Syslog-ng intrusion detection

There seems to be a problem using the file() destination for /proc files in Linux. When implementing Securing Your Server With Syslog-NG you will run into it. Please read below.

(Not) rooting RK3066 systems

The update updated, 2014-04-28: unbricking is fairly easy, see Please note that I received some reports from people that tried to flash their RK3066 stuff – but it would not boot afterwards. And in fact, that’s what I experienced when I tried to flash my Minix Neo X5.

Securing your server with Syslog-ng

There are many programs that help you secure your servers. There are simple firewalling programs and there are complex network intrusion detection systems. Depending on your demands, there seems to be a solution for everyone. Unless you’re picky and you think you can do better – like I did, when I wrote my own combination…

Knoeien met de cijfers van het CBS

Het Centraal Bureau voor de Statistiek doet zijn onderzoekjes anno 2010 nog steeds met een Windows-programma: u moet Microsoft Windows gebruiken om de door het CBS gevraagde gegevens te verzenden. Dat levert een statistische vertekening in de cijfers op (“gebruik van open source software”); erger is het, dat het dataverzamelingsprogramma zo lek is als een…

MFOC improved

When I started using MFOC, from a the description (in Dutch) at, I immediately ran into the problem described here. A bit strange seemed, that reading the card sector after sector with 10 different predefined keys did not crash the reader, while immediately after starting to try to calculate new keys, the reader would…

De perfecte misdaad

Vandaag is er veel te doen over de hack die beschreven staat op Wat nog even ontbreekt, is de methode om echt ondetecteerbaar gratis te reizen: de perfecte misdaad.

Walkera helicopters under Linux – part 3

In part one we built a kernel module and put it somewhere in the filesystem. In part 2, we changed the inputattach utility to be able to use the new transmitter. Now we’re ready for the real part: install the Heli-X simulator.

Walkera helicopters under Linux – part 1

A couple of months ago, I bought a Walkera Dragonfly #04, just for fun. While actually flying an RC helicopter is great fun, sometimes you will want to use a simulator. As Linux is my platform of choice, I tried using the Walkera transmitter with a serial cable to run a heli-sim. I found out…