Author Archives: benfranske - Page 24

News Source for IT in Education

Those who work in higher ed certainly are familiar with the Chronicle of Higher Education which is the trade paper du jour. You may be interested to know that the Chronicle also has a “Wired Campus Blog” which is devoted to technology news for educators and educational institutions.

Ungoliant and Shelob Protect Networks From Themselves

Last week IT professionals from the University of Indianapolis demonstrated their network virus detection and quarantine tool, called Shelob, at the Educause 2005 conference in Orlando, FL.

Shelob was designed to stem the rapid spread of network-propagated viruses by combining several existing protocols and services. This server-based management tool, capable of removing infected computers from the network, went into production in fall of 2004, monitoring all nonwireless traffic from resident halls, computer labs, and desktop computers.

My understanding is that the product, built on open source software, detects infections and automatically moves infected systems into a quarantine VLAN which points them towards a web page explaining the problem and how to fix it. The programs designers are working on gleaning up the project to make it usable by other instituions and groups through the Ungoliant project. Handouts from Educause and additional information are avilible at that site.

Space Photography

While NASA makes a lot of public domain images availible via its six websites devoted to imagery, I find that some of the most stunning photography can be found at the third party “Project Apollo Image Gallery” site. Among these images you’ll find some truly amazing photographs of both earth and space.

Cool Desktop Wallpaper

I don’t think I’ve shared this link here but there’s a really cool site with “Nearly-Live Planetary Desktop Backgrounds.” It’s basically a site that takes a static satellite map combines it with current cloud data and shading to show day/night and generates an hourly image to use as a desktop background. The site also includes instructions for automatically downloading and changing the background hourly so you’ll always have a current world view.

Satellite Imagery Virtual Globe

It was brought to my attention that NASA has released a product that shares some similarities with the popular Google Earth program. While it doesn’t include the comprehensive mapping data fo Google Earth, World Wind does had some pretty cool features. For example, using GLOBE data you can superimpose weather information on the virtual globe, SVS data to watch storms develop or MODIS data to see where current natural world events are taking place. NASA World Wind is a fun and educational way to look at some of this cool (and free!) government data.

When the command line says it best

Sometimes nothing beats a command line tool. Especialoly if you’re writing batch files it’d helpful to have a way to control your operating system from the command line. Microsoft has a list of the command line tools for Windows XP on their web site. If they won’t do you may want to check out the CMD/Command Prompt Tools for 32 bit Windows site which has a number of third party command line utilities.

VoIP Peering

One of the advantages of VoIP is the ability to bypass the PSTN alltogether when making a VoIP-VoIP call. Unfortunatly it’s still relatively hard to do that but at least two websitea are aiming to change that. SIP Broker allows people with VoIP servers to register and setup a peering so inbound and outbound VoIP calls can be routed using an assigned provider prefix between users. For example anyone on a VoIP network with access to SIP Broker can call me by getting into the SIP Broker dialout for their service and then using my povider code “*363” followed by my extension “3711”. IAX Broker is a similar service that works using the IAX protocol instead of SIP.

Internet Downtime and Uptime

A few weeks ago Cogent and Level3 (two tier one ISPs) had a business dispute and “depeered” causing a problem preventing many people from getting to certain websites for about a week. Last week Level3 had some more issues with a bad router upgrade that essentially removed them (and all their customers) from the internet for about 4 hours (although it was during the middle of the night in the United States).

Two sites I like to visit to check on internet-wide problems are the Internet Traffic Report and the Internet Health Report. ITR gives you a good geographic overview of packet loss on the internet and IHR gives you delay and availibility statistics between each of the tier one carriers.

Another great resource is the North American Network Operator’s Group which has a mailing list where major internet service providers discuss things like outages. You can see an example of the discussion that took place last week on this page and the first mention of a problem in this message.

An Open Letter to ABC Affiliates

I recently read about a letter written by the ABC affiliate association president to the head of ABC. It seems that the affiliates are upset about the recently announced licensing of ABC’s ‘Lost‘ television program for distribution via the Apple video store. I must say that I am both disappointed and underwhelmed by this predictable letter from threatened affiliates.

For years networks have relied on so called “appointment viewing” of their shows but this model does not seem to interest the iPod wearing, Xbox playing, Tivoing and all too busy generation of today. The time where the family would gather around the radio each week to listen to the latest installment of Fibber McGee, Burns & Allen, Jack Benny and Richard Diamond. Today our lives and the lives of our children are filled with work, school, sports, music lessons, debate team, play practice, scouts, yearbook, medical visits, twenty-four hour grocery shopping and all the other things every American family wants to partake in. We no longer clear our schedules to watch a TV show. Empowered by timeshifting technologies such as the programmable videocassette recorder and the digital personal video recorder many of us now watch our favorite shows on our own terms. Meanwhile television stations and networks have been neglecting the radical shift in viewing habits hoping they would just go away. I applaud ABC for recognizing this is not the case. Rather than be preempted by the rising star of the audio and video podcasts such as This Week in Tech, DigitalLife TV, Systm and others ABC has taken the lead by taking the content to the consumer in the format they want.

This is smart on the part of ABC for a couple of reasons. First, they have jumped ahead of the other major networks by cutting this deal early on. Secondly, they have started a trend of paying for mobile video content. Think about it, if consumers can get used to paying for mobile TV content this early in the game ABC will have paved the way. It’s much easier to do this now than after consumers become accustomed to free content such as the podcasts mentioned above. If subscription supported mobile video content becomes the norm ABC will have gone a long way towards making sure it stays a relevant player in the video production and distribution game for some time to come.

Of course, all this progress comes at the expense of the affiliates and they know this. You’re affiliate probably won’t be going off the air today or tomorrow but with this deal they see the writing on the wall, traditional TV distribution will eventually die. Of course they would like to prolong that as much as possible. What I would have liked to see instead is a commitment to local programming by the affiliates. People are still going to want their local news, sports and weather. What if the affiliates decided to embrace this personal media empowerment and worked a deal to offer mobile audio, video and on demand web versions of their local newscasts? Some of the affiliates have played with web video but it’s clear the main business is still the broadcast news. By adopting a system like the video podcasts mentioned above local stations could offer news updated throughout the day that viewers could download to their media devices and watch or listen to on the train in to work, over lunch or on the trip home.

The world of broadcast media is changing but that doesn’t mean the affiliates need to be left out in the cold. Instead they should be banding together and working out a plan for offering RSS based local audio and video content to the consumer. Make it inexpensive or free and advertising or sponser supported. Whining will get them nowhere, if they don’t change with the times they will be left behind. On demand internet media has arrived for geeks and before long everyone will be on board, either that or they’ll be “Lost” themselves.

Open Source Webmail Clients

For a long time I’ve been running SquirrelMail to provide webmail for my users. It does some things really well like allowing me to tie it into my Amavis/SpamAssassin spam and virii filtering solution on a per virtual-user basis. On the other hand the usability is not so great which is why I’m excited to see a new crop of AJAX powered webmail solutions on the horizon. For those not familiar AJAX lets you make web apps much more like desktop apps ala Google’s Gmail. Zimbra, communik8r and RoundCube have all come to my attention but none of them is quite ready for prime time yet. I hope that at least one of them stays an active project and allows for SquirrelMail style plugins which are essential to my webmail and need to work in a complex MySQL virtual user and Amavis per-user environment. If anyone else knows of any great webmail packages I haven’t seen please let me know!

*Edit: Based on the number of Google referred hits to this page I’m guessing that a lot of people are looking for a better open source webmail package for their mailserver. If you find one you like please post a link in the comments section and share your knowledge!