Entries by Stefan Helander

How does Internationalized Domain Names (IDN) work?



By the introduction of Internationalized Domain Names (IDN) it is now possible to register domain names on the Internet, containing regional characters, like for example www.räksmörgås.se.This is possible for a number of the Top Level Domains (TLD), like .se and .nu.

Mac-adress lookup tool



When troubleshooting networks, when there is an IP-address conflict for example, it is sometimes useful to lookup the vendor of the mac-addresses. This way you can identify the brand of the conflicting host. A tool for doing this is found here. It contains information about both ethernet and bluetooth manufacturers.

VirtueMart installation problem (Joomla!)



If the installation of VirtueMart version 1.1.3 for Joomla! 1.5.10 fails, a manual installation is needed. The error message says that some critical components of VirtueMart are missing. In addition to the following instructions, read the VirtueMart installation manual. Download the VirtueMart Manual Installation package for Joomla! 1.5 from VirtueMart website. Unzip the contents of the archive to […]

Ubuntu eee: Intermittent DNS problems with Windows Vista Internet Connection Sharing (ICS)



When connecting an Asus EeePC 900/901 running Ubuntu eee 8.04 (‘Easy Peasy‘) to the Internet through a Windows Vista machine running Internet Connection Sharing (ICS) and you are experiencing intermittent DNS-problems, the problem can be related to IPv6 being enabled but there is no IPv6 Internet connection (only IPv4). In Firefox there is a DNS-error […]

Ubuntu eee: Youtube video problem



In Ubuntu eee 8.04 for Asus EeePC 900/901 (‘Easy Peasy‘) there is a problem when trying to look at Youtube videos. Almost all videos gives a message saying that it is not currently available. The problem is the flash player included in the Ubuntu eee installation. To resolve the problem: Try do uninstall ‘flashplugin-nonfreebeta’ using […]

WordPress blog: Problem with uploaded images



In WordPress blog software version 2.7.1 there is a problem after a default install when uploading images. The images are stored in the ‘wp-content’ folder but referred to with ‘wp-content/uploads’ path. The result is that uploaded images can’t be used in blog articles. To resolve this problem, click on Settings, then Miscellenous. Note that the […]

Ubuntu eee: Asus EeePC 900/901 WLAN against DLINK DI-624+ router problem



When using Ubuntu eee 8.04 (‘Easy Peasy‘) on an ASUS Eee PC 900/901 and you try to connect to a DLINK DI-624+ wireless broadband router with WEP security enabled, the network manager in Ubuntu eee keeps displaying a dialog asking for the WEP pass phrase, even though is entered correctly. The problem is the “Super […]

osCommerce templates



To get your own style and feel of your osCommerce webshop there are different options at hand. One is to have someone to tailor your own design. This way your web shop will be truly unique, but of course at a cost that can be high. Other options are using free templates or buying a […]

Internet related threats



On http://www.cromwell-intl.com/security/ you will find a number of articles related to Computer System and Network security. It covers chryptography, privacy tools, computer forensics, authentication, intrusion detection and network monitoring. GRC Shields Up! tests your firewall from the outside and reports what you are exposing to the Internet. At CERT, Computer Emergency Response Team, you will find up […]

What is my current IP-address?



When you need to know what your current IP-adress on the Internet is, there is a tool: http://myip.heltech.se This page displays your current IP-adress, your reverese DNS name, how your browser identifies itself and if you are accessing the Internet through a proxy server. This is the information servers that you visit on the internet […]