Apostolos Fotakelis

Apostolos Fotakelis is a computer security engineer and a Microsoft Certified Trainer. He has a bachelor’s in mathematics.

Articles by Apostolos Fotakelis
10 Free Security Tools for Home Use
Here are 10 free tools you can use to increase the level of security on your home PCs.
Setting Up Meaningful Text Messages
Configure your security software’s text messages so that they make troubleshooting easier.
Microsoft Security Essentials: Legal, Free, and Centrally Deployable Antivirus
Small businesses can use Microsoft Security Essentials on up to 10 PCs for free. In this article, learn how to install this free antivirus solution without leaving your desk.
Use Group Policy to Deploy Commonly Used IE Plug-Ins
Using Group Policy Objects (GPOs), you can deploy Flash Player, Shockwave Player, and the Java Runtime Environment (JRE) to computers in your organization.
Registry Tweak Restores Connection to a Remote Windows 2008 Server
Without warning, a systems administrator's connection to a remote Windows Server 2008 machine stopped working. Here's how he found and fixed the problem.
Redirect More Folders 1
Active Directory's (AD's) Group Policy Objects (GPOs) offer folder redirection, but you can redirect only four special user folders. Although you can't use GPOs to move more folders, you can redirect them by tweaking the registry.
Use Netsh to Reset the Windows Socket Layer
Suddenly and for no apparent reason, the 32-bit programs on a reader's Windows Vista machine couldn't connect to the Internet or network, while the 64-bit programs worked fine. Using the ISO OSI model and Netsh, he tracked down and fixed the problem.
Use Dcomcnfg.exe to Stop DCOM 10000 and 10005 Errors
Here's where to find and how to use this helpful utility.
Use Windows Vista's CD-ROM to Repair Earlier Windows OSs
If you need to repair a Windows 2003, Windows XP, or Windows 2000 installation that exists on a SATA disk, you can use Windows Vista's installation CD-ROM.
A Sysadmin’s DNS Best Practices 1
Systems administrator Apostolos Fotakelis shares nine tried-and-true tips for running a secure DNS environment.
Open a Command Prompt Window While Installing Windows
You might think that performing such tasks as checking available disk space or searching for a file while Windows is installing is impossible, but that's not the case.
Use ADSI Edit to Associate File Extensions 2
Sometimes applications that you deploy with the Group Policy Software Installation feature don't register their file extensions, so the auto-install doesn't work. Here's an easy way to fix the problem.
Mount and Dismount VHD Images on Command
If you're running Microsoft Virtual Server 2005 R2 with SP1, you can use a command-line utility named VHD Mount to mount a .vhd file so that you can see its contents.
Use Netsh to Easily Change IP Addresses 1
If your users have to change IP addresses often, you can create a batch file that contains just three Netsh commands. After you put that batch file on users' desktops, they can change their IP address with a simple double-click.
Time-Saving Tips for Typing URLs in IE
Internet Explorer (IE) has provided URL shortcuts in the past. Microsoft continues that tradition in IE 7.0 with a new URL feature that can simplify your browsing experience.
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