I am still in the process of learning how RAM management works inside Linux environments, so I read alot about that topic and make some notes. Today I read an interesting blog post about how RAM is used in Linux, furthermore the comments on that article really gave me some additional information about that topic. [...]

Today I stumbled across a very interesting blog entry from Oracle’s head Linux developer, Wim Coekaerts. He talks about the freshly added support for Xen in the Linux mainline and stresses that now all Xen skeptics (who were claiming that alternatives are much better since they are better integrated in the Kernel..) will have to find new [...]

From time to time there is a point where you encounter very annoying things in open source software or while using non-free tools. One of them was qemu. As some of you might be aware of, I am a huge fan of Xen. I love the idea of using paravirtualization for almost native performance of [...]

Another non-security blog post, for those of you who are tired of Luna or GQ: Recently one of my associates at work showed me a tool which really gained my attention. It is called “shelldap”, a command line interface browser for LDAPs. Being written in Perl, shelldap tries to emulate a shell-like environment while you [...]

Today I am releasing my Simple LAN Scanner 1.0 (08th January 2011). [Download] Description The Simple LAN Scanner is a very simple LAN scanner written in Python. It scans the local network and tries to give you the MAC and IP addresses of the discovered running systems. Furthermore it creates a small log file at [...]

When you buy the Acer Aspire One netbook in a shop it is usually equipped with a Windows XP, which drains too much power from the battery and often causes lags. I decided to install the Ubuntu distribution EasyPeasy, which still drains much power from the battery, but still is better than XP in my [...]

Please view the original advisory/exploit here. The Joomla component com_restaurantguide suffers from multiple vulnerabilities. >> SQL Injection index.php?option=com_restaurantguide&view=country&id=’&Itemid=69 (id parameter is vulnerable) >> HTML/JS/VBS Code Injection (all input fields, also in the admin backend) It is possible to inject HTML/JS/VBS code into the document although XSS filters are active. Simply end the current HTML tag [...]

It seems that Xen 4.0.0 will be out soon. I am definitely looking forward to this release since I am working with Xen for years. What to expect in Xen 4.0.0: View the road map and wishlist here.

What this tutorial is about This little tutorial shows you how to keen an eye on your Linux box. Monitoring your server is something which is very important, especially for analyzing purposes. Introduction We will use Munin. Munin is a very interesting tool, it helps you tracking down the resource usage and locate possible problems. [...]

What is this tutorial about? This little tutorial shows the reader how to install the Xen Cloud Platform on a blank machine. What is this Xen Cloud Platform? What is Xen? Xen is a virtualization solution, a complete and very good description can be found here: http://www.xen.org/files/Marketing/WhatisXen.pdf Now tell me something about this Xen Cloud Platform [...]