There is a great video by Matt Parker, explaining the maths behind the game Dobble. If you haven’t checked it out yet, please do it now, its great fun. The Dobble cards form a finite projective plane of order 7, and Matt visualize the plane by laying out the cards in a 7×7 square. The […]
Tomten anordnar varje jul en stor gala för alla nissarna för att tacka dem för arbetet med alla julklappar. Alla nissar samlas i den stora aulan. Tyvärr har det i år blivit högsta mode bland nissarna att ha en hög svart cylinderhatt i stället för den traditionella luvan. Detta ställer till problem under julshowen, eftersom […]
I needed to debug at Powershell script that uses MySQL Connectior .Net, and wanted to enable Tracing. This is fairly easy if you are using ODBC, but a little different when using the .Net Connector. The basic outline is to use Tracing in the System.Diagnosticts namespace. All the examples I found was based on using […]
En datadiod är en nätverkskomponent vars syfte är att garantera enkelriktad närverkskommunikation. Dioder kan användas för att flytta information mellan nätverk som normalt kräver ”fysisk separation”, eller ”galvaniskt skilda nätverk”. Vid de tillfällen du funderar över att använda en datadiod rör du dig förmodligen i riktigt känsliga IT-miljöer. Då är det viktigt att komponenter du […]
Today i struggled with creating a new Admin account in my Clavister Firewall. There where no hits on google on the specific error message, so I decided write about it. After all, this was the original intention of this blog 12 years ago. Since Clavister does not support LetsEncrypt certificates I was trying to make […]
Due to mysterious reasons, I have lately interested myself in old Mac hardware. I suddenly have some PowerPC based iMacs in my basement. I have never been a Mac user, not even during the later i386 era, but I have always been a big fan of Mac hardware. During my journey learning about Mac OS […]
I have recently found a Cartridge for my C64: The Expert Cartridge. I have very little information about this cartridge, I wonder if its a early or late version? I have found a manual of version 3.2 on the internet, but I am currently missing the disk that is mentioned in the manual. Here are […]
I have recently started to digitalize some old VHS tapes from my childhood, and it has been like falling down a rabbit hole like Alice did. I will not go into the details, but after you have played with the mediocre software that comes with the grabber card for a while you will end up […]
I have recently started to digitalize some old VHS tapes from my childhood, and it has been like falling down a rabbit hole like Alice did. I will not go into the details, but after you have played with the mediocre software that comes with the grabber card for a while you will end up […]
Let’s Encrypt is a free, automated, and open Certificate Authority, and it is really great! Automatic renewal has really changed how we think about host certificates in our servers. The primary automation client for Let’s Encrypt is certbot, and is can easily help you with securing your web site with HTTPS if you run one […]