Windows XP Firewall

Windows XP Firewall provides protection against internet attackers by blocking malicious software (malware) from being loaded on your PC. Firewalls can be configured to block certain websites while allowing harmless websites and transmissions to come through. They are of particular importance for users who have "always on" connections such as cable or DSL modems.

Firewalls come in two flavors: hardware (external) and software (internal). Both have their advantages and disadvantages.

• Hardware - These external firewall devices are placed between your PC and your cable or DSL modem. Some Internet Service Providers (ISPs) offer "routers" that include firewall features. Hardware-based firewalls can protect multiple computers or only one computer. The biggest negative for hardware-based firewalls is cost, even though there are products available for less than $100.
• Software - Some operating systems, such as Windows XP and Vista, include a built-in firewall. If you have an "always on" internet connection you should enable your built-in firewall as another layer of protection. If you don't have the built-in variety you can purchase or download a software firewall product for little or no cost.

Although relying on a firewall alone does provide some protection, it is not recommended. A firewall should be a part of an overall security strategy that includes anti-virus software, anti-spyware, and a backup plan.

HOW TO TURN ON THE BUILT-IN WINDOWS XP FIREWALL

From your desktop, click on the START button, then CONTROL PANEL, then SECURITY CENTER if you are using the category view, and then Windows Firewall. If you are using the classic view then after clicking on CONTROL PANEL, locate Windows Firewall and click on it.

• At the General tab of the Windows XP Firewall window you'll see that it is basically ON or OFF. The "Don't allow exceptions" checkbox is more for laptop users who may be using a wireless internet connection.

• The Exceptions tab is where you can allow transmission through the firewall for certain applications. For example, you may want to download an update over the internet for one of your programs which may be blocked by the firewall. You would click on the "Add Program.." button and browse to the program that you want to update.

The Exceptions Tab

On the Exceptions tab, shown below, you can view all of the programs that Windows has on its default block list. If you would like to unblock something on the default list, just click the checkbox next to the program name.

You can also add or delete programs from the block list from this tab.

Advanced Tab

On the Advanced tab, shown below, you will see all of the network connections on your system that can be secured by the Firewall. A checkmark next to the network connection means that it is being protected.

Also under the Advanced tab is the "Default Settings" option. If you get confused about your settings, Click the "Restore Defaults" button and you will remove any previous settings changes that have been made and return the Windows Firewall back to the Default configuration.

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