Java. If you encounter issues using Java-dependent applications after applying this Microsoft update, please update your version of Java. Instructions on how to download and install Java can be found at

Additionally, IMSS recommends downloading and installing a custom Java configuration file on your computer. Installing this configuration file will further assist with security and compatibility with IMSS applications and it will prevent persistent, yet harmless, security warnings from appearing when using specific IMSS applications. Instructions for downloading and installing this file can be found at

IMSS would also like to remind you that you can avoid any potential Java issues with Kronos by using Kronos Limited instead, which does not require Java to run. To use Kronos Limited, go to

Lastly, note that IMSS Managed Computing customers do not need to take any action. IMSS will update Java and will install the custom configuration file for managed computers during our maintenance window on 8/21/14.

For questions or further advice, please contact the Help Desk (x3500,​

Beware Fake Microsoft "Tech Support" Phone Scams

Some campus customers are receiving calls from people claiming to be from Microsoft regarding a supposed computer problem. The callers offer to fix the problem and request remote access to the customer's computer. This is a very common scam with typical goals of installing malicious software on the victim's computer, or obtaining the victim's credit card number (to pay for the unsolicited, but fake "tech support"). Microsoft will never call you like this. More information about this type of scam can be found here: If in doubt, always feel free to contact the IMSS Help Desk for questions and advice.

Mailman mailing lists moved to

IMSS has moved Mailman mailing lists to new infrastructure. Mailman's functionality and look and feel remain the same, however mailing list locations (URLs) have changed to with the list name appended. While website redirects have been set up so that old links continue to work, we encourage you to update your links and saved bookmarks. If you have any questions about this, please contact the Help Desk (x3500,

Improvements for identifying spam email

IMSS has recently implemented a few changes to our spam tagging service. The word SPAM is now prepended to subject lines for spam tagged messages, which will make it easier to see that a message has been given a score that indicates it is likely spam. We also have a new rule that spam tags messages that originate from off campus, but claim to be from the IMSS Help Desk. This will also make it easier to identify phishing messages that ask for your access.caltech username and password. If you have any questions about these changes, please contact us (x3500,


Don't Be Fooled By Messages Asking For Your Caltech Username And Password

Many campus users are receiving email claiming to come from an IT support group (sometimes even IMSS or the Help Desk), asking for the user's password and other private information, or requesting that you "verify your account" by logging into a website. Please be aware that this is a form of security attack known as "phishing" designed to fool users into giving their usernames and passwords to an attacker. Please do not reply to these messages or visit any websites they may refer to. IMSS does not recommend providing usernames and passwords by email, and IMSS will never ask users for their passwords by email or by phone under any circumstances. When visiting a website, be sure to check the address bar on your browser to confirm that the site you're visiting is the one you were expecting. If you receive any confusing or worrisome email messages about any of your Caltech accounts, we strongly recommend contacting the IMSS Help Desk (395-3500 or or your local system administrator. In the event that your password is exposed to an attacker, please be sure never to use that password again, for any purpose, and particularly never for the account it once belonged to.