Upside Downternet v2.0

I’ve always wanted to implement upside-down-ternet, but lacked the resources. But now it’s 2016 and you can make your wifi-stealing-neighbour’s web browser do all the hard work. This means that a simple OpenWRT router will have enough power to flip the internet – all of it, except for the ssl-protected areas. Update 2019/2020: this site…

Synology Crash Recovery

So, you own a Synology Disk Station and a disk broke. You messed up by trying to replace the wrong disk. You tried to fix it by reinserting the right disk but that didn’t help. Then you messed up even further by trying to change the volume – or something. You can’t even remember exactly…

An IPv6 MTU path discovery bug

While installing a new server last week, my (SSH / TCP) connection seemed to suffer from some sort of hanging; randomly. I tried to figure out what was going on and it didn’t take long to find…

IP addresses for your Hetzner machine

We lease a couple of machines at Hetzner.de and recently, I looked to improve my initial Easy Setup manual, so I could also use the IPv4 “main” address for a virtual machine. This leaves the main server (the “host”) without an IPv4 address. Please read below how to proceed.

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 https://valentijn.sessink.nl/?p=517 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.

Oude GPS-tracks

Oeps, opeens zie ik dat mijn GPS-tracks Kopenhagen – Amsterdam helemaal niet gelinkt staan. Hierbij alsnog (2 jaar oud).