Keep Your Firewall On To Protect Your PC

Microsoft windows XP has its own built in Firewall that helps to protect the
system from hackers,viruses and many other threats like that .It should be
always on because it also keep an eye on critical security updates that are
necessary for windows are antivirus.To turn it on in go to control panel and
then select security center,click on Firewall option and turn it to on.It will also inform you that your antivirus is up to date are  not.