julian-fietkau.de

This Lightning Talk was held in the KunterBuntesSeminar organized by Computer Science students in Hamburg, it was the second one of the session and partly referenced the talk I held directly beforehand.

I explained how I managed to find out from my analytics data how to identify a spam bot that was badly implemented in such a way that it violated important web standards, thus triggering errors. By being stupid, the author of the spam bot relieved me of quite a bit of diagnosis-related work.

This Lightning Talk was held in the KunterBuntesSeminar organized by Computer Science students in Hamburg, it was the first one of the session.

The subject was Piwik, a free and open source tool for website analytics. I explained the basic idea and showcased the possibilities for anonymization and data protection as well as other advantages of Piwik.

Abstract: Blogging is an interesting phenomenon not only from a socio-cultural and medial perspective. The "blogosphere", as the collective set of all blogs and their authors is sometimes called, has adapted and developed a whole range of interaction patterns. In this paper, I give an overview of the methods which bloggers use to communicate with their readers and with each other, and for what kind of communication they are typically used. Furthermore, blogging is explained in the context of the medial development of our culture.

This paper has been written for the Computergestützte Kooperation course. I chose to develop the topic of blogs mostly towards interaction patterns.

This talk was held in the seminar for the course Parallel Programming and dealt with general purpose computation on graphics hardware and fundamentals of stream computing. Building on previous knowledge about computer architecture and parallelization strategies, I contextualized GPGPU and introduced stream computing as its background. I then demonstrated a few modern languages and technologies (CUDA, OpenCL) and briefly touched upon compilation processes (NVIDIA PTX, AMD IL). The talk ended with perspectives on programmability and efficiency of the technologies and a short overview of the latest trends.

This talk was held in the course Computer-Supported Cooperative Work.

I started by explainig "blogging" as such and what it's about, then going into interaction patterns frequently found on blogs. Among those were comments and their structure, Trackbacks and Pingbacks as well as social media widgets. I ended with two scenarios concerning anonymous blogging and the use of blogs for knowledge management by enterprises, respectively, as well as a brief look at a possible future for blogging.

This lightning talk was held in the KunterBuntesSeminar. I introduced the topic with the first slide and then showed live how to transition from Thunderbrid's own notifications to using Notify OSD (and also the indicator applet, incidentally) on a typical Ubuntu Linux desktop.

For the downloadable slides here, a summary of what to do has been added.

In this Lightning Talk, held at the KunterBuntesSeminar, I presented a small tool called sshuttle and compared it to other, more well-known software solutions.

The Department of Computer Science at the University of Hamburg uses, among other things, IP-based authentication for access control. This means that there are some resources, e.g. on the web, which can only be accessed from the Dept. of Computer Science IP subnet. To access these resources from home, it is necessary to create and use some sort of connection to the CS net. This can be accomplished by connecting to the VPN or by establishing an SSH connection. The tool I showcased, sshuttle, promises a new way to solve this problem by tunneling IP traffic through a simple SSH connection using iptables. This idea has several advantages over the alternatives.