Wired to the World: Firewalls

Abstract

An antivirus program continuously monitors your computer to detect a virus, which is automatically deleted and/or quarantined. Firewall programs, on the other hand, block access to your computer from the Internet and prevent hackers from planting a worm or other type of malicious software in your computer. Firewalls protect your data, your computer, and your name from corruption. Stories are legion about the Internet being used to seize control of a computer identity to do things such as send out fake e-mails in your name canceling final exams, insulting your boss, and ordering merchandise such as ten pizzas to be delivered to your office. A good firewall will prevent such aremote seizure of your computer.