Archive

I was on the verge of creating a post about the TSL/SSL handshaking, when I discovered a blogpost about the very same subject. Since I don’t think it’s of much use to blog about exactly the same …

This post is not so much for developers as it is for the managers and bosses from those developers. As you probably know by now, managing software engineers (or programmers) is not an easy task. They …

Autoincrement is sometimes called a “poor-man-sequence”. Sequences in other DB systems are counters that can be used for automatically number fields when inserting data, just like autoincrement in …

Oauth is a very popular authentication mechanism used for a lot of web applications. And not without good reasons. It is relatively easy to implement, has different flavours (2-legged, 3-legged …

For the readers who get the Aaron Sorkin reference in the title, do not be alarmed: this will NOT be my final blog post, just the last of the season. One year ago I’ve decided to do some (active) …

Today I stumbled across an odd problem which took me about an hour to figure out what was going on. It had to do with mt_srand(), where it looked like it didn’t work properly. I needed a repeatable …

SSL and virtualhosting on 1 IP address? I can’t be done! Well, this might have been the case a few years ago but times has changed. Let’s explore the possibilites to have multiple hosts running on the …

Did you know you can write a webserver in awk or that sed supports conditional jumps? Probably not… These tool (languages, actually) are much more powerful than most people know. The sed & awk …

Today I overheard two colleagues discussing one of my favorite subjects: encryption. The discussion was about that encrypting data (with a normal block cipher) was working perfectly in ECB mode, but …

Most people I know use sed for simple and fast translation of some keyword in files. For instance, changing ports and tags inside configuration files during deployment to production servers. This …