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Yesterday I’ve attended the Nagios World Conference Europe hosted in Bozen (Italy) by Wurth-Phoenix, so as first thing thanks to Wurst-Phoenix for the organization this meeting, for the free access provided to the event , and for the good meal that we have enjoyed.

These are some notes I’ve took during the meeting.

The news today is that Microsoft seem to be in the process of buying has bought Skype for something around $8.5 billion. So what will happen to Linux support for Skype ? No one knows it at the moment but I can imagine nothing too good, in the best scenario, that I can imagine at the moment, the new Skype servers are still open to Linux clients, but the support on our operating system is left back and over some time using Skype on Linux become almost impossible. But perhaps it’s better to talk to something else…what do you know about XMPP/Jingle ?

The Network Security Toolkit (NST) is a ISO live CD/DVD (NST Live) based on Fedora. The toolkit was designed to provide easy access to best-of-breed Open Source Network Security Applications and should run on most x86/x86_64 platforms.

The main intent of developing this toolkit was to provide the network security administrator with a comprehensive set of Open Source Network Security Tools. The majority of tools published in the article: Top 100 Security Tools by INSECURE.ORG are available in the toolkit.

After the social networks the new trend on the Net it’s the microblogging, choose your style: Twitter, identi.ca, Picotea or something else but at the moment this is a must for the internet addicted, or just for keeping in touch with all the news you are interested in or just with your friends. So, while it’s always possible to use your favorite browser to keep in touch with all these messages, today we’ll see some Micro-blogging clients on Linux.

Not long ago has been released Ubuntu version 11.04, someone loves it, others dislike the new graphical environment or something else that has been changed in this release, but at the moment it seem that everyone is talking about Ubuntu. So let me say clearly: Gnu/Linux is NOT only Ubuntu, there are many good distributions that can be perfect for some computers or goals, let me introduce you some uncommon distributions, for uncommon i means not in the top 15 of distrowatch.com.

After all those rich desktop Environment saw in Ubuntu, Chackra or Gnome 3 in general i needed a desktop minimalistic and comfortable, so today I’ve done some test on #! Crunchbang 10, it’s a Debian GNU/Linux based distribution with a lightweight desktop Environments: Openbox and optionally XFCE.

The Nagios World Conference™ will be held on May 12th at Bolzano/Italy and is organized by wuerth-phoenix.

The agenda seem is interesting and there is the participation of namable speakers such as Nagios founder Ethan Galstad, Nagios Plugin coordinator Ton Voon or the NS Client creator Michael Medin. Moreover, there will be presentations of the new OTRS version and the interaction of OSS monitoring solutions such us Nagios with the integrated CMDB and the Change Management workflow engine.

Finally ntop's Luca Deri will take an introduction on application latency monitoring using nProbe via NetFlow.

Or perhaps I should call this “Do you remember I was upgrading to Ubuntu 11.04 ?”. Well something has gone bad and when I rebooted to start my new Xubuntu 11.04 I got:

error: cannot read the Linux header. error: you need to load the kernel first.

Today it’s the day, Ubuntu 11.04 has been officially released and they server are now under “attack” by all the Ubuntu users that are trying to download the new release or update a former version, for me it took around 3 hours to finish the download of the 1400 packages needed to upgrade from Xubuntu 10.10 to 11.04 with 2 disconnection. But Ubuntu is not the only thing released in these days; yesterday, has been released Slackware 13.37 ( codenamed leet ) and today it was also released version 2011.04 of Chakra Linux. Really a lot of news.

I draw inspiration from the request of a dear member of this little web space, which has given to me the input for this article, to make a bit of clarity about a subject that,for what I’ve saw around during my research on the Internet, seems to have created some difficulties for many people.

The argument i’m talking about is the OCR technology (Optical Character Recognition), that is a “technology ” that can recognize text characters from an image of paper documents previously digitized through the scanner and then transform this into an editable text.

Happy easter to all, what’s better than celebrate this holiday taking a look at what have hidden the programmers in our software ? A virtual Easter egg is an intentional hidden message, in-joke or feature in a work such as a computer program, web page, video game, movie, book or crossword. The term was coined—according to Warren Robinett—by Atari after they were pointed to the secret message left by Robinett in the game Adventure.

I wanted to experience the thrill of browsing anonymously, or to a navigation system that does not easily reveal the information on the connection you use. The choice of which software to use is gone on Tor, but only because it is the most famous. Personally, I proceeded to download the latest version of TOR available for my GNU/Linux directly from its site.

In my previous article i've show you Knockd, i've received soem comments regarding the fact that this is NOT at all a good way to secure your server. Well, in my opinion knockd it’s a layer of security, perhaps thin but still can save you from some brute force script and so it adds a bit of security to your solution, in this article i’ll show you fail2ban that add another layer of security to our network services.

Today, i’ll show you how to use knockd to improve the security of your linux server, the more common use that i’ve saw so far is: “i’d like to connect on port 22 (ssh) but i don’t want to leave to port open for everyone..and i’ve a dynamic IP”. In these cases you can close the ports and use knockd to knock on the ports of your Linux box and let you in.

NagiosQL is a web based administration tool for Nagios 2.x, 3.x and Icinga 1.x. It helps you to easily build a complex configuration with all options, manage and use them. NagiosQL is based on a webserver with PHP, MySQL and local file or remote access to the Nagios configuration files via ssh or ftp .

The product relies on a Mysql DB which keep all the configurations for Nagios, there is also the option “dump to disk” which writes all configuration files of Nagios, you can also import from Nagios configuration text files to the database.

Everyone loves the invasion of zombies, and everyone loves linux, and so what can be born from the union of these two elements? 5 great games of course! The games that i’ll show to you in this article are: Atom zombie smasher, violetland, Ultimate Zombie Fighters, project zomboid and Zombpocalypse, have a good day with them!

This is the last part of the guide on how to produce professional music with Linux. We'll see how to sue Ardour and Rosegarden to record our MIDI base and our final track.

Probably you have already saw these small black and white image in some sites or while walking around your city, or if you have a smartphone probably you have already used them; they are QR Code. In this article we’ll see how to create these image in Linux and some uses of these images.

I came across by chance in what I consider one of the more comprehensive guide to creating audio in Linux, and Stefano gave me the permission to republish his material that I consider really good and that he uses as musician. Stefano it’s an Ubuntu user and his guide it’s based on this distribution

I came across by chance in what I consider one of the more comprehensive guide to creating audio in Linux, and Stefano gave me the permission to republish his material that I consider really good and that he uses as musician. So if you are interested in how to record professional audio track with Linux check this guide.