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Whether you're an experienced system administrator or a Linux beginner, whether you're managing an enterprise-grade network or just your home network, you must be aware of security issues. One common mistake is to think that if you're a home user with few world-facing machines you're exempt from malicious attacks. The attacker will not get from you what (s)he can get from a large corporate network, but that does not mean you're safe. The earlier you become security-aware, the better. While the subject of network security is huge, today we chose an interesting piece of software named tripwire, a HIDS (Host-based Intrusion Detection System).

If you already have some experience as a Linux system administrator, chances are you know what cron is and what it does. If you're just starting working with Linux, it's essential knowledge that will certainly serve you later. Either way, if you already have the knowledge, this article will refresh it. If not, you will get a guide to start you up. So you're only expected to have some basic knowledge of Linux systems and, as usual, a desire to learn.

If you ask around about Gentoo, chances are you will get mixed reviews : some will say it's a waste of time, others will say it's only for ubergeeks, yet others will tell you it's the only way, but no one can deny the power that Gentoo offers in terms of choices and speed. Gentoo is a rolling release distribution, which means it has no release numbers and it's updated continuously.Gentoo is also a source-based distribution, which means that everything you install you must compile first.

Do you have a stock exchange portfolio with shares that you need to monitor on daily basis? With command line and your shell nothing can be easier. In this article we will show you how to download all NYSE stock exchange ticket symbols in matter of minutes using few lines of bash script. With some light modification this method can be applied to any stock exchange and any number of ticket symbols. This script can also be altered to behave as a monitoring tool and act upon your predefined instructions if combined with a website which displays intraday data.

Looking at the trends in the IT industry, virtualization has seen quite a boom in the last few years, because it fits the concepts of utility computing and/or software as a service. Virtualization can be useful to you if you are an enterprise architect, developer, a home user or basically everything in between. We will begin with a short introduction about virtualization in general, then we will specifically treat VirtualBox and KVM as they seem to be most popular open source full virtualization solutions.

If you are working in a heterogeneous environment, that is Windows and Linux/Unix, chances are sooner or later you will have to deal with Samba. Samba's name comes from Microsoft's SMB (Server Message Block), which is the protocol used for Microsoft's standard network file system. We will show you how to install, configure and use Samba, and what advantages it can bring to your network, be it at home or at work.

While we talked before about kernel compilation and configuration, we focused on the general idea. This time we want to dig deeper into the configuration part, giving you useful advice you will need when tailoring a kernel to perfectly match your hardware. The main idea behind this is that you will need to know your hardware extremely well in order to have a kernel built exactly for it. At the beginning we will cover what you will need in order to compile your kernel and after that we move into Linux kernel configuration, compilation and installation. Please note that this time it's not very important if you compile a vanilla kernel or a distribution kernel. We will however, recommend a "modus operandi", which of course does not mean that you have to follow. After reading this guide you will be able to decide what suits you best. We expect some moderate knowledge about Linux system internals and development tools.

Package management on Linux systems has always been the subject of endless discussions, flamefests and bickering. Nonetheless, regardless of what one prefers, there's something for everyone, if not in distro X, then maybe in distro Y. Some swear by binary package management, others say that the only true way is compilation from source. Today we will focus on two distributions that offer the best of both worlds : Arch Linux and Slackware.

Dragora GNU/Linux is Argentina-based distribution, started in 2007 by Matias A. Fonzo, a Linux enthusiast, along with just a few contributors. It is one of the few Linux distributions comprised of 100% Free/Libre Software, and endorsed by the Free Software Foundation. If you expect bells and whistles, think again, it's a distribution that focuses on simplicity, one application per task and it's aimed at people who want to learn about how a Linux system works. If this scares you, there's no need, we installed Dragora GNU/Linux 2.1 64-bit, tinkered with it, liked it, so we'll be able to get you started.

Many organizations are navel gazing and assessing ways of increasing productivity and decreasing costs in order to stay afloat in the current business climate. As a company’s IT spend is one of the larger costs of running a business, it makes sense to look closely at how you run your IT shop. Linux may just answer both prayers: offering increased productivity at decreased cost. So why is Linux such a successful solution, which companies have made the switch, and how will the Linux jobs landscape change in the future?

Don’t believe the naysayer’s hype about Python! With increasing popularity among Linux communities and used by major corporations such as Google, Python is here to stay! Some sceptics have published articles and blogs over the last few years that have doubted the future of Python. However, Python has been around since 1991 and the growth in popularity of this stable and comprehensive high level programming language, especially in the Linux user domain, would indicate that it is here to stay.

According to an article which recently appeared on LinuxInsider, “the biggest change and impact to the Linux landscape and market to date has been the advent of cloud computing”. The IT industry is headed towards a centralised data centre model once more with cloud computing gathering momentum and a swagger of big integrators and small start ups alike are offering services in this arena. Open source solutions such as Linux naturally thrive in the current environment where multiple platforms seek solace under the same apparent cloud.