Technology Services

Category: Core Services

  • Wireless in Lund

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    doachs

    In preperation for tonights game, we have added a wireless access point to Lund. It is a nice, strong, wireless device that should cover a rather large area pretty well. If anyone uses it, I’d like to hear about your experiences. It is a little bit of an unusual setup for us because it is…

  • Res Hall Traffic

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    doachs

    Something strange happened on our res-hall network again this morning. At about 7:00am this morning there was a ton of broadcast traffic. Something like 50k or 60k of traffic where we normally see about 5k-10k. Another symptom was that all of the switches in the dorms were seeing really high cpu usage. Especially the slower…

  • Spamassassin server died

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    doachs

    One of our two spamassassin servers stopped working Saturday at about 9:00am and was not fixed until 8:00am Sunday morning. During that time about half of all email being sent to spamassassin was not being checked and was just delivered instead. So you probably saw a big rise in spam in the past 24 hours.…

  • Internet Bandwith Increase

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    doachs

    As of about 6:00pm tonight, our internet bandwith has doubled from 10M to 20M. It’s probably maxed out by the time I finish typing this, but oh well. Was good while it lasted 🙂

  • Solen rebooted

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    doachs

    In case you noticed everything screetching to a halt tonight around 7pm, solen had a kernel panic and had to be rebooted. About 20 minutes later, it was back up and running again.

  • International Building now at a gig

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    doachs

    The network connection for the International center bas been bumped up from 100Mbit/s to 1000Mbit/s as of about 11:30am this morning. Hope that makes some things a little bit faster.

  • SpamAssassin and Horde’s IMP

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    doachs

    Unfortunately due to the way that Horde’s IMP webmail system inserts the IP address that was used to connect to the it in the email headers it sends, SpamAssassin thinks those messages are coming from dynamic ip addresses. To help work around this issue, I modified our SpamAssassin rules such that any email sent via…

  • SpamAssassin Upgrade

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    doachs

    After testing the latest version of Spamassassin on my account for the past few days, I have upgraded all our Spamassassin servers from 3.0.0 to 3.0.2. 3.0.2 includes a few bug fixes and other small enhancements. If anyone notices a drastic change in spam checking effectiveness, please let me know.

  • Squid on Fedora Core 3

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    doachs

    Due to the way SELINUX is setup on Fedora Core 3 ( FC3 ) I discovered that if you try to move squid’s cache directory, you must tell SELINUX that the new location is ok. To do that, use the following command: chcon -R system_u:object_r:squid_cache_t /directory/where/cache-is

  • Learned Something New

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    doachs

    As anyone who as worked with Linux, iptables, and ftp knows, firewalls and ftp can cause issues. I already knew that if I was using iptables I should use the ip_conntrack_ftp kernel module. So I had added “insmod ip_conntrack_ftp” to the /etc/rc.local file so it was inserted at boot. However what I didn’t think about…