Welcome!
I’m Koen 
. I live in Bruges (Belgium), a splendid medieval city also known as the Venice of the North.
I’m involved with computer security and I work as a member of a CERT (Computer Emergency Response Team).
I’m available as a freelancer (cudeso.be) -provided the freelance jobs do not interfere with my day-to-day job- for web-application development (Drupal, WordPress, Joomla and PHP applications), as a system administrator (OpenBSD and Linux mostly) and for all computer security related tasks.
My main interests in computers are security, web applications (PHP, MySQL, Apache), system administration and free software.
This site hosts a blog and I have a photo collection at Flickr.
I also have a site with (outdated) Linux information.
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I recently discovered a new penetration testing distribution called PwnPi, “The Pen Test Drop Box Distro for the Raspberry Pi”. Although the distribution itself is already very interesting, the list of tools provided by the distro is even more interesting. It is the ideal starting point if you want to build your own toolset. 6tunnel [...]
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The /etc/passwd file stores crucial information which is required during login on Linux systems. Fields A line in /etc/passwd is one entry for a user account. The fields are separated by a colon (:). The format is as follows (note that for the purpose of formatting the display, the line is split. A real /etc/passwd [...]
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TOR (https://www.torproject.org/) is a great project if you want to take care of your privacy. You can use TOR to proxy your nmap scans making it very difficult for the scanned network to find the source. Only scan networks that you are allowed to scan! First check that you have TOR installed. It should be [...]
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An older script that I use on OpenBSD to update ddclient hostnames. The script should run with minor modifications on Linux. If you are unable to get your public IP from a local interface then you can use dyndns.org.
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I use Dropbox to have online backups of my files. Dropbox already provides a good set of protection mechanisms (Two-step verification, …). If you need an additional level then Boxcryptor is worth having a look. Unfortunately Boxcryptor is not available on Linux but it is compatible with encfs. The blog of Boxcryptor has a post [...]
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