Author: arved

I just finished my first KDE Applet, it displays how many minutes the students in our computer rooms are allowed to surf.
I was impressed how easy it was to implement the I/O and the timer, but I am still fighting with the GUI Layout. Here are two screenshots:

I haven’t managed to use a QVBoxLayout as I originally planned, so I am using static sizes, which sucks because if the taskbar height is reduced, the QLCDNumber keeps its size. The Code is here

The university’s WLAN currently consists of 60+ Accesspoints. We are planning to double this number to cover whole buildings in the near future. Monitoring is currently done by a shellscript/MRTG combination that monitors Reachability, Configuration changes, Associations and Traffic.
Now we are evaluating buying a Cisco product called Wireless LAN solution engine for $$$$.
It is basically a pentium-machine running an IOS like Operating System with a Web/JavaApplet Application.
It has tons of features including statistics of everything and a Radio Manager that monitors the coverage, interferences etc. Of course it also includes Configuration and Firmware management.
Unfortunately I haven’t found any neutral reviews on the Net. Only Product information and a default password vulnerability earlier this year.
What speaks against it:

• The Handbook consists of 1102 pages.
• It requires specific Browers and specific versions of Java Plugins. For Cisco Works, another Network Management Tool we use, I have not found a working combination of Browsers/Java Plugins that works on FreeBSD.
• It needs to be updated with every new Firmware version Cisco releases for its Accesspoints
• It requires a lot of effort to use it optimal:
  • A LEAP setup needs to be established between the Accesspoints
  • For every Accesspoint you need to collect data by running running around the covered area with a Laptop
  • Sometimes the Radio Manager needs to recalculate its data, which requires the WLAN to be shut down
  • Maps and Sizes of every building and every floor need to be scanned and imported into the WLSE

I tend not to buy it, but I am not sure if this are just my predjudices against closedsource Software. I would be glad to hear a review from anybody who bought this product.

Today I skipped through PlanetSUN and discovered an interesting article about the relationship between industry and university.

Continue reading “The Future of Research”

My university has WLAN in the lecture halls like most universities nowadays although most of them have not defined a usecase.
Oliver Wrede wrote an article about Notebook conferences, where he tries to verbalize how Network access can be used *during* conference and teaching talks. He presents the SubEthaEdit Notes from the blogtalk conference as an example. What are they smoking at blogtalk? These notes are nearly unreadable, and as summaries really bad.
Philipp writes his summaries after the talks while he is traveling home by train, they are much better to read, although (or because) they are written by only one person.
Volker Weber’s observations are much more realistic.
I only take my notebook into boring classes and talks, because if the topic is something more serious than “social software” you have to concentrate 100% on the speaker to get an idea what they are talking about and to not loose track.