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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.


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.


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 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

TheSSS 20.0 Server-Oriented Linux Distro Ships with Linux Kernel 4.4.17, PHP 5.6

4MLinux developer Zbigniew Konojacki informs Softpedia today, October 26, 2016, about the release and immediate availability of version 20.0 of his server-oriented TheSSS (The Smallest Server Suite) GNU/Linux distribution. Read more

Ubuntu 17.04 (Zesty Zapus) Daily Build ISO Images Are Now Available for Download

Now that the upcoming Ubuntu 17.04 (Zesty Zapus) operating system is officially open for development, the first daily build ISO images have published in the usual places for early adopters and public testers. Read more

Today in Techrights

OSS Leftovers

  • Chain Releases Open Source Blockchain Solution for Banks
    Chain, a San Francisco-based Blockchain startup, launched the Chain Core Developer Edition, which is a distributed ledger infrastructure built for banks and financial institutions to utilize the Blockchain technology in mainstream finance. Similar to most cryptocurrency networks like Bitcoin, developers and users are allowed to run their applications and platforms on the Chain Core testnet, a test network sustained and supported by leading institutions including Microsoft and the Initiative for Cryptocurrency and Contracts (IC3), which is operated by Cornell University, UC Berkeley and University of Illinois.
  • Netflix Upgrades its Powerful "Chaos Monkey" Open Cloud Utility
    Few organizations have the cloud expertise that Netflix has, and it may come as a surprise to some people to learn that Netflix regularly open sources key, tested and hardened cloud tools that it has used for years. We've reported on Netflix open sourcing a series of interesting "Monkey" cloud tools as part of its "simian army," which it has deployed as a series satellite utilities orbiting its central cloud platform. Netflix previously released Chaos Monkey, a utility that improves the resiliency of Software as a Service by randomly choosing to turn off servers and containers at optimized tims. Now, Netflix has announced the upgrade of Chaos Monkey, and it's worth checking in on this tool.
  • Coreboot Lands More RISC-V / lowRISC Code
    As some early post-Coreboot 4.5 changes are some work to benefit fans of the RISC-V ISA.
  • Nextcloud Advances with Mobile Moves
    The extremely popular ownCloud open source file-sharing and storage platform for building private clouds has been much in the news lately. CTO and founder of ownCloud Frank Karlitschek resigned from the company a few months ago. His open letter announcing the move pointed to possible friction created as ownCloud moved forward as a commercial entity as opposed to a solely community focused, open source project. Karlitschek had a plan, though. He is now out with a fork of ownCloud called Nextcloud, and we've reported on strong signs that this cloud platform has a bright future. In recent months, the company has continued to advance Nextcloud. Along with Canonical and Western Digital, the partners have launched an Ubuntu Core Linux-based cloud storage and Internet of Things device called Nextcloud Box, which we covered here. Now, Nextcloud has moved forward with some updates to its mobile strategy. Here are details.
  • Using Open Source for Data
    Bryan Liles, from DigitalOcean, explains about many useful open source big data tools in this eight minute video. I learned about Apache Mesos, Apache Presto, Google Kubernetes and more.