Core Services

Author: doachs

  • Internet Bandwith Increase

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    doachs

    In an attempt to keep up with the ever increasing demand for more internet bandwith, today we increased our connection from 20Mbits to 30Mbits.  Enjoy the extra speed while you can.  I’m sure the students will find plenty of uses for it come next week 🙂

  • iChat Sounds

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    doachs

    For some reason or another the sound effects for my iChat client don’t seem to work all the time any more. I first noticed it last week. Shortly after the upgrade to OS X 10.4.4 I lost the sounds that let me know when someone has left me a message. I can quit iChat, I…

  • Email and Home Directory Downtime

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    doachs

    At about 2:20pm our cluster died.  It was back up and running by 2:30pm. One of our cluster computers died, taking email and home directories down with it.  We discovered an issue which was causing the other half of the cluster to pause and not respond to email and home directory requests.  That problem should…

  • Mailserver Downtime

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    doachs

    At about 8:30pm tonight, our IMAP and POP server died. As a result webmail and any other email client was unable to login and read messages. During this time our mailservers dutifuly stored the mail until just before 9:00pm when the IMAP and POP server was restored.

  • Firefox 1.5 and Javascript

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    doachs

    Not sure if anyone else has noticed this or not, but there are a few websites out there that cause my cpu usage to max out. I first noticed it shortly after installing Firefox 1.5 and visiting any oreillynet.com website. It appears as thought it is caused by something in the sites javascript because disabling…

  • This Weeks Status Update

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    doachs

    Microsoft WMF Vulnerability: Obviously the big story this week was the Windows WMF vulnerability. I think we caught this one early, told people how to avoid infection, and now with the Windows patch being available, are fairly safe. I am still worried that a lot of computers were silently infected with some spyware, but chances…

  • Greylisting Effective Against WMF

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    doachs

    So far so good on the WMF vulnerability. I have not yet seen any evidence of any computer on campus being infected via this route. One thing I just noticed this morning after reading the F-Secure Blog and searching our logs for robert@yale.edu, is that our greylisting software is working to combat this particular message.…

  • WMF Vulnerability

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    doachs

    As everyone should know by now, there is a major security threat out there exploiting the WMF vulnerability. For now we are trying to watch the situation closely, and get the appropriate info out there to those who need it. As a precaution, based on info from http://isc.sans.org/diary.php we are blocking the following networks at…

  • This weeks update

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    doachs

    Well, we got a lot of things done this week since it was so quiet. At times we were a little too brave and broke a few things when we should not have, but in the end a lot was accomplished. Reducing duplicate email messages – We put in place a procmail script that checks…

  • Postifx and Authentication

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    doachs

    After updating one of our 2 postfix mailservers we discovered that some email clients can’t deal with all the authentication options our mailserver presents to them. For example Eudora has an issue if postfix says it can do CRAM-MD5 as in the following example: 250-AUTH PLAIN DIGEST-MD5 LOGIN CRAM-MD5 250-AUTH=PLAIN DIGEST-MD5 LOGIN CRAM-MD5 For some…