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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

Leftovers: Gaming

Leftovers: GNOME Software

  • GNOME Photos 3.18 App Gets Its First Hotfix Release Ahead of GNOME 3.18.1
    Earlier today, October 12, Debarshi Ray was happy to inform us all about the immediate availability of the first point release of his GNOME Photos 3.18 image viewer application for the soon-to-be-released GNOME 3.18.1 desktop environment.
  • View your GTK3 app or VM on the Web
    Ever wondered how to view gedit in a browser? It’s not a secret anymore, broadway is there for some time.
  • The new search for GNOME Files (aka Nautilus)
    As some (most? none? who knows =P) of you already know, last cycle I worked as a Google Summer of Code intern with Gtk+ and Nautilus. We saw the very positive results of it. And the picky eyes out there noticed that I wrote with these exact words: “While the project is over, I won’t stop contributing to Nautilus. Even with the interesting code, even with all the strange things surrounding it. Nautilus is like an ugly puppy: it may hurt your eyes, yet you still warmly love it.”

Linux Devices

  • Linksys WRT1900ACS Router is Ready for Open Source Tinkering
    We still regard the Linksys WRT1900AC as one of the best and fastest routers available, though if you're eyeing that model, there's a new version available with more memory and a faster processor. It's the WRT1900ACS, which is essentially an improved version of the WRT1900AC. The new model boasts a 1.6GHz dual-core processor, an upgrade over its predecessor's 1.2GHz chip; 128MB of flash memory (same as before); 512MB of DDR3 RAM, which is two times as much as the WRT1900AC; and eSATA and USB ports.
  • Linux Foundation Takes on Real-Time Computing for Embedded Apps
    What's the next step for open source in the embedded computing market? Google (GOOG), the Linux Foundation and other inaugural supporters of the Real-Time Linux Collaborative Project, which launched this month with a focus on the robotics, telecom, manufacturing, aviation, medical and similar industries, think kernel-level real-time support is the answer.
  • Your Last Chance To Crowdfund InvizBox Go, A Portable Open Source VPN Router
    A small Irish tech startup is in the last few days of crowdfunding for a small Linux-based router it’s hoping to ship out to supporters in February 2016. If its Kickstarter campaign is successful, InvizBox Go will offer users some protection when connecting to WiFi networks. Whether you’re at home, at a hotel, or working out of a coffee shop, the InvizBox Go will be able to connect your devices and route all of your traffic over Tor or a VPN connection (or even both). And since it can connect all devices simultaneously, it’s a great solution for keeping your housemates secure without requiring them to plug into anything or even download any software. Or, let’s face it, it’s also good for watching blocked content from around the world. Users will also be able to block a known list of ad providers. An optional feature will block Windows 10’s tracking domain. Additionally, the device can acts as a WiFi extender or even be used to charge a mobile phone or tablet if users plug into its USB port.
  • Irish firm’s product to mask online activity

Leftovers: OSS

  • Industry Veterans Partner to Create a School for Software Engineers
    Another interesting angle is that during their first year at school all projects except their own, if they decide otherwise, must be open sourced online on the repository of their choice (such as GitHub). "Open source is a great option for teaching students because it not only helps you in building new skills as as software engineers, but also you know how to communicate with your peers. You have to understand how the team is working among many things. So I think open source is a great way to learn software engineering," added Barbier. Because the Linux Foundation also runs many specialized courses, I asked whether the school had any plans to collaborate with the Foundation. I was told that, although they are in touch with the Linux Foundation, it's too early to comment on it.
  • Eximbank opts for Allevo’s open source application FinTP
    It originates from Allevo’s older offering, qPayintegrator. The open source project has been in the making for a few years.
  • Volkswagen’s Diesel Fraud Makes Critic of Secret Code a Prophet
    A Columbia University law professor stood in a hotel lobby one morning and noticed a sign apologizing for an elevator that was out of order. It had dropped unexpectedly three stories a few days earlier. The professor, Eben Moglen, tried to imagine what the world would be like if elevators were not built so that people could inspect them.
  • Mozilla to Bar Many Legacy Plug-ins in Firefox By End of 2016
    As we've reported several times, Google has been introducing big changes in its Chrome browser, especially when it comes to how the browser handles extensions. If you've regularly used either or both of the most popular open source Internet browsers--Google Chrome and Mozilla Firefox--then you're probably familiar with the performance and security problems that some extensions for them have caused. Mozilla, like the Chrome team, is also focused on the effect that extensions have on performance and reliability. Now, Benjamin Smedberg, a Mozilla senior engineering manager, in a post to a blog, has confirmed that Mozilla will bar almost all plug-ins built using decades-old NPAPI technology by the end of 2016.
  • What you need to know about Astara
    Astara provides OpenStack operators with a vendor-agnostic network orchestration platform that addresses the complex nature and scale of Neutron implementations. Astara features a driver-based orchestrator to manage network functions from different providers on bare metal, in virtual machines (VMs) and containers.
  • Mirantis, NetApp announce joint partnership
    Mirantis, the pure-play OpenStack company, has joined hands with NetApp and announced a joint partnership that combines the Mirantis OpenStack with mission-critical NetApp storage infrastructures.
  • Mirantis and NetApp Partner for Joint Testing, Cloud Reference Architectures
  • Introducing the Astara project, a preview of Liberty and Mitaka, and more OpenStack news
  • Taunton and Somerset trust explores wider open source adoption
    Taunton and Somerset NHS Foundation Trust has commenced "exploratory work" around expanding its use of open source technology to include an e-prescribing solution after going live with a non-proprietary electronic patient record (EPR) system earlier this month. Trust IT director Malcolm Senior said that although work around potentially adopting a new e-prescribing system was at an early stage, Taunton and Somerset was now considering dates for possible implementation. Senior said he was confident the trust would be able to meet a timeline for completing development of an e-prescribing service in line with aims for a 'paperless NHS' by 2018.
  • Nexenta Brings Open Source-driven Software-Defined Storage Solutions to the Dell Solutions Roadshow 2015 in Japan
  • Update Python GNUPG library for GNU Health crypto plugin
    Issues digitally signing and/or verifying GNUHealth documents, using GNUPG version 2.x should be solved by upgrading to the latest python-gnupg library[1], version 0.3.8 . You can check the changelog[2] for the details.
  • Another city swaps in LibreOffice to replace Microsoft Office
    Another city has decided to swap out Microsoft Office for the open source LibreOffice productivity suite. As ZDNet reported, the municipality of Bari in Italy is currently installing the open-source office software on its 1,700 PCs after a successful trial involving 100 PCs.
  • ODS Onsite Training - Onsite Training to the European Commission
    The course aims at enhancing the understanding of linked open data principles and technologies. By the end of the course, participants should have a clear understanding of what linked open data is and how linked data technologies can be applied to improve the availability, understandability and usability of EU data.