CentOS 5.9 is out!

CentOS logo

CentOS 5.9, the open source version operating system based on Red Hat Enterprise Linux, is the successor to CentOS 5.8.

New features include:

  • The UOP added native MySQL support to postfix. More information can be found here. You might consider moving from the postfix-mysql package from the centosplus repo to this package if you are using the centosplus package only for mysql support. The centosplus package also has postgresql support, so if you need that you will still need to use the centosplus package.
  • java-1.7.0-openjdk (Java 7) support has been added in CentOS-5.9. java-1.6.0-openjdk (Java 6) is also still available and most things java in the distribution still use Java 6.
  • ant17 (Ant 1.7.0) has been added to CentOS-5.9. The older ant (Ant 1.6.5) is also still available.
  • Microsoft Hyper-V drivers have been added to allow CentOS to be more efficient as a Virtual Machine when installed on Microsoft Hyper-V server.
  • A newer version of rsyslog (name rsyslog5) is included. The original rsyslog (rsyslog version 3.22) is still available and the version installed by default.
  • The samba3x packages have been rebased on samba-3.6.x. This provides the smb2 protocol and a newer network print server.

Upgrading from CentOS 5.8 (and older releases)

If you are already running CentOS-5.8 or an older CentOS-5 distro, all you need to do is update your machine via yum by running :

‘yum update’

Mirror list (European mirrors)





Backup anything from any iOS device with i-FunBox [iOS 6 compatible]


Backup anything from any iOS device to your PC with I-Funbox. This video will show you how to backup your entire music library in just a few steps.

i-Funbox is a FREE file transfer utility for the iPad, iPhone and iPod Touch. It is feature packed with the power of many different programs combined- iTunes, installous and even more. i-Funbox is like Windows Explorer for your iPhone.


Total Control of iPhone/iPad File System

Manage files on your iPhone or iPad in a way just like Windows File Explorer but more robust and friendly. Easily transmit files and folders to your computer with the optimized file transfer and browsing. iOS 6.0 is now fully supported.

One-stop App Install and Backup 

Safe App Install on iPhone/iPad with .ipa packages. No Jailbreak required for installing purchased apps. Support install unofficial/unsigned .ipa based on AppSync without installous. Backup install apps back to .ipa packages for sharing and reinstallation. Uninstall install apps in batch easily.

Hi-Speed General Purpose Storage

Use your iPhone as an USB Portable Disk for general files. Exploit the large flash memory on iPhone or iPad with transmission speed beyond 5MB/s on iPhone and 15MB/s on iPad.

Export Music and Movie on iPhone/iPod 

Export Apple iTunes© managed audio and video in iPhone, iPad or iPods to PC as a backup copy or burn to CD. Scan and populate music and movie files in iPhone and iPod even when iTunes is refused to connect.

Encrypt your Ubuntu installation with Ubuntu 12.10

In this video tutorial I will show you how to you encrypt your Ubuntu 12.10 installation from the installation GUI.


Games: The War Z


The WarZ map - Colorado LatestThe WarZ by day







What is The WarZ?

The WarZ is a huge open world zombie survival horror MMO developed by Hammerpoint Interactive. It is not either a first person shooter or a third person shooter, as the player has the ability to switch between the two. It will feature both player versus environment (PvE) and player versus player (PvP) elements


The WarZ will feature many mechanics beyond point and shoot zombie killing action. Players will need to explore the area of Colorado in order to attain food and water in order to keep their characters alive, protect themselves from other players who might be out to kill them and loot their bodies, and to create clans and groups of players to make their efforts more effective.

Video footage:

The War Z Gameplay #1: 3 versus 4 gunfight Norad military base

More info: thewarz.com

The War Z partner news website: TheWarZnews.com

Subscribe to my YouTube channel for WarZ videos: RosendaalNET


How to install VMware Zimbra 8 on Ubuntu 12.04 (LTS)

Zimbra Logo

In this video tutorial I will show you how to install VMware Zimbra 8 on the latest Ubuntu LTS: Ubuntu 12.04. This is OS is fully supported by Zimbra and therefore highly recommended.




Before starting you’ll need a fresh and fully updated version of Ubuntu 12.04 server (x64), and root access.  You can gain root access by typing ‘sudo su’. After this you can update your machine by typing ‘apt-get update; apt-get upgrade -y; apt-get dist-upgrade -y; reboot’.


Installation process:

Install some necessary packages

# apt-get install libgmp3c2 libperl5.14 sqlite3 sysstat -y


Extract the files and start the installation process, follow the instructions

# tar xvf zcs….etc
# cd zcs…..etc
# ./install.sh


Windows Server 2012: Installation of Active Directory

In the second video tutorial of Windows Server 2012 I will show you how to install the Active Directory Domain Services. Unlike in previous versions of Windows Server, this no longer works via ‘dcpromo’, but via the Server Manager. This video shows you how to achieve this.


Windows Server 2012: Installation process and basic configuration

In this first video tutorial of Windows Server 2012 I’ll cover the installation process and I will show you how to configure some of the basic settings such as remote management, static IP, changing the server name and disabling IE Enhanced Security.


How to upgrade Zimbra 7 to Zimbra 8

In this video tutorial I will show you how to upgrade your current VMware Zimbra 7 environment to Zimbra 8. This works pretty good. However, I cannot guarantee this will work for your setup as well. Make sure to create back-ups starting the upgrade process.


Upgrade from Windows 7 to Windows 8

Windows 8 logoWindows 8 is out! In this tutorial we will upgrade our Windows 7 machine to Windows 8 in just a few simple steps!




In order to proceed you’ll need a copy of Windows 8 and an existing installation of Windows 7.

Step 1. Insert the Windows 8 dvd and run it, a windows 8 window will appear.

Step 2. Check “Go online to instal updates now (recommended)” and hit “Next”. The installer will now get the latest updates.

Step 3. Enter your product key and hit “Next”, read the license terms, check “I accept the license terms” and hit “Accept”. Choose which files you want to keep and hit “Next”. After a few minutes the “Install” button appears, click “Install”.

Step 4. Wait, a while. The installer will now upgrade your Windows 7 machine to Windows 8. This can take a very long time depending on your hardware.

Step 5. Enjoy! Your machine is now upgraded to Windows 8.


[Part 2] Configuring a Exchange 2010 to send and receive mail from the internet (video)

In part 2 of our Exchange 2010 tour I will show you how to configure Exchange 2010 to send and receive mail from the internet. In this tutorial I will use a trashdomain called “worldrallyforum.com”. The server is running Active Directory and Exchange 2010 as setup in my previous tutorial (part 1). The server is in DMZ and has the internal IP address

System requirements

In order to proceed you need a Microsoft Windows 2008 R2 server with Active Directory and Exchange 2010 installed (link).

Step 1. Open the Exchange Management Console. You can find it under Start > All Programs > Microsoft Exchange Server 2010 > Exchange Management Console.

Step 2. Expand Microsoft Exchange On-Premises. You will now be able to see a lot of categories to configure.

Step 3. Underneath Organization Configuration you will be able to find Hub Transport. A new window will appear with a few tabs. Hit “Accepted Domains”. Right-click inside this window and hit “New accepted domain”. A new wizard will appear. Enter a name, f.e. “wrf” and the Accepted Domain, “worldrallyforum.com” in my case. Hit new and finish.

Step 4. Underneath Organization Configuration, Hub Transport you will also be able to find a tab called “Send Connectors”. Right-click inside this window and hit “New send connector”. A new wizard will appear. Enter a name, f.e. “First send connector”, change the drop-down menu to “Internet”, hit next, hit Add.., in the Address field enter “*” and check “include all subdomains”, hit OK, hit next, if you want to use the MX record to route mail leave it like this, otherwise hit “Route mail through the following smart hosts”, Add.., check FQDN, enter the domain name (smtp.upcmail.nl in my example), hit OK, hit next,  next, new, finish.

Step 5. The last step is to actually allow remote traffic inside the Exchange server by changing a policy. Underneath Server Configuration, Hub Transport, right-click “Default [hostname]”, properties, hit the “permissions groups” tab, check “Anonymous users” and hit OK.

Thats it! All you have to do now is adding new mailboxes underneath Recipient Configuration, Mailbox.

Changing the default domain name for e-mail addresses.

Imagine you have a lot of mailboxes and you want to change the e-mail addresses of them all at once. You can do this via the e-mail address policy int he Exchange Management Console.

Go to Organization Configuration, Hub Transport, E-mail Address Policies. Right-click into this field and hit “New E-mail Address Policy”. A new wizard appears. Enter a name, hit browse, select the OU that you want to change, hit OK, hit next, hit next, hit add, select “Select the accepted domain for the e-mail address”, hit browse, select the domain you want to add, hit OK, hit OK, hit next, hit next, hit new, hit finish.



[Part 1] Installing Microsoft Exchange 2010 on Windows Server 2008 R2 (video)

Setting up your own Microsoft Exchange 2010 server is quite simple. You just need to download a few prerequisites that you can get from the PowerShell. In this tutorial I will show you how to install your own Microsoft Exchange 2010 server on Windows Server 2008 R2! :)


System requirements

Before we can start, you’ll need to make sure that your new Exchange server is running in an Active Directory environment and that it’s part of the domain. It’s also advised to completely update your server to the latest software before starting the installation process.


In order to successfully complete the Exchange 2010 installation we need a few prerequisites.

First, install the 2007 Office System Converter: Microsoft Filter Pack. You can download it here.

Second, add a few Windows features that you can get from the PowerShell command. Start PowerShell via Start > All Programs > Accessories > Windows PowerShell. Run this program as system administrator.

A new window will open, enter the following command:

Import-Module ServerManager

In case you wish to install a typical server including Client Access, Hub Transport and Mailbox roles, run the following command:

Add-WindowsFeature NET-Framework,RSAT-ADDS,Web-Server,Web-Basic-Auth,Web-Windows-Auth,Web-Metabase,Web-Net-Ext,Web-Lgcy-Mgmt-Console,WAS-Process-Model,RSAT-Web-Server,Web-ISAPI-Ext,Web-Digest-Auth,Web-Dyn-Compression,NET-HTTP-Activation,Web-Asp-Net,Web-Client-Auth,Web-Dir-Browsing,Web-Http-Errors,Web-Http-Logging,Web-Http-Redirect,Web-Http-Tracing,Web-ISAPI-Filter,Web-Request-Monitor,Web-Static-Content,Web-WMI,RPC-Over-HTTP-Proxy -Restart

You can find more examples and server roles here.

In case your new server is running the Client Access Server role, it requires Net.Tcp Port Sharing to be automatically started at start up. To achieve this, open the PowerShell again and run:

Set-Service NetTcpPortSharing -StartupType Automatic

Next, run the installer and have fun with your new Exchange 2010 server!

The video bellow also covers the installation.


Excuse me for the annoying music, it’s one of my first screencasts. :)

How to get the Start menu back in Windows 8

Windows 8 LogoGentlemen, in this video tutorial I will show you how to get the Start menu back in Windows 8. You can do this in just a few steps.


First, open your browser and head over to http://lee-soft.com/vistart/. Now hit “Download Start Menu” and download the executable.

Once that is done, hit run to start the installation process. In the first window, uncheck all boxes and hit Agree. In the second window, hit Decline. The Orb installation will now start. Hit Next to get the Start menu button back and you are done!


5 gratis antiviruspakketten

VirusEr zijn veel verschillende gratis antivirusprogramma’s. Heel veel zelfs. Maar wat is nu precies een antivirusprogramma en waarom gebruiken we het? Antivirusprogramma’s zijn computerprogramma’s die proberen om computervirussen en andere kwaadaardige software te identificeren, tegen te houden en te verwijderen. In dit artikel behandel ik een aantal gratis antivirusprogramma’s waarvan ik vind dat deze prima functioneren.


avast! Free Antivirus 7 (download)

Avast! Free Antivirus is een gratis pakket dat enkel de module tegen virussen en spyware bevat. De software is gratis beschikbaar voor persoonlijk en niet-commercieel gebruik. De installatie van avast! is erg gebruiksvriendelijk en is beschikbaar in 40 verschillende talen. Binnen enkele seconden is de software geïnstalleerd en bent u beschermt tegen het kwaad.

Avast free summary

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Howto set up your own TeamSpeak 3 server on Linux

teamspeak logo

In this (video)-tutorial we install our own TeamSpeak 3 server on a Linux machine. TeamSpeak 3 is a VoIP (Voice over IP) program designed for gamers.


Requirements for this tutorial:

  • A server with a network connection (I’ll use CentOS 6)
  • A client with a network connection (Windows 7 in my case)
  • TeamSpeak client/server software from their website (link)

Open a terminal to your server and download the TeamSpeak 3 server software:

$ wget http://mirror-to-the-current-teamspeak-release.tar.gz

Extract the package by typing:

$ tar xzf teamspeak3-server_linux-amd64-

Get into the new directory by typing:

$ cd teamspeak3-server_linux-amd64-

Start the new TeamSpeak 3 server by running:

$ ./ts3server_minimal_runscript.sh

Your new TeamSpeak server will now start in foreground. Launch your TeamSpeak 3 client, enter the IP-address for your server and hit connect. After connecting you’ll get a massage about administrator privileges that have not yet been claimed. Go back to your terminal and copy the part AFTER “Token=”. Paste this into the “Use Privilege Key” input field.

You should now be administrator of your new TeamSpeak server!

In order to stop the running server, which is in foreground right now, hit CTRL+C. In order to run the server in the background, execute the following:

$ ./ts3server_startscript.sh start

You can now safely close your terminal without shutting the TeamSpeak server down.

Have fun!


Install your own VPN server with OpenVPN on CentOS 5.8

OpenVPN logoIn this (video)-tutorial I’ll show you how to setup your own OpenVPN access server in just a few minutes! OpenVPN is an open source software application that implements VPN techniques for creating secure point-to-point connections.

In order to proceed, you’ll need the following:

  • A basic installation of CentOS 5.8 (32- or 64-bit)
  • A dedicated or virtual machine

After the installation of CentOS, head over to the OpenVPN website at http://www.openvpn.net and go to “VPN Solution”. Now click on “Access Server Software Packages”. Select the appropriate operating system. In my case it’s CentOS. Copy the URL of your OS version and make a choice between 32- or 64-bit. In my case it’s CentOS 5, 64-bit.

Head over to your terminal and execute the following command:

# wget http://swupdate.openvpn.org/as/openvpn-as-1.8.4-CentOS5.x86_64.rpm

The download process will now start. Please be patient until it’s finished. Next, we’ll use rpm to install the software on our machine.

# rpm -i openvpn-as-1.8.4-CentOS5.x86_64.rpm

The installation process will now start. This will take a few seconds. Next, we want to set a password for the default VPN user “openvpn”.

# passwd openvpn

Next, open a browser and go to the URL mentioned after “Admin UI:” just after installing and try to log in with the username and password that you’ve just set.

The next thing you’ll have to do is test it from a remote location. You can use either the OpenVPN Connect or OpenVPN Client software to connect on a windows machine. Both packages can be found here.

Disable Facebook Messenger push notifications on iPhone

Facebook logoDid you receive any annoying Facebook Messenger push notifications on your iPhone lately stating: “Person XYZ is now using facebook messenger”? Well I did, and it’s really annoying.

Here’s a way to disable it.

  1. Open the Facebook app
  2. Press the “≡” button in the upper left corner and scroll all the way down
  3. Select “Account Settings”
  4. Select “Notifications”
  5. Uncheck the following boxes: “Mentions You in a Comment”, “Tags You in a Post”, “Close Friends List Activity”, “Group Posts and Comments”, “Application Requests” and “Gifts”.


Project: Ubuntu 12.04 home server

Ubuntu LogoI’ve recently build my own home server based on Ubuntu Server 12.04. This machine has anything you would expect from a server: performance, reliability and storage.


The hardware:

  • CPU: Intel Core i3-2120
  • Motherboard: Asus P8H61-I
  • Memory: Kingston ValueRAM 8GB DDR3-1333 kit
  • Hard disks: 4x Seagate ST2000DM001 (8TB in total)
  • Case: Factical Design Array R2 mini ITX NAS

Home server hardware

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Installing VMware Zimbra 8 on CentOS 6 (video included)

VMware Zimbra 8 is here! In this tutorial I’ll cover a fresh installation of Zimbra 8 on CentOS 6.3. Zimbra is a groupware email server and web client.


This tutorial requires:

  • CentOS 6.3 (download)
  • Zimbra 8.0 OSE (Red Hat Enterprise Linux 6 edition)
  • A dedicated server or virtual machine
  • Basic Linux knowledge


In my case I will create a virtual machine in VMware Workstation 9. This virtual machine has 2GB of memory and all of my cpu cores available to it.

virtual machine setttings







Start up your machine and hit ‘Install or upgrade an existing system’.

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Video tutorial: Setting up SSH public key authentication in Ubuntu 12.04

I’ve been using Linux for quite some time now but never really understood how public key authentication works. I decided to search the web and try it out on different testing machines. So, if you want to find out how it works as well, here’s how it’s done.







First, you’ll need to log in to your machine, and create a necessary directory, change it’s permissions and go into it.

$ mkdir .ssh/; chmod 700 .ssh/; cd .ssh/

After that, you want to create a file called ‘authorized_keys’. This file contains the public key(s) that are allowed to log-in with your username.

$ touch authorized_keys; chmod 600 authorized_keys

Right now, it should look like this:

$ ls -lh

-rw——- 1 kevin kevin  394 Jun  3 13:00 authorized_keys

It’s time to generate the public/private rsa key pair:

$ ssh-keygen -t rsa

Generating public/private rsa key pair.
Enter file in which to save the key (/home/kevin/.ssh/id_rsa):

Enter passphrase (empty for no passphrase):
Enter same passphrase again:
Your identification has been saved in /home/kevin/.ssh/id_rsa.
Your public key has been saved in /home/kevin/.ssh/id_rsa.pub.

Your .ssh/ directory should look like this right now:

ls -lh

-rw——- 1 kevin kevin 394 Jun 3 13:00 authorized_keys
-rw——- 1 kevin kevin 1.8K Jun 3 14:16 id_rsa
-rw-r–r– 1 kevin kevin 394 Jun 3 14:16 id_rsa.pub

Add the id_rsa.pub key to the authorized_key file

cat id_rsa.pub >> authorized_keys

Next, download the private key (id_rsa) file to your local Windows machine by using WinSCP.

Open PuTTYgen, click ‘load’ and search for the id_rsa file you just downloaded from your Linux machine. Enter your passphrase and hit OK. Now, click ‘Save private key’ and select a good destination to store your private key file.
At last, open PuTTy, enter the IP address or hostname of your Linux machine and go to Connection -> SSH -> Auth.


At the bottom you will find ‘Private key file for authentication:’. Hit browse, and select the key file we just saved with PuTTYgen. Hit open, enter your username, your passphrase and ta-da.








Installation guide: VMware ESXi 5 – Free Hypervisor (720p)

This video tutorial will show you how to install VMware ESXi 5. This fully functional hypervisor lets you virtualize your servers and run your applications in virtual machines in a matter of minutes.