A firewall program is an application that limits the types of
connections that the rest of the world can make to your machine.
While this can be very helpful in keeping your machine safe, buying
and setting up advanced firewall programs can make using your machine
difficult, as they require more computer savvy than automatic updates
and Anti-virus applications. However, newer operating systems, and
most notably Windows XP and Macintosh OS X, have a built-in firewall
that is very easy to use and should not interfere with your normal
Windows XP Service Pack 2 includes several new features and
upgrades, many of which are dedicated to keeping your machine secure.
The firewall becomes much more effective after the installation of the
service pack. If you have Service Pack 2 installed, then your firewall
should be turned on already. You can confirm this by going to the
Security Center, located on the Control Panel.
If you have a version of Windows XP without Service Pack 2, you
should run Windows Update right away to ensure that everything on your
system is up to date. But before you do, make sure that the firewall
is turned on. Click
here for instructions on setting up the Windows XP firewall on
Although most firewalls give users the ability to allow certain
types of network traffic that would otherwise be blocked, we strongly
recommend not doing so unless you are aware of the risks presented.
Configuring Windows XP Service Pack 1 Firewall
Configuring OS X Firewall
Program Access with Windows XP Service Pack 2 Firewall
Learn about upgrading to Windows XP Service Pack 2
To reach this page quickly in the future, use the keyword firewall.
Send reports of security incidents, attacks, or questions to firstname.lastname@example.org