Linux networking articles

Linux Journal has published several interesting articles on Linux networking. Here are some of the most interesting of them. Queueing in the Linux Network Stack tells that packet queues are a core component of any network stack or device. They allow for asynchronous modules to communicate, increase performance and have the side effect of impacting

Arduino running on x86

Dev boards based on microcontrollers and ARM System on Chips are everywhere, but smaller boards with x86 processor has been rare. I just saw The Intel-powered Arduino article that tells about Arduino-compatible Intel Galileo board. Galileo is a microcontroller board based on the Intel® Quark SoC X1000 Application Processor, a 32-bit Intel Pentium-class system on

Happy 20th birthday Debian!

Today is Debian‘s 20 anniversary. Debian is a free operating system (OS) for your computer. Debian started as Linux distribution, but Debian systems currently use the Linux kernel or the FreeBSD kernel (work is in progress to provide Debian for other kernels). Debian was begun in August 1993 by Ian Murdock, as a new distribution

Linux for School Exams in Finland

Slashdot informs (and I have seen it also on other news) that the Matriculation Examination Board of Finland (Upper Secondary School Exams) has opened an international hacking contest to find flaws and exploits in Digabi Live. Digabi Live is a Live Debian based operating system to be used in the all-digital final exams by the

Are You Sure This Is the Source Code?

Software freedom is an interesting concept, but being able to study the source code is useless unless you are certain that the binary you are running corresponds to the alleged source code. It should be possible to recreate the exact binary from the source code, but a simple analysis shows that this is very hard

Ethtool and iftop

Ethtool allows you to modify your Ethernet adapter settings inside of Linux. Fun with ethtool article tells you how you can use it for various tasks. You can easily get driver information and statistics with command: ethtool -i eth0 Ever had to trace what physical network card was recorded in linux as ethX? Follow the


The recommended way when you need to do SSH communications (let it be SSH or SCP) from a script is to use secure public key authentiaction to authenticate with the other end. With this you can open SSH connections without putting any passwords to your scripts. But sometimes the best solution is what you can

Arduino Yún has WiFi connectivity and Linux

Arduino platform seems to interest many Internet of Things developers. There are now many Arduino compatible platforms with wireless connectivity as you can see in my New interesting Arduino platforms article and it’s comment. Also Google has done some Arduino based IoT. Arduino launches Yún for WiFi connectivity under Linux article tells that Arduino has

Unix box in pocket

Addressable markets for high-end phones article has some interesting statistics: There were about 5.2bn adults on earth at the end of 2012 and roughly 1.1bn of them had ’smartphones’ at the end of 2012. Around 900m of smartphones ran either the iOS or Android. Both iOS and Android are based on Unix technology (iOS is