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The hostname defaults to localhost. If you are logged in, you can verify that by typing hostname at a shell terminal, or clicking the Details module in System Settings, where the hostname should be listed in the Device name field.

This document describes how to install a Postfix mail server that is based on virtual users and domains, i.e. users and domains that are in a MySQL database. I'll also demonstrate the installation and configuration of Courier, so that Courier can authenticate against the same MySQL database Postfix uses. The resulting Postfix server is capable of SMTP-AUTH and TLS and quota. Passwords are stored in encrypted form in the database. In addition to that, this tutorial covers the installation of Amavisd, SpamAssassin, ClamAV, and SquirrelMail.

For every business organization on Internet, viruses, worms, and crackers are but a few security threats. Above all we cannot tell as to when, where and how our data or any other valuable information will be compromised. The only thing we can do to ensure the safety of our data is to take preventive measures. Honeypots are one such preventive software that are employed in a network to study the trail of unauthorized access and at the same time alert the network administrator of a possible intrusion. Actually, it is a trap set to detect attempts at unauthorized use of information system. The attacker always thinks that he is extracting some useful information but in turn a honeypot installed system attracts him away from the critical resources and traps him by following his trail. The value of a Honeypot lies in unauthorized and illicit use of that resource.

There are any number of such repos that you can enable. The recommended ones to install are RPM Fusion and rpm.livna.org. The latter is complementary to the former, shipping only those applications that, for one reason or another, are not available in RPM Fusion.

Deep underground lies a reminder of Boarkind’s darkest hours. All it takes is one little boar to dig it back up. A block puzzler with an exploratory twist, Full Bore throws the player into an open world of crumbling mines, arcane ruins, and technological wonders with only curiosity to lead the way. Full Bore is coming to Windows and Linux PCs this Summer!

The latest chapter to our lengthy Intel Haswell on Linux saga is virtualization benchmarks. From Fedora 19 with the very latest software components for Linux virtualization, the performance of KVM, Xen, and VirtualBox were benchmarked from the Intel Core i7 4770K "Haswell" CPU.

David Herrmann has a GSoC project for working on DRM render and mode-set nodes and so far he has been making great progress. On Sunday he posted his second revision of his unified VMA offset manager patch-set and DRM render node work.

The second beta release of gNewSense 3.0 (code name 'Parkes') is available for download. The following issues have been fixed: the live installer (which can be started with the icon on the live desktop) works now, you also still have the text and GUI install boot menu options; the graphical installer now looks like gNewSense instead of Debian; OpenOffice.org is included in the default install; the boot menu is shorter so that items at the bottom are more easily readable. There's only a live CD for i386 so far. Netboot images will follow shortly. I will provide a live CD for amd64 too, but that needs a bit more work.

The precise amount of time the vulnerability was active is in dispute, with Cryptocat developers putting it at seven months and a security researcher saying it was closer to 19 months. Both sides agree that the effect of the bug was that the keys used to encrypt and decrypt conversations among groups of users were easy for outsiders to calculate. As a result, activists, journalists, or others who relied on Cryptocat to protect their group chats from government or industry snoops got little more protection than is typically available in standard chat programs. Critics said it was hard to excuse such a rudimentary error in an open-source piece of software held out as a way to protect sensitive communications.

A new update to the Source Development Kit has been released which supports Linux now.

Desktop files are text files, with .desktop extension, that launches applications. In this tutorial, I wish to explore different ways you can use desktop files to run range of applications.

This article offers a survey of Linux podcasts, and podcasts that have close links to Linux. Whilst the survey does not offer exhaustive treatment, it gives an opinion on 20 different podcasts.

I once read that a network firewall was as much a central point for getting visibility into your network as it was a point for restricting and securing your network. It is my personal belief that these things go hand in hand. How can you secure your network if you don't understand what is actually going on inside it? how can you differentiate between what is good and bad traffic, if you can't actually see the traffic? A few years ago, I invested a serious amount of time searching for an open-source firewall that I could insert into a network on some standard hardware and see what was happening, then respond to this. I was disappointed to say the least.

In this article, we will see different methods to change the delimiter in file content, for example: from a comma to a colon.

We interviewed the founder of PCBSD at Texas Linux Fest. He also works for iX Systems.

As the title suggests, Linux and performance in the same sentence makes for an interesting topic of discussion. Everyone knows there is a multitude of options available to us. In this article, I’m going to attempt to cover a few of them.

At the upcoming Hot Chips Conference in late August, Oracle, IBM and Fujitsu are all set to announce the release of new high-performance Unix chips.

Along with benchmarking the AMD A10-6800K "Richland" APU on Linux and its Radeon HD 8670D graphics, I provided some GCC compiler tuning benchmarks for this AMD APU with Piledriver cores. The latest Linux testing from the A10-6800K is a comparison of GCC 4.8.1 to LLVM/Clang 3.3 on this latest-generation AMD low-power system.

For those looking to test out the long-awaited Radeon dynamic power management support within the Linux 3.11 kernel, here's some information on the new debugfs and sysfs interfaces for dealing with this "DPM" feature. The Radeon updates for the Linux 3.11 kernel are very exciting as the GPU clock speeds and voltages can dynamically adjust based upon load. This leads to power-savings when idling, especially for battery-backed systems, and also to greater performance on newer hardware by being able to up-clock the GPU from its boot speeds.

Limit Theory is a crowdfunded Space Sim whose universe is based around the concept of procedural content generation: nearly everything in LT, according to the developer words, will be computer generated (quests, solar systems, enemies, nebulas, etc.).