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Network security is an ever growing need these days. You never know what you’re going to find when you step out into the wild world of the internet. Luckily we’re all using Ubuntu so we’re much more protected than most of the world, but there still is reason to protect our computers and networks.

For those of you that are not behind a hardware router (if you don’t know this might be you) you definitely want to install a firewall for your system.

Setup a Desktop Firewall with Firestarter : Ubuntu (5.10 / 6.06.1 / 6.10)

And: Using Firestarter


Skype is a little piece of software that lets you make free calls to anyone else on Skype, anywhere in the world. And even though the calls are free, they are really excellent quality. If you and your friends, family or business contacts are using webcams, you can also make free video calls. You can even call landlines and mobile phones at really cheap per minute rates (and there’s no setup or subscription fee).

Install skype in ubuntu

First you need to download the latest .deb package from here using the following command:

Install Skype Instant messenger


As part of my work on Xen I've been playing with Xephyr (a replacement for Xnest). My plan is to use Xen instances for running different versions of desktop environments. You can't just ssh -X to a Xen image and run things. One problem is that some programs such as Firefox do strange things to try and ensure that you only have one instance running. Another problem is with security, the X11 security extensions don't seem to do much good. A quick test indicates that a ssh -X session can't copy the window contents of a ssh -Y session, but can copy the contents of all windows run in the KDE environment. So this extension to X (and the matching ssh support) seem to do little good.

One thing I want to do is to have a Xen image for running Firefox with risky extenstions such as Flash and keep it separate from my main desktop for security and managability.

Xephyr


This article is to guide you thru the installation and system preparation for FreeBSD 6.1. This article is not intended to produce a working system, but is the foundation for the progression to either a desktop system or a server. Once this document has been followed to completion, you may either choose to follow the Server or Workstation documents for your system deployment.

installing_freebsd_6_1


When you install a dual-boot of Ubuntu, one of the frustrating things that you’ll immediately notice is that Ubuntu is now set as the default operating system in the Grub loader. There’s an easy way to switch back to using Windows as the default.

To make this change, you’ll first have to boot into Ubuntu, and then run the following command:


Set Windows as Default OS when Dual Booting Ubuntu


This article is about resizing ext3 partitions without losing data. It shows how to shrink and enlarge existing ext3 partitions and how to merge two ext3 partitions. This can be quite useful if you do not use LVM and you realize that your existing partitioning does not meet your actual needs anymore.

How To Resize ext3 Partitions Without Losing Data


I have mp3 music file all over my file system. I’d like to move them onto specific directory called /mnt/mp3. So how do you find and move all mp3 files to /mnt/mp3 directory?

Simply use find command. It locates all files and then executes a command to move them to /mnt/mp3 (any other directory).

Finding all .mp3 files and move to new directory from shell prompt


A quick note for anyone wondering how to enable core dumps from within most Linux distributions.

1. First, make sure debug symbol are enabled in your project’s configuration (in configure.ac if you’re using autoconf).

HOWTO enable coredumps


Staying in front of your computer for hours and hours with the default fonts can be a challenge on Linux/Unix. I, for one, can't work properly without the Windows fonts comfort Smile

Having the windows fonts working on Unix systems is fairly easy, but on Red Hat-based operating systems such as CentOS or Fedora, can be a real nightmare. The most critical aspect of having the Microsoft fonts to display properly on CentOS in compiling freetype with bytecode interpreter enabled. Let's go through this procedure.

How to display Microsoft fonts like in Windows in CentOS?


More in Tux Machines

Desktop GNU/Linux/Chromebook

  • A Minimal Chrome OS Theme for Tint2
    I used to (and sort-of-still-do, I guess) run a sister site focused on Google Chrome, Chromecast and Chromebooks, i.e. the Chrome ecosystem. As such I am a fan of Chromebooks and Chrome OS, a Linux-based distribution based on Gentoo. The appearance of Chrome OS has waxed and waned in sync with Google’s ambitions and positioning for the OS, going form hyper-minimal to a full desktop clone (with the desktop-y Chrome Apps platform) through to a Material Design inspired Android + Chrome hybrid today.
  • Off-The-Shelf Hacker: Linux for Cheap Hardware, Then and Now
    Most people, don’t realize how prolific Linux has become. With the Embedded Linux Conference just a week away, I’ve been reflecting on how Linux has provided a sort of computing “circle of life” experience for me. It’s powered my computational hardware 20 years ago and continues to do so today.
  • [Video] XPS 13 Review | Linux Action Show 457
  • GParted 0.28.1
    This release of GParted restores the ability to move/resize primary partitions when an extended partition exists. The move/resize regression was introduced in version 0.28.0. This release also includes some minor bug fixes.
  • Antergos Linux : The beauty built on Arch
    Hi guys, welcome to the 16th segment of "Introduction with Linux Distro". Most of us know or heard about Arch Linux, which is one of the most widely used Linux distribution. For some reason, few users find it hard to install and use Arch. But in Linux world, there is almost always some alternative to your desired distribution. In today's segment, we will be introducing an Arch-based distribution which turned it completely on user-friendly side. So, let's get to know about Antergos Linux.

Kernel Space/Linux

Leftovers: Software

  • Picard 1.4 released
    The last time we put out a stable release was more than 2 years ago, so a lot of changes have made it into this new release. If you’re in a hurry and just want to try it out, the downloads are available from the Picard website.
  • Linux Digital Audio Workstations: Open Source Music Production
    Linux Digital Audio Workstations When most people think of music programs, they’ll usually think Mac OS or Windows. However, there are also a few Linux digital audio workstations. The support and features of these programs can vary, but they’re a good choice to setup a cheap recording studio. Some of them are even good competitors for paid programs, offering features such as multitrack recording, MIDI, and virtual instruments. Keep in mind that many audio editing programs for Linux rely on the Jack backend. You’ll need a dedicated system to install these programs on, since it doesn’t work properly in a virtual machine. In the following article, we’ll cover audio editing programs that are available for Linux. We’ll talk about the available features, as well as help you decide which program to use for your needs.
  • i2pd 2.12 released
    i2pd (I2P Daemon) is a full-featured C++ implementation of I2P client. I2P (Invisible Internet Protocol) is a universal anonymous network layer. All communications over I2P are anonymous and end-to-end encrypted, participants don't reveal their real IP addresses.
  • 4 Command-Line Graphics Tools for Linux
    For the most part, they’re wrong. Command-line image tools do much of what their GUI counterparts can, and they can do it just as well. Sometimes, especially when dealing with multiple image files or working on an older computer, command-line tools can do a better job. Let’s take a look at four command-line tools that can ably handle many of your basic (and not-so-basic) image manipulation tasks.
  • CloudStats - Best Server Monitoring Tool for Linux Servers
    CloudStats is an effective tool for Linux server monitoring and network monitoring. With CloudStats you get whole visibility into key performance criteria of your Linux Server. You can proactively track different server metrics like CPU, disk and memory usage, services, apps, processes and more. The best thing is that you don’t need to have any special technical skills – this tool for server monitoring is very easy to install and run from any device.
  • New Inkscape 0.92.1 fixes your previous works done with Inkscape
    This blog-post is about a happy-end after a previously published blog-post named New Inkscape 0.92 breaks your previous works done with Inkscape published on 20 January. A lot of reactions did happen about this previous blog-post and the news get quickly viral. That's why I thought it was nice to make another blog post to "close this case".
  • Qt 5.10 To Have Built-In Vulkan Support
    With Qt 5.8 there was experimental Direct3D 12 support that left some disappointed the toolkit didn't opt for supporting Vulkan first as a cross-platform, high-performance graphics API. Fortunately, with Qt 5.10, there will be built-in Vulkan support. Going back nearly one year there has been Vulkan work around Qt while with Qt 5.10 it's becoming a reality. However, with Qt 5.9 not even being released until the end of May, Qt 5.10 isn't going to officially debut until either the very end of 2017 or early 2018.
  • Rusty Builder
    Thanks to Georg Vienna, Builder can now manage your Rust installations using RustUp!
  • GNOME MPlayer knows how to grow your playlist size

today's howtos