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Homegrown Software Saves a Lost Autistic Man

June 25th, 2008 No comments

image Recently I was reading an article here which shows how an application called “Search Tracker” guided searchers to an autistic man named "Keith kennedy late Sunday in a wooded area.

 

The software calculates the possibility that someone would be lost in certain areas based on density of plant life and wooded areas.

 

More on this story at LinuxInsider.

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Time Warner Cable: 2.8Mbit Upstream

June 20th, 2008 1 comment

Hey- Apparently Time Warner Cable doesn’t rate-limit UDP packets (as far as I can tell).

 

Here is the scenario:

Time Warner Turbo (15Mbit down / 1Mbit up) connected to OpenVPN (10mbit limit) at a local data center.

 

Here is what the connection path looks like:

Time Warner Cable –> OpenVPN –> Squid Proxy –> Website

 

At first I didn’t know what to think – I can normally achieve around 1Mbps up but I was getting over 2.8Mbit/sec upstream! I thought to myself “This has to be Squid caching the upload test data” so I altered the Squid configuration to explicitly NOT cache the data from SpeakEasy’s test site.

 

Here’s what I found:

 

Before
image
After (10Mbit limited by OpenVPN)
image

 

How can this be? Well it might have to do with the fact that Time Warner doesn’t monitor UDP traffic (at least to OpenVPN UDP 1194). After reading many documents, it’s evident that traffic shaping TCP is easy and TCP comes with traffic shaping mechanisms and UDP does not. My speculation is that Time Warner simply drops packets when rates are too high, causing TCP to (inherently) re-send data that is lost.

 

Quick HowTo

The first thing you should do is grab a copy of Untangle. It’s quick and easy to set up OpenVPN out of the box.

  1. Obtain OpenVPN
  2. Bring OpenVPN online at a Data Center or as a VM on your leased server at a Data Center.
  3. Connect to OpenVPN from your Time Warner connection.
  4. Start a VM with Squid caching proxy running. Make sure that you have access to this VM from your VPN client (configured in Untangle)
  5. Start Squid
  6. Open your favorite browser and point it to the squid proxy (private IP address via OpenVPN)
  7. Access speed test sites (all OpenVPN traffic is UDP so you should be able to achieve speeds without using Squid)
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Which is better? Firefox 3 or IE 7

June 20th, 2008 No comments

image

Well now that Firefox 3 is out does IE7 have a chance? Personally I’ve used Firefox 3 quite a bit faster (even in its release candidate stages) than IE7.

 

Please vote below and show us who really is the winner.

{democracy:2}
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GiveawayoftheDay.com – Xilisoft Video Converter

June 17th, 2008 No comments

imageToday I downloaded and installed Xilisoft Video Converter. It seems to be a pretty promising tool as it can convert almost any video/audio format to another video/audio format. This becomes very helpful when converting those old VHS tapes to DVD’s or trying to get your favorite format to your iPod or iPhone.

Better hurry – This download won’t last long as they have you activate it during the offer. Keep in mind that applications on givawayoftheday.com typically aren’t supported (because they’re free).

http://www.giveawayoftheday.com/xilisoft-video-converter/

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Where’s FireFox 3.0?

June 17th, 2008 No comments

Well, I woke up today and I remembered that today is “Download Day”  but wait…. spreadfirefox.com is still the same… where’s my FireFox? Here’s what they have to say:

image

Check out the Mozilla wiki that tracks their process.

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