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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

LibreOffice Office Suite Celebrates 6 Years of Activity with LibreOffice 5.2.2

Today, September 29, 2016, Italo Vignoli from The Document Foundation informs Softpedia via an email announcement about the general availability of the first point release of the LibreOffice 5.2 open-source and cross-platform office suite. On September 28, the LibreOffice project celebrated its 6th anniversary, and what better way to celebrate than to push a new update of the popular open source and cross-platform office suite used by millions of computer users worldwide. Therefore, we would like to inform our readers about the general availability of LibreOffice 5.2.2, which comes just three weeks after the release of LibreOffice 5.2.1. "Just one day after the project 6th anniversary, The Document Foundation (TDF) announces the availability of LibreOffice 5.2.2, the second minor release of the LibreOffice 5.2 family," says Italo Vignoli. "LibreOffice 5.2.2, targeted at technology enthusiasts, early adopters and power users, provides a number of fixes over the major release announced in August." Read more

OSS Leftovers

  • But is it safe? Uncork a bottle of vintage open-source FUD
    Most of the open source questioners come from larger organisations. Banks very rarely pop up here, and governments have long been hip to using open source. Both have ancient, proprietary systems in place here and there that are finally crumbling to dust and need replacing fast. Their concerns are more oft around risk management and picking the right projects. It’s usually organisations whose business is dealing with actual three dimensional objects that ask about open source. Manufacturing, industrials, oil and gas, mining, and others who have typically looked at IT as, at best, a helper for their business rather than a core product enabler. These industries are witnessing the lighting fast injection of software into their products - that whole “Internet of Things” jag we keep hearing about. Companies here are being forced to look at both using open source in their products and shipping open source as part of their business. The technical and pricing requirements for IoT scale software is a perfect fit for open source, especially that pricing bit. On the other end - peddling open source themselves - companies that are looking to build and sell software-driven “platforms” are finding that partners and developers are not so keen to join closed source ecosystems. These two pulls create some weird clunking in the heads of management at these companies who aren’t used to working with a sandles and rainbow frame of mind. They have a scepticism born of their inexperience with open source. Let’s address some of their trepidation.
  • Real business innovation begins with open practices
    To business leaders, "open source" often sounds too altruistic—and altruism is in short supply on the average balance sheet. But using and contributing to open source makes hard-nosed business sense, particularly as a way of increasing innovation. Today's firms all face increased competition and dynamic markets. Yesterday's big bang can easily become today's cautionary tale. Strategically, the only viable response to this disruption is constantly striving to serve customers better through sustained and continuous innovation. But delivering innovation is hard; the key is to embrace open and collaborative innovation across organizational walls—open innovation. Open source communities' values and practices generate open innovation, and working in open source is a practical, pragmatic way of delivering innovation. To avoid the all-too-real risk of buzzword bingo we can consider two definitions of "innovation": creating value (that serves customer needs) to sell for a profit; or reducing what a firm pays for services.
  • This Week In Servo 79
    In the last week, we landed 96 PRs in the Servo organization’s repositories. Promise support has arrived in Servo, thanks to hard work by jdm, dati91, and mmatyas! This does not fully implement microtasks, but unblocks the uses of Promises in many places (e.g., the WebBluetooth test suite). Emilio rewrote the bindings generation code for rust-bindgen, dramatically improving the flow of the code and output generated when producing Rust bindings for C and C++ code. The TPAC WebBluetooth standards meeting talked a bit about the great progress by the team at the University of Szeged in the context of Servo.
  • Servo Web Engine Now Supports Promises, Continues Churning Along
    It's been nearly two months since last writing about Mozilla's Servo web layout engine (in early August, back when WebRender2 landed) but development has kept up and they continue enabling more features for this next-generation alternative to Gecko. The latest is that Servo now supports JavaScript promises. If you are unfamiliar with the promise support, see this guide. The latest Servo code has improvements around its Rust binding generator for C and C++ code plus other changes.
  • Riak TS for time series analysis at scale
    Until recently, doing time series analysis at scale was expensive and almost exclusively the domain of large enterprises. What made time series a hard and expensive problem to tackle? Until the advent of the NoSQL database, scaling up to meet increasing velocity and volumes of data generally meant scaling hardware vertically by adding CPUs, memory, or additional hard drives. When combined with database licensing models that charged per processor core, the cost of scaling was simply out of reach for most. Fortunately, the open source community is democratising large scale data analysis rapidly, and I am lucky enough to work at a company making contributions in this space. In my talk at All Things Open this year, I'll introduce Riak TS, a key-value database optimized to store and retrieve time series data for massive data sets, and demonstrate how to use it in conjunction with three other open source tools—Python, Pandas, and Jupyter—to build a completely open source time series analysis platform. And it doesn't take all that long.
  • Free Software Directory meeting recap for September 23rd, 2016

Security News

  • security things in Linux v4.5
  • Time to Kill Security Questions—or Answer Them With Lies
    The notion of using robust, random passwords has become all but mainstream—by now anyone with an inkling of security sense knows that “password1” and “1234567” aren’t doing them any favors. But even as password security improves, there’s something even more problematic that underlies them: security questions. Last week Yahoo revealed that it had been massively hacked, with at least 500 million of its users’ data compromised by state sponsored intruders. And included in the company’s list of breached data weren’t just the usual hashed passwords and email addresses, but the security questions and answers that victims had chosen as a backup means of resetting their passwords—supposedly secret information like your favorite place to vacation or the street you grew up on. Yahoo’s data debacle highlights how those innocuous-seeming questions remain a weak link in our online authentication systems. Ask the security community about security questions, and they’ll tell you that they should be abolished—and that until they are, you should never answer them honestly. From their dangerous guessability to the difficulty of changing them after a major breach like Yahoo’s, security questions have proven to be deeply inadequate as contingency mechanisms for passwords. They’re meant to be a reliable last-ditch recovery feature: Even if you forget a complicated password, the thinking goes, you won’t forget your mother’s maiden name or the city you were born in. But by relying on factual data that was never meant to be kept secret in the first place—web and social media searches can often reveal where someone grew up or what the make of their first car was—the approach puts accounts at risk. And since your first pet’s name never changes, your answers to security questions can be instantly compromised across many digital services if they are revealed through digital snooping or a data breach.
  • LibreSSL and the latest OpenSSL security advisory
    Just a quick note that LibreSSL is not impacted by either of the issues mentioned in the latest OpenSSL security advisory - both of the issues exist in code that was added to OpenSSL in the last release, which is not present in LibreSSL.
  • Record-breaking DDoS reportedly delivered by >145k hacked cameras
    Last week, security news site KrebsOnSecurity went dark for more than 24 hours following what was believed to be a record 620 gigabit-per-second denial of service attack brought on by an ensemble of routers, security cameras, or other so-called Internet of Things devices. Now, there's word of a similar attack on a French Web host that peaked at a staggering 1.1 terabits per second, more than 60 percent bigger. The attacks were first reported on September 19 by Octave Klaba, the founder and CTO of OVH. The first one reached 1.1 Tbps while a follow-on was 901 Gbps. Then, last Friday, he reported more attacks that were in the same almost incomprehensible range. He said the distributed denial-of-service (DDoS) attacks were delivered through a collection of hacked Internet-connected cameras and digital video recorders. With each one having the ability to bombard targets with 1 Mbps to 30 Mbps, he estimated the botnet had a capacity of 1.5 Tbps. On Monday, Klaba reported that more than 6,800 new cameras had joined the botnet and said further that over the previous 48 hours the hosting service was subjected to dozens of attacks, some ranging from 100 Gbps to 800 Gbps. On Wednesday, he said more than 15,000 new devices had participated in attacks over the past 48 hours.

Android Leftovers