Microsoft has bundled their basic Firewall application with the Windows Operating System (OS) since Windows XP SP 3. The firewall is used to provide consistent protection against Internet intrusion and attacks on computers and will block connection attempts that have previously been associated with malicious behavior. Error 0x8000ffff can be generated when the Microsoft Firewall …
MBR – Master Boot Record – or simply Boot Record is the sector located at the beginning of your hard drive. This sector contains crucial information about your hard drive partitions and logical file system. The boot record also stores the first bits of software that the system executes once the BIOS hands control of …
A protocol is a collection of specifications or rules for data packets that enable information to be sent over the network. Network protocols are designed for network communication. In order to understand the different protocols available and their efficiencies, lets first look at the Open Systems Interconnection (OSI) reference model. This is the standard model …
Ntoskrnl.exe (Windows boot up kernel) is a vital component utilized in the boot process for NT based Microsoft operating systems. It is also responsible for a host of system services such as process and memory management, security management, object management, hardware virtualization and so on. It holds several sub systems: Cache Manager, I/O Manager, Configuration …
Unprotecting an Excel sheet is surprisingly easy. If your Excel sheet is password protected and you do not know the password, there is no way that you can unprotect the sheet in that particular workbook – but you can create a new workbook which will contain exactly the same formulas, formatting and values that will …
Even though it might be alarming to see “0x800a0007 Windows Update Error” on one’s computer, it is quite easy to repair. Computer users receive this error message for various reasons, especially when trying to update software. Some common reasons for receiving the 0x800a0007 Windows Update Error are incorrect settings in Secure Socket Layers (SSL), incorrect …
What is a Screensaver? A screensaver is an animated image that is displayed on a PC screen when inactive – once the user’s inactivity has been detected for a certain period of time. Screensavers were originally created to prevent burn-in (i.e. the burning of an image into the phosphor inside the cathode ray tube after hours of …
User accounts allow Microsoft Windows to differentiate between computer users in order to determine the rights they should have. Each user account is assigned its own location on the hard disk for file storage. There is a collection of settings pertaining to each account that is stored in the computer’s Registry. Methods for Limiting a …
Designing a Proxy Server Implementation Before you can design a Proxy Server implementation and install Proxy Server, you need to be knowledgeable on a number of concepts: IP routing concepts Firewalls concepts Packet filtering concepts Files and protocols utilized in Web applications To design a Proxy Server implementation, there are a number of factors that …
Hackintosh is a hacked PC that runs on MAC OS X OS (“Lion”, “Snow Leopard” , “Leopard”). At first, a lot of people thought that this was impossible to run MAC OS on a non-MAC hardware because of the different software, drivers, and utilities being used between the two. It all started when Apple decided …